WORKSHOP APALACHICOLA CITY COMMISSION TUESDAY, APRIL 8, 2025 = 5:00PM FORMER APALACHICOLA MUNICIPAL LIBRARY 74 6TH STREET, APALACHICOLA, FLORIDA 32320 AGENDA You are welcome to comment on any matter under consideration by the Apalachicola City Commission when recognized to do SO by the Mayor. Once recognized please rise to the podium, state your name for the record and adhere to the five-minute time limit for public comment. Comments may also be sent by email to the City Manager or to Commissioners. I.Call to Order Invocation Pledge of Allegiance II.Agenda Adoption III.Public Comment IV.Presentation of Draft Vulnerability Assessment & Resiliency Analysis by Bay Media Services, LLC V. Mayor, Commissioner, and Staff Comments Adjournment Any person who desires to appeal any decision at this meeting will need a record oft the proceeding and for this purpose, may need to ensure that a verbatim record of the proceeding is made which includes testimony and evidence upon which the appeal is based. Persons with disabilities needing assistance to participate in any ofthese proceedings should contact the City Clerk's Office 48 hours in advance oft the meeting. City of TER CARIE Apalachicola Vulnerability Assessment and Resiliency Analysis Prepared for: Prepared by: City of Apalachicola Bay Media Services, LLC High Tide Intelligence Funded by: Florida Department of Environmental Protection (FDEP) Grant #22PLN10 o 2 City of Apalachicola 2024 Vulnerability Assessment Table of Contents Background 3 Data Acquisition 4 Exposure Analysis 5 Methodology - Critical Asset Identification 12 Sensitivity Analysis 17 Risk Assessment 19 Impacts to Assets 25 Prioritized Assets 49 Zoning Parcel Impacts 52 Economic Impacts 60 Focus Area Analysis 66 Adaptation Planning 88 APPENDICES Appendix 1 Technical Report Appendix 2 Tables Appendix 3 Maps Assessment Disclaimer The City of Apalachicola Vulnerability Analysis data and maps are for planning, education and awareness purposes only. The information contained herein should not be used for site-specific analysis, navigation and flood rates or permitting. The City of Apalachicola makes no warranty explicit or implied, regarding the accuracy or use of this information. The data and maps in this report illustrate the scale of potential flooding, not the exact location. The inundation areas depicted in the SLR analysis are not as precise as they may appear. The data, maps and information provided should be used only as a screening-level tool for management decisions. Maps generated from these models provide the basis for applying the sea level rise and projected storm scenarios to assess potential extent and severity of flooding. While they have many limitations and should not be used for site-specific analysis, bathtub models are useful for visualizing potential extents of future high water levels for initial consideration of vulnerabilities. These data illustrate the scale of potential flooding, not the exact location, and do not account for erosion, subsidence, or future construction. These data should be used strictly as a planning reference and not for navigation, permitting, or other legal purposes. : - .o e o 2024 Vulnerability Assessment City of Apalachicola 3 Background The City of Apalachicola is located in Northwest Florida, west of the junction of the Apalachicola River and Apala- chicola Bay. The influx of freshwater from the Apalachicola River forms the. Apalachicola National Estuary and is con- sidered to be one of the most resource rich ecological sys- tems in the United States. The Apalachicola Bay estuarine system constitutes the most environmentally sensitive area within Franklin County. Apalachicola is located approxi- mately 60 miles east of Panama City and approximately 80 miles southwest of Tallahassee. Access to Apalachicola can only be achieved via State Highway 98 which runs east to west through the City. State Highway 98 is the only means of evacuation from the City. The City covers approximately 2.0 square miles, approxi- mately 1,050 acres. It is bound on the east by the Apala- chicola River, on the south by Apalachicola Bay, on the north by Scipio Creek, and the west by rural development and undeveloped forest land. Elevations within the City generally range between 0 and 16 feet. The City is generally low relief in terms of eleva- tion. Some areas are located in lower elevations close to sea level and some areas are on broad, low hills. The higher elevations coincide with sandy, well drained hills. The lower elevations are generally poorly drained. The lower elevations are also more prone to flooding. The lower elevations are along the shoreline and inland for two blocks, generally. The City has approximately 20,000 linear feet of shoreline. - :. .. 00. 4 City of Apalachicola 2024 Vulnerability Assessment Data Acquisition Task 2: Acquire Background Data. Description: The Grantee will research and compile the data needed to perform the VA, based on the Requirements as defined in Section 380.093, F.S. Three main categories of data are required to perform a VA: 1) critical and regionally significant asset inventory, 2) topographic data, and 3) flood scenario-related data. GIS metadata should incorporate a layer for each of the four asset types as defined in paragraphs 380.093(2)(a) 1-4, F.S. GIS files and associated metadata must adhere to the Resilient Florida Program's GIS Data Standards (Exhibit I), and raw data sources shall be defined within the associated metadata. Sea level rise projection data shall include the 2017 National Oceanic and Atmospheric Administration (NOAA) intermediate-high and intermediate-low projections for 2040 and 2070, at a minimum. Other projections can be used at the Grantees discretion. Storm surge data used must be equal to or exceed the 100-year return period (1% annual chance) flood event. In the process of researching background data, the Grantee shall identify data gaps, where missing data or low-quality information may limit the VA's extent or reduce the accuracy of the results. The Grantee shall rectify any gaps of necessary data. Eligible activities for this task may include critical asset inventory and identification of data gaps, GIS files and metadata of asset types, sea level rise and storm surge and wave projection data, and digital elevation surveying of elevation of assets. Asset datasets that have been already submitted to the Department need not to be resubmitted; only new or updated assets shall be submitted. Deliverables: The Grantee will provide the following: 2.1: Ai technical report to outline the data compiled and findings of the gap analysis; (Appendix 1) 2.2: A summary report to include recommendations to address the identified data gaps and actions taken to rectify them, if applicable; 2.3: GIS files with appropriate metadata of the data compiled, to include locations of critical assets owned or maintained by the Grantee as well as regionally significant assets that are classified and as defined in paragraphs 380.093(2)(a) 1-4, F.S. 2.4: Ai final technical report identifying which data gaps were rectified and the actions taken to address them; and 2.5: The GIS files generated to rectify identified data gaps with appropriate metadata of the data compiled, to include locations of critical assets owned or maintained by the Grantee as well as regionally significant assets that are classified and as defined in paragraphs 380.093(2)(a) 1-4, F.S. Status: Task 2 DEP-approved. - : SooA 2024 Vulnerability Assessment City of Apalachicola ) Exposure Analysis Task 3 - Exposure Analysis Description: The Grantee will perform an exposure analysis to identify the depth of water caused by each sea level rise, storm surge, andlor flood scenario. The water surface depths (i.e. flood scenarios) used to evaluate assets shall include the following data: tidal flooding, current and future storm surge flooding, rainfall-induced flooding, and compound flooding, all as applicable, as well as the scenarios and standards used for the exposure analysis shall be pursuant to S. 380.093, F.S. GIS files and associated metadata must adhere to the Resilient Florida Program's GIS Data Standards (Exhibit I), and raw data sources shall be defined within the associated metadata. Included in this exposure analysis are requirements outlined in agreement 22PLN10 Task 3. Deliverables: The Grantee will provide the following: 3.1:A A draft VA report that provides details on the modeling process, type of models utilized, and resulting tables and maps illustrating flood depths for each flood scenario; and 3.2: GIS files with results of the exposure analysis for each flood scenario as well as the appropriate metadata that identifies the methods used to create the flood layers. Status: Task 3 deliverables included in Appendix 2 (Tables) and Table 3 (Maps), GIS files on file with DEP. Status: Task 3 DEP approved. C 0 SooA 6 City of Apalachicola 2024 Vulnerability Assessment Methodology The 2024 vulnerability assessment update The NOAA sea level rise and storm surge models were uses hazard-specific data and risk modeling overlaid with the City GIS data to produce the following to determine the short and long-term vulnera- analysis: bilities resulting from combined sea level rise Citywide Anticipated Impact. This series of GIS-based and storm surge to Apalachicola's critical maps show the anticipated impacts of SLR and Surge on assets. the City as evidenced by the 2023 No SLR (present day) intermediate Low and Intermediate High. The exposure and sensitivity analysis was prepared using Geographic Information System (GIS) data provided by the Critical Asset Exposure. This analysis details the critical City of Apalachicola Planning Department and the Frank- facilities within the City that will be impacted. A review of lin County Property Appraiser's Office. Sea level rise and the 2022 Apalachee Regional Planning Council report storm surge model data were sourced from the National on the nine county Vulnerability Analysis also identifies Oceanic and Atmospheric Administration (NOAA), along regional assets. with Digital Elevation Model (DEM) data from the United States Geological Survey (USGS). Property Exposure. This map and data details City-owned and publicly-owned properties that will be impacted by No Flood hazard model runs were initialized to represent the SLR Intermediate Low and Intermediate High inundation 2023, 2040, 2070 and 2100 sea level projections with levels. 10-, 50-, 100-, and 500-year storm surges. For the pur- poses of this report, the 2023, No Sea Level Rise (SLR); Historic Resource Exposure. This analysis identifies 2040, Intermediate-Low; 2040, Intermediate-High; 2070, the impact to the City's historic resources as identified Intermediate-Low; 2070, Intermediate-High; 2100, Inter- on the Florida State Master Site File within the No-SLR mediate-LoW; and 2100, Intermediate-High storm intensity Intermediate Low and Intermediate High inundation areas. models (NOAA, 2017) are illustrated. After consultation with representatives at NOAA, these models were deemed Additional data analysis for regional assets and as representative of likely impacts. precipitation model projections reference the 2022 Apalachee Regional Vulnerability Assessment for the nine The economic impact of flood damage to buildings, in dol- county region. lars, and the number of households at risk displacement due to flood damage were quantified using the Stanford Urban Risk Framework. A separate discussion of that methodology follows. The updated assessment differs from the 2017 study in that it includes storm surge data, includes all required storm scenarios and includes innovative flood risk data modeling efforts by HighTide Intelligence that provide building-level economic impact results that will help the City and residents identify potential risks and plan for appropriate risk management. - - : / :. SooA 2024 Vulnerability Assessment City of Apalachicola 7 Overview The National Oceanic and Atmospheric Administration All scenarios have model representations of 10-year (10% (NOAA) created predictive models that are used to esti- chance), 50-year (2% chance), 100-year (1% chance), and mate impacts to coastal communities based on various 500 year (0.2% chance) storms. Representation of Tidal scenarios of impact. The models are characterized as flooding for all scenarios and storm types are represented, follows based on three classifications. as well. The Intermediate-Low, and Intermediate-High mod- els show flooding scenarios for present day (2023), 2040, 1. Severity of the Storm Model. NOAA has organized the 2070, and 2100 for all storm types. storms into classifications of severity models. The classifi- cation system continues to evolve, but basically is sce- Generally, the models show an increasing severity of narios of Low, Intermediate-Low, Intermediate-High, and flooding based on NOAA's modeling. That is, the Interme- Extreme. At the direction of NOAA, the "outlier" models of diate-Low model is more severe than the 2023 present day Low and Extreme were not considered, instead relying on model and the Intermediate-High model is more severe the Intermediate-Low. and Intermediate-High for reason- than the Intermediate-Low, model. In addition, as expect- able interpretation of data. In this way reasonable pre- ed storm types increase with severity based on the lower paredness can be achieved by the community by relying probability of occurrence. on what NOAA considers reasonable. NOAA's probability-based terminology offers an alternative 2. Annual Exceedance Probability. The probability of a to the traditional hurricane category classification system, storm occurring is classified into 10-year, 50-year, 100- though the two can be loosely correlated. For example, year, and 500-year storms. Said another way, these are a tropical storms and Category 1 hurricanes are generally 10%, 2%, 1%, and 0.2% annual exceedance probability associated with higher-probability events, while Catego- scenarios, i.e. the 10- year, 50- year, 100- year, and 500- ry 5 hurricanes represent lower-probability, occurrences. year floodplains. It is worth noting that the 100-year flood However, precise correlations between these systems can is defined as the flood that has a 1% probability of occur- only be established after a storm, once its impacts are ring or being exceeded any given year, and not a flood that analyzed. This report does not attempt to correlate the two only occurs once every 100 years. systems in detail. Additionally, factors such as the distance from the storm's center at landfall and the storm's landfall 3. Initial (present day) and Future Predictions. The direction relative to the city introduce further complexity, models are characterized using environmental data for the which is also beyond the scope of this report. present-day (2023), 2040, 2070, and 2100. The above criteria are used to create flood scenarios in which depths and extents of flooding are characterized. Examples of scenarios include the 2040, Intermedi- ate-High, 100-year event and the 2100, Intermediate-Low, 50-year event. The scenarios for present day events are typically characterized as 2023, No-Sea Level Rise (SLR), 10-year event. Stated differently, NOAA's classification can be broadly categorized as 2023, No Sea Level Rise, which represents the scenario for present day conditions, impacts using the NOAA model for an Intermediate-Low scenario, and impacts using the NOAA model for an Intermediate-High scenario. - : : GooA 8 City of Apalachicola 2024 Vulnerability Assessment The above criteria were used to produce the 35 storm scenarios that are used in this report. Below is a discussion of the methodology and specific data These 35 scenarios are listed below and are re- sources used to develop the geospatial data and metadata flected in the Figures Appendix 3. files. Datasets used in the assessment were obtained from a variety of State, Federal and locally-created sources. 2023_No Sea Level Rise_10-year Many of the data sources were merged to incorporate lo- cally-sourced point data not represented in other datasets. 2023_ No Sea Level Rise 50-year A spreadsheet of Critical Assets is included in the table 2023_ No Sea Level Rise 100-year appendix as a separate file which includes metadata link 2023_ No Sea Level Rise 500-year data for each dataset. 2023 No Sea Level Rise Tidal 2040_ mtemedlatelow.10year Combined, these data sources enabled the project team 2040 I Intermediate-Low 50-year to evaluate the spatial extent of storm surge, tidal flooding, 2040_ Intermediate-Low, 100-year and sea level rise on critical assets within the City. 2040_ Intermediate-Low 500-year 2040_ Intermediate-Low Tidal Flood Scenario Data The flood hazard models were developed using data from 2070_ Intermediate-Low 10-year Federal agencies, including the National Oceanic and 2070_ Intermediate-Low, 50-year Atmospheric Administration (NOAA), Federal Emergency 2070_ Intermediate-Low 100-year Management Agency (FEMA), and the United States Geo- 2070_ Intermediate-Low, 500-year logical Survey (USGS). 2070_ Intermediate-Low, Tidal 2100.mtermedlate-Low 10-year Digital Elevation Model 2100_ Intermediate-Low, 50-year This assessment used a digital elevation model USGS 2100_ Intermediate-Low, 100-year Lidar: Florida Panhandle DEM from NOAA's National Cen- 2100_I Intermediate-Low, 500-year ters for Environmental Information") as it offers a 1 meter 2100_ Intermediate-Low, Tidal horizontal resolution, exceeding FDEP's requirement. The elevation of the DEM is relative to the North American 2040_I nemmedate-ngn.1Oyear Vertical Datum of 1988 (NAVD88). (DEM) Given that the 2040_ Intermediate-High _50-year flood modeling in this vulnerability assessment is based 2040_ Intermediate-High 100-year on elevation and hydraulic connectivity, an accurate and 2040 Intermediate-High 500-year high-resolution Digital Elevation Model (DEM) is essential. 2040_ Intermediate-High Tidal The DEM's Non-vegetated Vertical Accuracy is 0.132 2070_ Intermediate-High - 10-year meters at a 95% confidence level, which is satisfactory for 2070_ Intermediate-High 50-year this application. 2070_ Intermediate-High 100-year 2070_ Intermediate-High 500-year 1. OCM Partners, 2023: 2018 USGS Lidar: Florida Pan- 2070.ntermedate-High Tidal handle from 2010-06-15 to 2010-08-15. NOAA National Centers for Environmenta Information, htps/www.fisher 2100.mtermedlate-Hgn 10-year asnouagumportitmasas 2100.Intermedate-High 50-year 2100_ Intermediate-High 100-year 2100_ Intermediate-High 500-year 2100_ Intermediate-High Tidal - - ) :o .0.0 o oo 2024 Vulnerability Assessment City of Apalachicola Tidal Datums This assessment used a NOAA active tidal station; Apala- return periods (10-year, 50-year, 100-year), as provided chicola (Station D:8728690), with daily measurements by the gridded extreme water level probability data pro- within the Project site. Large scale hydrodynamics, vided by NOAA's 2022 technical report[41, which were influenced by astronomical tides, cause sea levels to vary interpolated. While the 500-year return period is optional, from location to location. Tide gauges provide measure- the Apalachicola assessment included it using results ments over time of sea levels at specific locations. In many from a Bayesian Hierarchical Model (BHM) developed by studies like this, the area of interest is between two tide researchers from Princeton and the University of Central gauges that are far apart, and it is common practice to Florida, who implemented the methodology published by interpolate Mean Sea Level (MSL) and other tidal informa- Calafat and Marcos, 2020[5]. While the BHM is complex, tion, such as the Mean Higher High Water (MHHW). The it can be described at a high-level as a method to help NOAA tide gauge (Station ID: 8728690)t2), established in overcome short tide gauge records, which are generally 1967, is located less than a mile from the city center. The insufficient to predict a 100-year flood, let alone a 500-year other nearest tide gauge is in Panama City, approximately flood, by sharing information between nearby tide gaug- 50 miles away. We verified that the mean sea level at the es and applying extreme value theory. Finally, to account Apalachicola tide gauge was higher than that of the Pana- for some of the nonlinearity that is missed by the eleva- ma City tide gauge, per FDEP's guidelines, and proceeded tion-based bathtub model, specifically waves, we leverage to use the Apalachicola tide gauge exclusively, as it did not floodplain management practices fori incorporating waves appear beneficial to interpolate with the Panama City tide by adding 2 feet and 4 feet of flood depth, or freeboard", gauge. At the Apalachicola tide gauge, relative to NAVD88, in FEMA's AE and VE flood zones(6], respectively. Overall, MSL is 0.15 feet and MHHW is 0.85 feet. the project team generated 28 flood depth raster files and 2. CO-OPS, 2023: Apalachicola, FL - Station ID: 8728690. 28 accompanying flood extent vector files. NOAA Tides and Currents, tpsAoesandaurensnoat govstationhome.ntml2d-8728690. 4. Sweet et al., 2022, Global and Regional Sea Level Rise Scenarios for the United States: Updated Mean Projec- Sea Level Rise and Tidal Flooding tions and Extreme Water Level Probabilities Along U.S. 380.093, F.S. requires the use of the 2017 NOAA Interme- Coastlines., NOAA Technical Report NOS 01, NOAA NOS, diate-High and Intermediate-Low sea level rise projection ntps/loceansenuca.naris/sealeveliselsea: curves/3] for the 2040 and 2070 planning horizons. This evenselech-repor.nm. assessment also includes sea level rise projection curves 5. Calafat and Marcos, 2020, Probabilistic reanalysis for the 2100 planning horizon. Sea level rise projections of storm surge extremes in Europe., PNAS, https:lldoi. were adopted from the NOAA Technical Report NOS CO- p/d102apmas1pi20.lT2 Ops 083 Global and Regional Sea Level Rise Scenarios 6. FEMA, 2014, National Flood Hazard Layer, FIRMS for the U.S. 12037C0526F and 12037C05285 Effective February 5, 2014, tps.msc.lemagoponalsearhAddiessdue To model sea level rise and tidal flooding, a bathtub model ry-apalachicola in which the boundary condition is simulated for all combi- nations of years (2023/present day, 2040, 2070, 2100) and FEMA Special Flood Hazard Areas sea level rise projections (NOAA 2017 Intermediate-Low, Regulatory floodplain data provided by FEMA was used to and Intermediate-High), generating 7 flood depth raster conduct a regulatory floodplain analysis of critical assets. files and 7 accompanying flood extent vector files. Critical assets were analyzed to determine their proximities 3. Sweet et al., 2017, Global and Regional Sea Level to FEMA flood hazard layers. Assets were initially selected Rise Scenarios for the US., NOAA Technical Report NOS for further review if any of their parcels intersected with the CO-OPS 083, NOAA CO-OPS, tps/olog/07289NS 100 year or 500 FEMA flood zones. tr-nos-coops-083. Future Precipitation Storm Surge and Waves This assessment incorporates by reference model data To model storm surge combined with sea level rise, the prepared as part of the Franklin County Vulnerability assessment utilized the elevation-based bathtub mod- Assessment prepared in 2022 by the Apalachee Region- el approach again, but this time the boundary condition al Planning Council for the nine-county North Florida was modified for all combinations of years (2023/present, region as it encompasses the Apalachicola area. In the 2040, 2070, 2100), sea level rise projections (NOAA 2017 "Apalachee Regional Vulnerability Assessment", pre- Intermediate-Low, and Intermediate-High. and storm surge 00. 10 City of Apalachicola 2024 Vulnerability Assessment at each NOAA station. All appropriate datasets from the pared by Halff Associates and Cummins Cederberg for the ARPC report are included in the ARPC report. Apalachee Regional Planning Council and approved by 8. 2022. Apalachee Regional Vulnerability. Assessment - An FDEP in 2022. Halff Associates conducted a comprehen- evaluation of Current and Future Flood Risks across the sive analysis of future precipitation and compound flooding nine county region using spatiotemporal analysis and hydrologic and hydrau- lic modeling. An Overview of HighTide's Methodology That ARPC project team utilized the NEX-GDDP-CMIP6 for determining economic impact of flood dataset (Thrasher et al.,, 2021; Thrasher et al., 2022), damage to buildings, property values and a statistically downscaled dataset of the General Circu- households at risk. lation Model (GCM) runs conducted under Phase 6 of Economic Impact of Flood Damage to Buildings, the Coupled Model Intercomparison Project (CMIP6). Property Values and Households at Risk As referenced in the ARPC model run for Franklin Coun- The traditional risk framework used to quantify the ty the downscaled dataset is produced by the National economic impact of flood damage to buildings has long Aeronautics and Space Agency (NASA) across four "Tier been used by engineers and the insurance industry. Take 1" greenhouse gas emission scenarios known as Shared Hazus from the US Army Corps of Engineers (USACE), for SocoeconomcPatiways (SSPs). The NEX-GDDP-CMIP6 example. Though Hazus has evolved since its release in dataset provides daily precipitation data for the historical 1997, it does not incorporate any of the numerous state- (1950 to 2014) and SSP forecast (2015-2100) periods for of-the-art uncertainty quantification methods developed 35 CMIP6 GCMs. The downscaling and bias-correction in recent years to rigorously understand complex and methods used to produce this dataset follow the procedure uncertain geospatial problems. Furthermore, the majority of Thrasher et al. (2012). All appropriate datasets from the of existing socioeconomic impact models are based on ARPC report are incuded. arbitrary indices, and do not quantify risk to households 7. 2022 Apalachee Regional Vulnerability. Assessment An with real-world metrics. evaluation of Current and Future Flood Risks across the nine county region This means that existing technologies are unable to directly use modeled economic impacts to quantify the Compound Flooding vulnerability of households to financial shocks caused by This assessment incorporates by reference model data flooding or other disasters. While sophisticated models prepared as part of the Franklin County Vulnerability exist, they are generally inaccessible to traditional Assessment prepared in 2022 by the Apalachee Regional engineering firms, consultants, and the communities they Planning Council for the nine-county North Florida regione) are contracted by. The Stanford Urban Risk Framework as it encompasses the Apalachicola area. (SURF), which High Tide Intelligence developed and published while conducting research at Stanford As referenced in the 2022 ARPC report, there are a University, was designed to resolve this issue. general lack of hydrology and hyudraulic models available for the region. The 2022 ARPC Vulnerability Assessment By quantifying both the economic impact of flood damage used measured streamflow and storm surge based on the to buildings, in dollars, and the number of households approach of Couasnon et al. (2020). The regional report at risk of displacement due to flood damage in a used US Geological Survey (USGS) streamflow monitor- given Census blockgroup, SURF provides actionable ing station as the source of streamflow data while water intelligence in a common language for stakeholders to levels reported at NOAA tides and stations were used interpret risk. SURF first combines models for hazard, to generate storm surge. Discharge data were acuired exposure, and vulnerability to quantify the economic for the USGS sites and maximum discharge timeseries impact of flood damage to buildings. The hazard model were generated from the data. Period of discharge data is a set of elevation-based flood maps created using availability is variable across the USGS stations. Non-tidal combinations of sea level rise and storm surge residuals were calculated as the diffeence between actual scenarios. This analysis considered years 2023, and predicted water levels at the NOAA tides and currents 2040, 2070, 2100 and storm surge return periods stations. Storm surge was determined as the maximum daily non-tidal residual from the hourly timeseries datasets (10-, 50-, 100-, 500-) storms. o o C 00 2024 Vulnerability Assessment City of Apalachicola 11 The results shown correspond to the Intermediate-Low and Intermediate-High scenario from NOAA's 2017 Sea Level Rise Technical Report. The exposure model uses proprietary data pipelines to assign a first floor elevation and construction replacement cost to each building. The vulnerability model overlays the hazard and exposure model to determine depths of flooding at each building and quantify the damage in dollars with USACE depth- damage curves. The results derived from these layers were then used to calculate property tax impacts using local tax millages. The procedure described thus fari is then repeated thousands of times in a Monte Carlo simulation, where all the variables are sampled randomly from different distributions based on the uncertainty of each variable. The result of this, if sufficient simulations are run, is a comprehensive understanding of how the uncertainty present on each input variable impacts the model outputs. This then allows for a more comprehensive understanding of the economic flood risk facing each property as well as the certainty associated with that risk estimate. The socioeconomic impact model then estimates household discretionary income with data from the United States Bureau of Labor Statistics and the United States Census Bureau. The building-level economic impacts, the uncertainty estimated using the Monte Carlo method, and the Census blockgroup-level household discretionary income model are then used to quantify the number of households at risk of displacement in another Monte Carlo simulation that is fully described in the methodology section of the published research. High Tide Intelligence Modeling results created the following analysis: Building level economic impact results, including first floor height. The exposure model uses proprietary data pipelines to assign a first floor elevation and construction replacement cost to each building. Households at Risk for Displacement. The building-level economic impacts and the Census blockgroup-level household discretionary income model were used to quantify the number of households at risk of displacement. < .. SooA 12 City of Apalachicola 2024 Vulnerability Assessment Critical Asset dentification Critical Assets analysis purposes. That data gap has been resolved and The City collected data for the four required types of Criti- the appropriate data collected and analyzed. cal Assets: Transportation; Infrastructure, Natural, Cultural and Historic; and Community and Emergency Facilities. The following assets were identified as data gaps and Much of the data was collected from the FGDL inventory resolved through data collection and analysis. as well as other sources including the FDOT, FWC, FWRI, FDEM, FDEP, and Geoplan. A significant number of point Critical Infrastructure data was muncipal- sourced when appropriate data was Stormwater Treatment Conveyances and Facilities not available from other sources. In some instances, the Water Utility Conveyance System data files were merged to create a more complete data file. Waste Water Conveyance System and Lift Stations Raw data collected was processed in accordance with Regional Assets DEP's Geographic Information System (GIS) infrastructure The City of Apalachicola is a municipality within Franklin and tools and mapping coordinate reference systems. County. It is bordered by the County and does not share The files, along with all associated metadata and attribute any other boundaries with any other geopolitical unit. For requirements were submitted in the required GIS digital those assets required by statute that do not exist within the file format. Critical Asset files were submitted to DEP, city boundaries, this report references the 2022. Apalachee reviewed and approved as part of the required technical Regional Planning Council's Vulnerability Analysis that report portion of the project. A link to the raw data used for includes Franklin County and surrounding counties. Those the asset inventory is located in the attached table appen- regional assets have been inventoried and the vulnerabili- dix. ties analyzed by the Apalachee Regional Planning Council (ARPC) as part of its 2022 "Apalachee Regional Vulner- Assets that were inventoried using statewide data were ability Assessment- An Evaluation of Current and Future processed and clipped to the City boundaries or were Flood Risks Across the Nine-County Region. J merged with locally-sourced data obtained through local source maps that were then groundtruthed. The following is a count of each critical asset not found within the City but which was identified in the ARPC Table 69 Appendix 3, Tables) represents a list of all Regional Vulnerability Analysis. required assets and identifies those assets that are either missing through data gaps or have been identified as re- Community and Emergency Facilities gional assets not located within the City. Table 70 (Appen- Colleges and Universities dix 3, Tables) references source files used as the raw data Correctional Facilities for the critical asset inventory. A: spreadsheet version of Disaster Recovery Centers Table 70 is included as part of the Appendix 3 that includes Logistical Staging Area links to raw data assets and also to the regional assets Risk Shelter Inventory identified by the ARPC regional analysis. Transportation & Evacuation Data Gaps Bus Terminal In analyzing the City's critical asset layers, the project Ports team found that the City does not currently have Rail Facilities georeferenced shapefiles of the City's water, sewer Railroad Bridges or stormwater utility conveyance system. Additionally, georeferenced data identifying the City's sewer lift stations Critical Infrastructure is not available digitally. Electric Production and Supply Fac. Solid and Hazardous Waste Facilities The City received supplemental funding to address the Military Installations data gaps and those critical assets have been identified, Disaster Debris Management Sites documented, mapped and incorporated into the model for :o - 0. 2024 Vulnerability Assessment City of Apalachicola 13 Asset Identification Hospitals The following is a list of each critical asset type within each Weems Memorial Hospital required category and the number of assets within each type. Applicable asset types not identified have either Law Enforcement Facilities been identified in the ARPC Regional Vulnerability Analysis Apalachicola Police Department or are not applicable to this analysis. Local Government Facilities Critical Community and Emergency Apalachicola City Hall Facilities Franklin County Courthouse Assets included in the Critical Community and Emergency Fort Coombs Armory Facilities (CCEF) include Schools, Community Centers, DET 1CP A 3rd BTN Emergency Operations Centers, Fire Stations, Health Care Apalachicola Muncipal Library Facilities, Hospitals, Law Enforcement Facilities, Local Government Facilities, Affordable Public Housing and State Government Facilities State Government Facilities. Florida Dept. of Agriculture Shellfish Center The assets include publically-owned buildings and private- St. Vincent NWR Office ly-owned businesses, such as medical offices, that meet the definition of a critical community facility. The following Affordable Public Housing is al list of identified assets within the Community and Public Housing Complexes (10) Emergency Facilities category. Separate documents of tables and maps for exposure Schools analysis of the Critical Community and Emergency Facili- First Baptist Church School ties are included as part of this report. Apalachicola Bay Charter School Transportation and Evacuation Routes Community Centers Critical assets within the transportation and evacuation Apalachicola Community Center routes classification include airports and airport access Harbormaster House roads, bridges, major roadways, marinas, and evacuation Holy Famly Senior Center routes. There are no bus terminals, ports, rail facilities or railroad bridges within the City limits. Those assets are Emergency Medical Facilities addressed in the 2022 ARPC Regional VA. Weems Memorial Hospital Major Roadways Fire Stations The major transportation route within Apalachicola is U.S. Apalachicola Fire Department Highway U.S. 98. Iti is the primary route through Apala- chicola leading to Tallahassee on the east or Panama Healthcare Facilities City, to the west. This two-lane arterial road includes a left Sacred Heart Healthcare turn lane (going West) in the center of Apalachicola at the Weems Memorial Hospital corner of Market Street and Highway 98 (Avenue E). A left Tallahassee Orthopedics and Physical Therapy turn lane exists at Market and Avenue D going East. With Cardiology and Internal Medicine Group these exceptions, the rest of the roads are only two lanes. CVS Pharmacy The first four blocks of Market Street leading to Gorrie Buy Rite Drugs Bridge and Avenue E make up the main through-route within the city proper. The primary north to south circula- tion pattern occurs on 12th Street. There is one four way lighted intersection in Apalachicola at the intersection of Highway 98 and 12th Street and a blinking four way light at the intersection of Highway 98 and Market Street. Apala- chicola streets are set in a grid pattern. The newer streets of Apalachicola were laid out in a grid pattern but have been set at a slightly different angle. The avenues run 0 - o 0o 14 City of Apalachicola 2024 Vulnerability Assessment east to west in alphabetical order. The streets run north to Critical Infrastructure south in numerical order. Water, Commerce, and Market There are four identified types of assets within the Critical street represent first, second, and third street and these Infrastructure category: communications towers, wastewa- streets are laid out north to south. ter treatment facility, water treatment facilities, water utility conveyance system, stormwater utility conveyance sys- There are 51 roads listed in the attribute table for major tem, wastewater conveyance system. road assets within the City. Communication Towers Airports One communication tower is present in the city. The GT The Cleve Randolph Airport is located approximately three Com, Inc tower is located northwest of the downtown area miles west of the city of Apalachicola. Some of the higher in a sparsely developed part of the downtown. The base land around, it still has swales that flood at somewhat low of the tower and equipment is built on a filled pad that impact events. elevates the critical equipment. Flood scenarios are based on flood elevation and do not consider the elevation of any The airport has three runways. They are oriented N-S, NE- onsite equipment. GT Com would have to be contacted for SW, and NW/SE. The models show the N/S and NW/SE information regarding onsite elevation of critical operation- runways impacted on the all 500-year events. The NE/SW al equipment to determine specifics of impacts during the runway is shown as being impacted in the 2100, Intermedi- various scenarios. ate-High, 500-year event. The GT Com Land equipment facility is located at the At the request of the City Commission, the study includes south corner of Avenue E and 4th Street. This facility was one non-major access road. added to the attribute table. The facility is a grade level structure. Impacts for the facility are summarized in the Bridges Tables and Maps. The study area has one bridge, the Apalachicola River Bridge. The bridge abutment within the city is elevated and Wastewater Treatment Facility ascends at an abrupt rise. As such, the impacts shown in The wastewater treatment facility for the City of Apalachic- the table below include areas around the reinforced earth ola is located approximately 2 miles west of the western wall and the overhead bridge that are not impacted on the city limit north of Highway 98. The facility is located on bridge deck that is high above the impact area. moderately high ground that has been engineered and filled to facilitate operation. Marinas There are 14 marinas listed in the attribute table for assets The wastewater conveyance system is located through- under marinas. out the city. The wastewater conveyance system is two systems that were assessed separately. The system is a Evacuation Routes newer vacuum system and an older gravity system. The The attribute table for evacuation routes lists Highway 98 newer vacuum system is operated by a sequence of lift as the sole evacuation route. Evacuation is to the east station that transports the sewerage to the centrally locat- across. Apalachicola Bay or to the west towards Port St ed sewage vacuum/pump station at the corner of Avenue F Joe. Table 4.1P quantifies the impacts to Highway 98. The and 9th Street. The gravity sewage system also transports maps identify the specific areas in which flooding is antici- waste to the pump station. The pump station then pumps pated with each scenario. the sewage to the wastewater treatment facility to the west of the city. Boat Ramps There are 4 boat ramps listed in the attribute table for boat ramp assets for Apalachicola. Since boat ramps are locat- ed near sea level, the boat ramps are impacted by nearly all scenarios. < .o GooA 2024 Vulnerability Assessment City of Apalachicola 15 The wastewater conveyance system GIS components are surface waters; Apalachicola Bay and the Apalachicola lines that represent the pipes that transport to the pump River. These two assets are continuously flooded and are station and a line file that portrays the pipes that transport impacted by all scenarios. the sewage to the treatment facility. The gravity system and the vacuum lift system are mapped in two separate Shoreline GIS files. Each lift station has a calculated depth of inun- The shoreline of the City of Apalachicola is located in the dation for each scenario, as each lift station contains sen- supratidal zone, which is flooded currently by alternating sitive vacuum components and monitoring software that incomingloutgoing tidal action. The shoreline is impacted could be critically impacted by the various storm scenarios. by almost all scenarios. Impacts are summarized in the Tables and Maps. Wetlands Water Treatment Facility Wetlands occur at all elevations within the study area. The The City Water Treatment facility is located on Chapman preponderance of wetlands occurs fringing the shoreline at Road, west of the City and north of Highway 98, south the riverside and bayside, but some occur in the higher el- of the airport. The facility is located on fairly high ground evations due to collection of stormwater in closed depres- and as such is not impacted by any but the most severe sions, ponding in swale impoundments, with generally very storms. The facility is a grade level structure. poorly drained soils. The water utility conveyance system is located throughout Conservation Lands the city and consists of pipes, meters, valves, fire hydrants Fourteen conservation lands were included in the assess- and various fittings. The water conveyance GIS system ment. These include parks and lands owned by the local consists of lines which represent the pipes and points that and state governments. Also included is the City's RC represent the other various components. Portions of the zone for research and Conservation. The impacts of the water conveyance are affected by most storm scenarios various storm scenarios are summarized in the Tables and and are summarized in the Tables and Maps. Maps. Stormwater Utility Conveyance System Historic and Cultural Assets The stormwater utility conveyance system is located The Historic and Cultural Assets include all local, state, throughout the city and consists of pipes, culverts, storm and federally owned properties. There is overlap between boxes, curb inlets, manholes, and treatment boxes. In the the affordable housing section, as some of these proper- stormwater utility conveyance system GIS, the pipes are ties are listed as historic resources on the Florida State located as lines and the other components are mapped as Master Site File list of historic properties. points. In addition, the stormwater outfalls are mapped in a separate file. Impacts to the outlets are shown as true Additional Parameters Analyzed depths in the Tables. Impacts to the stormwater convey- Zoning ance system as well as outfalls are summarized in the As requested by the City Commission during the public Tables and Maps. meeting associated with the project and a requirement of the project, an assessment was done on the various Natural Resources and Historical Assets zoning districts within the city. The impacts of the various Assets of Natural, Cultural, and Historical Resources storm scenarios are summarized in the Tables and Maps. include Conservation Lands, Parks, Shorelines, Surface Waters, Wetlands, Historic and Cultural Assets. Upon the Airport Access Routes request of the City commission, parcel inundation impacts As requested by the City Commission during the public to lots based on zoning designation are included in this meeting associated with the project and a requirement of classification. the project, an assessment was done on the access roads to the airport. The impacts of the various storm scenarios Parks are summarized in the Tables and Maps. The City of Apalachicola currently has seventeen (17) parks. The Surface Waters GIS Attribute Table lists two :o .. 2ooA 16 City of Apalachicola 2024 Vulnerability Assessment Table 69 Inventory of Critical Assets (from Appendix 2 Tables) Asset Type Asset Class Inventoried Airports Transportation and Evacuation Routes yes Bridges Transportation and Evacuation Routes yes Bus Terminals Transportation and Evacuation Routes ARPC regional source Ports Transportation and Evacuation Routes ARPC regional source Major Roadways Transportation and Evacuation Routes yes Marinas Transportation and Evacuation Routes yes Rail Facilities Transportation and Evacuation Routes ARPC regional source Railroad Bridges Transportation and Evacuation Routes ARPC regional source Evacuation Routes Transportation and Evacuation Routes yes Wastewater Treatment Fac. & Lift Stations Critical Infrastructure yes Stormwater Treatment Fac. &Pump Stations Critical Infrastructure Data Gap Drinking Water Facilities Critical Infrastructure yes Water Utility Conveyance Systems Critical Infrastructure Data Gap Electric Production and Supply Facilities Critical Infrastructure ARPC regional source Solid and Hazardous Waste Facilities Critical Infrastructure ARPC regional source Military Installations Critical Infrastructure ARPC regional source Communications Facilities Critical Infrastructure yes Disaster Debris Management Sites Critical Infrastructure ARPC regional source Schools Critical Community and Emergency Facilities yes Colleges and Universities Critical Community and Emergency Facilities ARPC regional source Community Centers Critical Community and Emergency Facilities yes Correctional Facilities Critical Community and Emergency Facilities ARPC regional source Disaster Recovery Centers Critical Community and Emergency Facilities yes Emergency Medical Service Facilities Critical Community and Emergency Facilities yes Emergency Operation Centers Critical Community and Emergency Facilities yes Fire Stations Critical Community and Emergency Facilities yes Health Care Facilities Critical Community and Emergency Facilities yes Hospitals Critical Community and Emergency Facilities yes Law Enforcement Facilities Critical Community and Emergency Facilities yes Local Government Facilities Critical Community and Emergency Facilities yes Logistical Staging Areas Critical Community and Emergency Facilities ARPC regional soure Affordable Public Housing Critical Community and Emergency Facilities yes Risk Shelter Inventory Critical Community and Emergency Facilities ARPC regional source State Government Facilities Critical Community and Emergency Facilities yes Conservation Lands Natural, Cultural, and Historical Resource yes Parks Natural, Cultural, and Historical Resource yes Shorelines Natural, Cultural, and Historical Resource yes Surface Waters Natural, Cultural, and Historical Resource yes Wetlands Natural, Cultural, and Historical Resource yes Historical and Cultural Assets Natural, Cultural, and Historical Resource yes - :.. ..0. SooA 2024 Vulnerability Assessment City of Apalachicola 17 Sensitivity Analysis Task 4. - Sensitivity Analysis Description: The Grantee will perform the sensitivity analysis to measure the impact of flooding on assets and to apply the data from the exposure analysis to the inventory of critical assets created in the Exposure Analysis Task. The sensitivity analysis should include an evaluation of the impact of flood severity on each asset type and at each flood scenario and assign a risk level based on percentages of land area inundated and number of critical assets affected. Deliverables: The Grantee will provide the following: 4.1: A draft VA report that provides details on the findings of the exposure analysis and the sensitivity analysis, and includes visual presentation of the data via maps and tables, based on the statutory-required scenarios and standards; and 4.2: An initial list of critical and regionally significant assets that are impacted by flooding, prioritized by area or immediate need, specifying for each asset which flood scenario(s) it was impacted by. The list of critical and regionally-signlficant assets must be prioritized by area or immediate need and must identify which flood scenario(s) impacts each asset. ) .0 CooA 18 City of Apalachicola 2024 Vulnerability Assessment OVERALL FINDINGS AND IMPACTS Table 22 - Flood Depth Projections Per Scenarios NOAA predictive models (explained in the methodology FLOOD DEPTH PROJECTIONS! PER: SCENARIO section) were used to estimate impacts to the City based on intermediate low and intermediate high scenarios for a NOTE: Thet total acreage fort the Study Area of The Cityo of Apalachicola is1015.08 acres. SCENARIO SF ACRES DEPTH( (feet) 10-year, 50-year, 100-year, and 500-year storm. The mod- 2023 No_SLR 10-yr 5,555,313.06 127.53 0-9.56' els projected data for the present-day (2023), 2040, 2070, 2023 No-SLR_ 50-yr 7,410,083.6 170.11 0-12.45' 2023_ No-s SLR_1 100-yr 10,033,358.7 230.33 0-14.40' and 2100 scenarios. 2023_ No-s SLR_ 500-yr 27,877,539.3 639.98 0-20.38' 2023 NOSLR Tidal 119,185.8 2.74 0-1.26' Not surprisingly, the models show an increasing risk of 2040_ IntLo_ 10-yr 5,839,165.5 134.05 0-9.84" 2040_ IntLo_ 50-yr 7,895,613.8 181.26 0-12.73' flooding for the more severe model runs. That is, the Inter- 2040_ IntLo_ 100-yr 10,530,582.4 241.75 0-14.68' mediate-Low model is more severe than the 2023 pres- 2040_ IntLo_ 500-yr 29,399,936.3 674.93 0-20.66' ent day model and the Intermediate-High model is more 2040 IntLo_ Tidal 194,373.4 4.46 0-1.54' 2070 IntLo_ 10-yr 6,230,623.6 143.04 0-10.40 severe than the Intermediate-Low model. 2070 IntLo_ 50-yr 8,360,082.5 191.92 0-13.29' 2070_IntLo_ 100-yr 11,852,049.6 272.09 0-15.24' In general, the assumptions inherent in the NOAA models 2070_ IntLo_ 500-yr 29,399,936.3 674.93 0-21.22' 2070 IntLo Tidal 773,113.1 17.75 0-2.10' conclude that storm impacts will rise with time. The four 2100 IntLo_ 10-yr 6,547,033.8 150.30 0-10.89' timeframes of present-day, 2040, 2070, and 2100 show 2100_ IntLo_ 50-yr 8,769,330.3 201.32 0-13.78 2100_ IntLo_ 100-yr 12,650,330.8 290.41 0- -15.73' an increasing level of impacts with time. In addition, 2100_ IntLo_ 500-yr 36,337,527.6 834.19 0-21.71' the Intermediate-High model is more severe than the 2100_ IntLo Tidal 1,474,211.2 33.84 0-2.59' Intermediate-Low, model. The storm events of 10-year, 50- 2040 IntHi_ 10-yr 6,052,852.3 138.95 0-10.13' 2040 IntHi 50-yr 8,150,302.1 187.11 0-13.02' year, 100-year and 500-year also increase the severity of 2040 JntHL_100-yr 11,291,545.8 259.22 0-14.97 the outcome. Consequently, this report uses 35 scenarios 2040_ IntHi 500-yr 31,279,661.5 718.08 0-20.95' 2040_ IntHi Tidal 419,261.2 9.62 0-1.83' provided by NOAA to assess impacts to the City of 2070_ IntHi 10-yr 7,004,547.4 160.80 0-11.74' Apalachicola. 2070 IntHi 50-yr 10,462,507.4 240.19 0-14.63' 2070_ IntHi_ 100-yr 14,120,037.1 324.15 0-16.58' 2070_ IntHi 500-yr 40,005,236.7 918.39 0-22.56' 2070_ IntHi Tidal 2,389,009.6 54.84 0-3.44' Citywide flood depth projections - Elevation Matters 2100_ntHi 10-yr 9,440,504.4 216.72 0-14.06' 2100_ IntHi 50-yr 14,622,527.2 335.69 0-1 16.95' The total acreage of the City study area is 1015.08 acres. 2100_ IntHi_ 100-yr 19,900,462.5 456.85 0-18.90' Depending on location and elevation within the City flood 2100_ IntHi 500-yr 43,809,582.9 1,005.73 0-24.88' depths within the City are projected to range from zero 2100_ IntHi_ Tidal 5,782,014.7 132.74 0-9.77 to to more than 24 feet in flood depth for the most most severe 2100 intermediate high 500 year scenario. Table 22 from the Exposure Analysis Table Series shows the flood depth projections per scenario. All of the exposure maps and tables can be found in the map and table series found within Appendix 2 and 3. Critical assets are identified within each scenario map. An analysis of those impacts on land area and assets follows. - :o ..0. o 2024 Vulnerability Assessment City of Apalachicola 19 Risk Assessment Performing a Sensitivity Analysis requires measuring the Understanding Why there is Risk impact of flooding on assets by applying the data from The City of Apalachicola is located west of the junction of the exposure analysis to the inventory of assets and then the Apalachicola River and Apalachicola Bay. The City evaluating the impact of flood severity on each asset type covers approximately 2.0 square miles, approximately and at each flood scenario by assigning a risk level based 1,050 acres. Iti is bound on the east by the Apalachicola on percentage of land area inundated and number critical River, on the south by Apalachicola Bay, on the north by assets affected. Scipio Creek, and the west by rural development and un- developed forest land. The sensitivity analysis requires two sets of risk assess- ment - one for land area inundation and the other for Elevations within the City generally range between 0 and assets. 16 feet. The City is generally low relief in terms of eleva- tion. Some areas are located in lower elevations close Determining Land Area Risk Assessment to sea level and some areas are on broad, low hills. The The overall risk assessment established for land area higher elevations coincide with sandy, well drained hills. inundation ranges from none to extreme and is based on The lower elevations are generally poorly drained. The percentages ranging from 0 to more than 75% inundation lower elevations are also more prone to flooding. The of the land area. See Table 59. The table establishes a lower elevations are along the shoreline and inland for two uniform assessment in order to simplify ranges of varying blocks, generally. The City has approximately 20,000 linear percentages into a standardized evaluation to compare feet of shoreline. impacts across the range of storm scenarios. As in the 2017 Vulnerability Assessment, the vulnerable Determining Asset Risk Assessment land areas within the City are those tracts that lie along Similarly, the assets potentially impacted by each storm the river, the bay or fall within an ancient streambed that scenario were ranked based on their location and flood are floodprone during storm events. Tables 24 through 58 depth within each flood scenario. A percentage of the identify the percentage of land areas inundated during all critical assets affected within each asset class determined storm scenarios along with the risk assessment assigned the risk assessment of none to extreme. See Table 59. based on the methodology discussed earlier. Each asset was assigned the appropriate risk designation within each storm scenario. A comprehensive risk assess- Maps 1 through 312 in the map series show the depths of ment was then assigned to each storm scenario based on inundation possible in each storm scenario. the aggregate of designations of assets within each storm scenario. Generally, the more severe of each designation Maps beginning with 332 in the map series show the inun- guided the designation. For instance, if a storm scenario dation and extent to which the water flow would spread. had 3 low designations wand 2 medium designations, the storm scenario would be assigned a medium designation, as this is more severe. This was necessary to ensure that risk was not being overlooked or downplayed. Table 59 (from Appendix 3 Maps) - Risk Assessment Ranking - Land Area Inundation Overall Risk Assessment Land Area Inundated Critical Assets Affected (% of census tract or (%-age of total assets within each neighborhood) Asset Type) None 0% 0% Low <25% <25% Medium 25 - 50% 25 -5 50% High 50 - 75% 50-7 75% Extreme >75% >75% < o e oo 20 City of Apalachicola 2024 Vulnerability Assessment Risk Level Percentages Risk level percentages are designated into the categories Medium - 25-50% shown in Table 59. The designations are meant to group Based on the Risk Assessment Table 59, a 2100 IntHi 100- similar flooding events that happen across time projec- Year Storm could produce a flood that might inundate up to tions, scenario models, and occurrence probability that 45% of the City's land area. That area is visualized on Map produce similar impacts. Increasing impact risk levels are 333. (Appendix 3 Maps). an elevation phenomenon in that low elevation areas will experience progressively more severe impacts in depth of flooding. Higher elevation areas will not experience the In addition to the flooding impacts that occur in the Low impacts of the lower Risk Level events, but higher Risk Risk areas discussed above, during a Medium Risk event, Levels will produce similar impacts. the flood prone areas expand landward from the bound- aries of a Low Risk event. The low elevation commercial The risk level percentages refer to the inundation area of downtown area has expanded into the higher elevation the City Limits of the City. As discussed above, areas of commercial downtown area. lower elevation are more prone to flooding. The City has three (3) areas of low elevation. The low elevation residential area north of Apalachicola 1) The commercial waterfront, located on the eastern area Bay has expanded into the higher elevation residential of the city; area, and the L-shaped relict creek bed residential area 2) The residential waterfront, located on the south side of has also expanded. the city, which is fringed with a marsh, and; 3) The relict creek bed, located in the south and east cen- High - 50- 75% tral area of the city. This area has been historically partially Based on the Risk Assessment Table 59, a 2040 IntHi 500- filled, which causes more severe flooding to the unfilled Year Storm could produce a flood that may inundate more areas. than 70% of the City's land area. That area is visualized on Map 334. (Appendix 3 Maps). Likewise, the city has higher elevated areas, which are less prone to flood, except during the higher risk scenari- OS. The City has two (2) areas of higher elevation. Al high Risk Level produces flooding in all but the highest 4) The higher commercial downtown area, and: areas located generally between Avenue G and Avenue 5) The remaining majority of the city generally at elevations M and 5th Street through 16th Street and the area in the above 10'. northwest city between Bluff Road and Timothy Simmons Street. There are other small islands of non-flooded areas, The percentage of flooded area was calculated without as well. respect to depth for the risk level percentages. Impacts to the areas listed above will be discussed later in the report. Extreme - >75% Low - Less Than 25% Based on the Risk Assessment Table 59 (Found in Table Based on the Risk Assessment Table 59, a 2023 NSLR series and on Page 18) a 2100 IntHi 500-Year Storm could Rise 100-Year Storm could produce an inundation con- produce a flood that could inundate more than 99% of sidered low yet could inundate an estimated 22.7% of the City's land area. That area is visualized on Map 335. the City's land area. That area is visualized on Map 332. (Appendix 3 Maps). (Appendix 3 Maps). During a Low Level Risk event, flooding impacts occur on An extreme Risk Level produces a total, catastrophic inun- the low elevation commercial area west of the Apalachicola dation of the City of Apalachicola. River, the low elevation residential area north of Apalachic- ola Bay, and the L-shaped relict creek bed residential area in the east-central part of the town. Flooding also occurs Asset Risk Assessment in the northern part of the city that backs up low drainage Tables 24 -58 also identify the critical assets affected areas. within each storm scenario and determine the percentage of that asset class and assigns a risk assessment for that asset class. : o a 0. 2024 Vulnerability Assessment City of Apalachicola 21 Table 59 - Risk Assessment Summary Land Area Inundation and Risk Assessment SCENARIO Land Area Risk Inundated Assessment %-age of asset tract 2023_ No_SLR_ 10-yr 12.6 Low 16.8 Low 2023.NO-SLR.50-yr 2023_No-SLR_100- 22.7 Low yr 2023_No-SLR_500- 63.0 High yr 2023_ NoSLR_Tidal 0.3 Low 2040 IntLo_ 10-yr 13.2 Low 2040_ IntLo_ 50-yr 17.9 Low 2040_ IntLo_ 100-yr 23.8 Low 2040 IntLo_ 500-yr 66.5 High 2040_ IntLo_ Tidal 0.4 Low 2070_IntLo_ 10-yr 14.1 Low 2070_IntLo.50-yr 18.9 Low 2070_IntLo_ 100-yr 26.8 Medium 2070 IntLo_ 500-yr 66.5 High 2070_IntLo Tidal 1.7 Low 2100 IntLo_ 10-yr 14.8 Low 2100_ IntLo_ 50-yr 19.8 Low 2100.IntLo.100-yr 28.6 Medium 2100_Intlo.500-yr 82.2 Extreme 2100_IntLo Tidal 3.3 Low 2040_IntHIL10-yr 13.7 Low 2040_IntHi_50-yr 18.4 Low 2040_ IntHi_ 100-yr 25.5 Medium 2040 IntHi_ 500-yr 70.7 High 2040_ IntHi_ Tidal 0.9 Low 2070_ IntHi_ 10-yr 15.8 Low 2070_IntHIL.50-yr 23.7 Low 2070_IntHi 100-yr 31.9 Medium 2070 IntHi_ 500-yr 90.5 Extreme 2070 IntHi_ Tidal 5.4 Low 2100 IntHi_ 10-yr 21.4 Low 2100_IntHi 50-yr 33.1 Medium 2100_IntHi 100-yr 45.0 Medium 2100_IntHi 500-yr 99.1 Extreme 2100_IntHi_ Tidal 13.1 Low . o e 00. 22 City of Apalachicola 2024 Vulnerability Assessment Map 332 2023 No Sea Level Rise 100-Year Storm - Low Inundation City Flood of Extents Apalachicola Vulnerability, CITY of Apalachicola Assessment Update 2023, No SLR, 100 year event 2024 EERE A Earlin 8 Juff 3d H ai ) C R a - 09 a 6 & & - 09 89 3 C v Sy - 2 a 0 2 4 3 - - 6 a - B 9 a - d - 9 E - 0 8 6 , % & 2 Pwa.esiRAwAw a 9 1 4 9 8 0 - - - 8 & 08 8 0 a St - 2 a 0 2 C St in - 8 0 69 atbes G 3 - 6 3 à B - % 2 - - n a - - 6 6 0 - % a - 8 2 a 3 - Sy - - - R - - - B - & a Mey - - - 2 8 - C a 8 - - - 2 a - - N - - 2 9 2 B - 0.5 1 caydApalschicola: 2025 Miles : :.0. GoA 2024 Vulnerability Assessment City of Apalachicola 23 Map 333 - 2100 IntHi 100-Yr Storm - Medium Inundation City of Apalachicola CITY of Apalachicola Flood Extents Vulnerability Assessment Update 2100, Intermediate-High, 100 year event 2024 I luffRd 477 - y X 2 - 2 28 69 0 08 29 a / a a 8 B 3 8 a - 8 3 -. % - 8 9 - Sus, a & asaOw-BIVaNapJIA.CORe - 1 3 B s a St 2 S Les sle - - B - - 80 SL 0 - B 0 B B Su, 2 orb pe 0 % > 3 - - 0 30 - 8 Bbbby Cate % a 4 2 - 2P B0 8 - - 3 6 a 3 0 nt 09 0 & - C a 9 a - & 2) & : 5 G RA A a SA 0R & - E 80 - C5 A - et st m 2 B - - MA % 0 0 nl - I a 0 8 - 0 20 N à : S 3 Adams St st 2nd St Cenlar ) 0.5 ClydfApalachicols; 2025 Miles e o. oo 24 City of Apalachicola 2024 Vulnerability Assessment Map 334 - 2040 IntHi 500-Yr Storm - High Inundation City of Apalachicola CITY of Apalachicola Flood Extents Vulnerability Assessment Update 2040, Intermediate-High, 500 year event 2024 & - & a 30 a 2 2 8 a Sy 0 80 8 8 A 3 2 2 - - C -. 2 3 à , s a hha a , - 4 s 1 _NOAA-2017-Inter - FloodMap_ nediate-High.2040. 500-year 3 - 3 2 2 2 & 4 9 08 3 23 2 & 8 a 2 8 & 51 4, BR d 8 e 8 2 a 80 2 & a 0 - aa & & Bobby Cato 9 P a a 7 b - % - & 6 sy Cornelll - Rizer, S4 & s M 66 s - ha & a S FredMeyer St le 6 2 0 - e SIs 2 N et St hh, % a - % - N a 6 E Adams St S1 St Cenler 0 0.5 - do fApalachi ola 2025 Miles cayol - - - 0. .0.o . oo 2024 Vulnerability Assessment City of Apalachicola 25 Map 335 2100 IntHi 500-Yr Storm - Extreme Inundation City of Apalachicola CITY of Apalachicola Flood Extents Vulnerability, Assessment Update 2100, Intermediate-High, 500 year event 2024 - 6 * BluffR Rd I se b, y % / a - T P * a a a - a % a S Earl King St , & a FloodMap NOAA- 2017-1 Intermediate- High_ 2100 500-y year A P & P 6 6 S - Rex Buzzett St Les slle 1, 6, s St % B6, G Forbes Timothys Simmons St G CH, e % Tn, Bobby Cato St S , % 6 A, "o wo Cornelllus Rizer St - 9 - s f e a a S s - Fred Meyer St 6 6 € a - a 5 € S 15s, 1an Ellis Van Fleet St s W TE > 4 The Prado C N - t - E Adams St st 5 nd St y Cenlar 0.5 Js Miles ctyalApalachicola, 2025 - :. oo 26 City of Apalachicola 2024 Vulnerability Assessment Impacts to Assets Asset Impacts The table and map series (Appendix 2 and 3) identify and The Harbormasters House is impacted at 2100 illustrate the impacts to the critical assets within the City Intermediate-High Tidal and at 2023 No-SLR 10- for each model run and scenario. Additionally, the map and year as well as all more severe scenario storms. The table series identify and illustrate which assets fall within Harbormaster's House is an elevated structure. the low, medium and high storm events. The Apalachicola Community Centeris not impacted by any Tidal scenarios. It is impacted at 2023 No-SLR 50- Table 66, shown on page 49 of this report (from Appendix year, 2040 Intermediate Low 50 year, 2070 Intermediate 2- Tables) identifies prioritized list of assets impacted by Low 50-year, 2100 Intermediate Low 10-year, 2040 flooding and specifying which flood scenarios impact each Intermediate High 50-year, 2070 Intermediate High 10- asset. year, and 2100 Intermediate High 10-year as well as all more severe scenario storms. The Community Center is The following is a summary of the potential projected an elevated structure. impact of flooding on each asset. The Franklin County Courthouse is not impacted by any Tidal scenarios. Iti is impacted at the 2023 No-SLR 100- In general, the assumptions inherent in the NOAA models year, 2040 Intermediate-Low, 100-year, 2040 Intermediate conclude that storm impacts will rise with time. The four High 100-year, 2070 Intermediate Low 100-year, 2100 time frames of present-day, 2040, 2070, and 2100 show Intermediate Low 100-year, 2040 Intermediate High 100- an increasing level of impacts with time. In addition, year, 2070 Intermediate High 100-year, 2100 Intermediate the Intermediate-High model is more severe than the High 50-year and all more severe scenarios. Intermediate-Low model. The storm events of 10-year, 50- . Buy Rite Drugs is not impacted by any Tidal scenarios. It year, 100-year and 500-year also increase the severity of is impacted at 2023 No-SLR 100-year, 2040 Intermediate the outcome. Consequently, this report uses 35 scenarios Low 100-year, 2070 Intermediate Low 100-year, 2100 provided by NOAA to assess impacts to the City of Intermediate Low 100-year, 2040 Intermediate High 100- Apalachicola. year, 2070 Intermediate High 50-year, 2100 Intermediate High 50-year and all more severe scenarios. IMPACTS TO CRITICAL COMMUNITY AND . The Department of Ag Shellfish Center is not impacted by EMERGENCY FACILITIES any Tidal scenarios. It is impacted at 2023 No-SLR 500- year, 2040 Intermediate Low 500-year, 2070 Intermediate Assets included in the Critical Community and Emergency Intermediate Low 500-year, 2100 Low 500-year, 2040 Facilities include Schools, Community Centers, Intermediate High 500-year, 2070 Intermediate High Emergency Medical Service facilities, Emergency 500-year, 2100 Intermediate High 500-year and all more Operations Centers, Fire Stations, Health Care Facilities, Hospitals, Law Enforcement Facilities, Local Government severe scenarios. . Sacred Heart Healthcare is not Tidal Affordable Facilities, Public Housing and State impacted by any scenarios. It is impacted at 2023 No-SLR 2040 Government Facilities. 500-year, Intermediate Low 500-year, 2070 Intermediate Low 500- year, 2100 Intermediate Low 500-year, 2040 Intermediate The flood impacts to the Critical Community and 500-year, 2070 Intermediate High 100-year, 2100 Emergency Facilities are summarized in Table 4 (Appendix High Intermediate High 50-year and all more severe scenarios. 2) and Maps 1-29 (Appendix 3) Impacts to the identified The Fort Coombs Armory is not impacted Tidal Critical Community and Emergency Facilities are by any scenarios. It is impacted at 2023 No-SLR 500-year, 2040 discussed below. Intermediate Low 500-year, 2070 Intermediate Low 500- shows year, 2100 Intermediate Low 500-year, 2040 Intermediate The point at which the asset impacts for each High 500-year, 2070 Intermediate High 500-year, 2100 year and scenario is listed; more severe storms will also Intermediate High 500-year and all more severe scenarios. show impacts but are assumed since impacts are present assets The DET 1 COA3rd BTNfacility is not impacted by in the lower intensity storms. All in this category any Tidal scenarios. It is at 2023 No-SLR 500- treated are as points, except the Affordable Public impacted year, 2040 Intermediate Low 500-year, 2070 Intermediate housing, which is treated as an area. Table .tabulates Low 500-year, 2100 Intermediate Low 500-year, 2040 the Affordable Housing asset impact square footage and acreage since the asset is an area in the GIS attribute table. o ..0. 00. 2024 Vulnerability Assessment City of Apalachicola 27 Intermediate High 500-year, 2070 Intermediate High year, 2040 Intermediate Low 500-year, 2070 Intermediate 500-year, 2100 Intermediate High 500-year and all more Low 500-year, 2100 Intermediate Low 500-year, 2040 severe scenarios. Intermediate High 500-year, 2070 Intermediate High The Tallahassee Orthopedics and Physical Therapy is 500-year, 2100 Intermediate High 500-year and all more not impacted by any Tidal scenarios. It is impacted at 2023 severe scenarios. No-SLR 500-year, 2040 Intermediate Low 500-year, 2070 Cardiology and Internal Medicine Group, which is located Intermediate Low 500-year, 2100 Intermediate Low 500- in the former Apalachicola Elementary School Auditorium year, 2040 Intermediate High 500-year, 2070 Intermediate is not impacted by any Tidal scenarios. It is impacted High 500-year, 2100 Intermediate High 500-year and all at 2023 No-SLR 500-year, 2040 Intermediate Low 500- more severe scenarios. year, 2070 Intermediate Low 500-year, 2100 Intermediate . St Vincent NWR Office is not impacted by any Tidal Low 500-year, 2040 Intermediate High 500-year, 2070 scenarios. It is impacted at 2023 No-SLR 500-year, 2040 Intermediate High 500-year, 2100 Intermediate High 500- Intermediate Low 500-year, 2070 Intermediate Low 500- year and all more severe scenarios. year, 2100 Intermediate Low 500-year, 2040 Intermediate The Holy Family. Senior Center is not impacted by any High 500-year, 2070 Intermediate High 500-year, 2100 Tidal scenarios. Iti is impacted at 2023 No-SLR 500-year, Intermediate High 500-year and all more severe scenarios. 2040 Intermediate Low 500-year, 2070 Intermediate . CVS Drugs is not impacted by any Tidal scenarios. It is Low 500-year, 2100 Intermediate Low 500-year, 2040 impacted at 2023 No-SLR 500-year, 2040 Intermediate Intermediate High 500-year, 2070 Intermediate High Low 500-year, 2070 Intermediate Low 500-year, 2100 500-year, 2100 Intermediate High 500-year and all more Intermediate Low 500-year, 2040 Intermediate High 500- severe scenarios. year, 2070 Intermediate High 500-year, 2100 Intermediate Apalachicola City Hall is not impacted by any Tidal High 500-year and all more severe scenarios. scenarios. It is impacted at 2023 No-SLR 500-year, 2040 . The Apalachicola Police Department is not impacted by Intermediate Low 500-year, 2070 Intermediate Low 500- any Tidal scenarios. It is impacted at 2023 No-SLR 500- year, 2100 Intermediate Low 500-year, 2040 Intermediate year, 2040 Intermediate Low 500-year, 2070 Intermediate High 500-year, 2070 Intermediate High 500-year, 2100 Low 500-year, 2100 Intermediate Low 500-year, 2040 Intermediate High 500-year and all more severe scenarios. Intermediate High 500-year, 2070 Intermediate High - Affordable Public Housing is not impacted by any Tidal 500-year, 2100 Intermediate High 500-year and all more scenarios. They are impacted at 2023 No-SLR 500-year, severe scenarios. 2040 Intermediate Low 500-year, 2070 Intermediate . The. Apalachicola Volunteer Fire Depti is not impacted by Low 500-year, 2100 Intermediate Low 500-year, 2040 any Tidal scenarios. It is impacted at 2023 No-SLR 500- Intermediate High 500-year, 2070 Intermediate High year, 2040 Intermediate Low 500-year, 2070 Intermediate 500-year, 2100 Intermediate High 500-year and all more Low 500-year, 2100 Intermediate Low 500-year, 2040 severe scenarios. Intermediate High 500-year, 2070 Intermediate High 500-year, 2100 Intermediate High 500-year and all more Observed Impact Notes by Asset severe scenarios. Schools, Community Centers, Emergency Medical Service The First Baptist Church Schoolis not impacted by any Facilities, Emergency Operation Centers, Fire Stations, Tidal scenarios. It is impacted at 2023 No-SLR 500-year, Health Care Facilities, Hospitals, Law Enforcement 2040 Intermediate Low 500-year, 2070 Intermediate Facilities, Local Government Facilities, and Affordable Low 500-year, 2100 Intermediate Low 500-year, 2040 Public Housing are all structures and are impacted by Intermediate High 500-year, 2070 Intermediate High the severity of the scenario and hence depth of the storm 500-year, 2100 Intermediate High 500-year and all more surge. severe scenarios. - The Apalachicola Bay Charter School is not impacted by Some of the structures are elevated and consideration any Tidal scenarios. It is impacted at 2023 No-SLR 500- must be shown by deducting the elevation of the structure year, 2040 Intermediate Low 500-year, 2070 Intermediate from the impact depth. Low 500-year, 2100 Intermediate Low 500-year, 2040 Intermediate High 500-year, 2070 Intermediate High NOTE: Harbormaster's House is approximately 8' above 500-year, 2100 Intermediate High 500-year and all more grade to the lowest structural member and approximately severe scenarios. 10' above grade to the finished floor. The Apalachicola Municipal Libraryis not impacted by any Tidal scenarios. It is impacted at 2023 No-SLR 500- e : 28 City of Apalachicola 2024 Vulnerability Assessment Map 2 (from Appendix 3) Critical Community and Emergency Facilities 2023 No SLR 10-YR Critical Community and Emergency Facilities Flood Depths CITY of APALACHICOLA 2023, No SLR, 10 year event Vulnerability, Assessment Update 2024 eewN # CV # 2 2 CIYLIIT # # H DER 2 > R Albordable Pubie_Housing. Lapalachicola 2023 HIE 0 0 g_restau apalachicol may18 I B 3 2 6 locals govemment Lacites.a apalachicola aug19 9 - 8 B 6 % B9 B communiye centers_ apalachicola 2023 B9 B9 2 9 - schools_ apalachicola. 2023 a B9 C 89 2 Care healh care faclifes apalachicola.2 2023 & B 8 2 lawLenforcement apalachicolaa aug19 08 - 2 - 0 IRTHOUSE sep17 % 8 peosplaiupauhtalas 80 3 2 2 2 ge.correcional sep17 2 spa.Atpe 9 2 Center CHICOGAF DEPARTMENT 0-5 * 501- 9.54 - 2 3 % 6 2 5 2 < - 0 & 2 TAI TZ L - ED U 4 DE B AVAI or V I 5 CtyotApatachiola. 2024 Miles Map 2 Represents a Low Risk Assessment (Less Than 25% Critical Assets Affected) within the Community and Emer- gency Facilities Category for selected model run. - .o. 2ooA 2024 Vulnerability Assessment City of Apalachicola 29 Map 5 (from Map Series) Critical Community and Emergency Facilities 2023 No SLR 500-YR Critical Community and Emergency Facilities Flood Depths CITY of APALACHICOLA 2023, No SLR, 500 yeare event Vulnerability, Assessment Update 2024 CIYLIMIT Allordable. Puble Housing. apalachicola 2023 E R ge_frestata apalachicola mayi8 > locaLgovemmenu facibes apalachicola_ aug19 2 communiys centers, apalachicola_ 2023 2 RGs schools apalachicola 2023 9 3 health care facltes apalachicola 2023 2 89 law_e enforcement apalachicolaa aug19 2 - ge.hospkals.a apalachicola sep17 2 3 ge.comectiomatLsept7 2 V-aU.pe > % > a * 5 6 THOUSE 0-5 2 2 5.01-10 ent 10,01- 15' CHICO MENT 15.01- 20 20.01- 20.38' D ut AII Dim as Map 5 Represents a Medium Risk Assessment (Between 25-50% Critical Assets Affected) within the Community and Emergency Facilities Category for selected model run. ..0. - GoA 30 City of Apalachicola 2024 Vulnerability Assessment Map 13 (from Map Series) Critical Community and Emergency Facilities 2040 IntHi - 500-YR Critical Community and Emergency Facilities Flood Depths CITY ofA APALACHICOLA Vulnerability Assessment Update 2040, Intermediatel High, 500 year event 2024 CYLIMIT Alordabia PublcH Housing. palachicola. 2023 & ge_frestat apalachicola_ mayia localLs govemment acifes apalach pla ugi 19 munity centers apalachicola 2023 2 & o schools_ apalachicola 2023 89 8 3 healhs care. faclities apalachicola 2023 % 2 8 88 0 law_enforcement apalachicola aug19 - 9c hospitalsa apalachicolas sep17 3 B 0 2 ge.correctional sep17 2 29 Apalachicol2,NOAA.207-ntemedlate-lr - - G * 39 0 THOUSE 0-5 2 a 2 * 5.01-1 10' Cente 10.01- 15 CHICOLA N 15.01"-3 20 6 & 20.01"- 20.94 2 2 a L - utnu EI TDI DPET A 4 Map 13 Represents a High Risk Assessment (Between 50-75%% Critical Assets Affected) within the Community and Emergency Facilities Category for selected model run. - :o ..o. 0o 2024 Vulnerability Assessment City of Apalachicola 31 Map 21 (from Map Series) Critical Community and Emergency Facilities Depth - 2070 IntHi 500 Year Critical Community and Emergency Facilities Flood Depths CITY ofA APALACHICOLA 2070, Intermediate High, 500 yeare event Vulnerability. Assessment Update 2024 touse CITYLIMIT Aliordable Public Housing, apalachicola.2 2023 ge.firestal apalachicola may18 locals governmenl faciffes apalachicolaa aug19 community centers apalach kcola2023 schools Lapalachicola 2023 2 2 health care. facktes apalachicola. 2023 law. enforcementy apalachicolaa aug19 2 2 > sep17 a pa.hospitalsa apalachicolas 2 pe.camectonalsepi7 2 2 eMsapowaNTAa.Aeat - - 2 2 C 52 o-s 501- 10 te 10.01- 5 A ENT CHICOLAPO 15.01- 20 > 20.01- -22.55 api 2 2 3% 2 Mey 2 & & 2 I 2 3 I LU T 15 U a IU MTDI DA Miles Map 21 Represents an Extreme Risk Assessment (More than 75% Critical Assets Affected) within the Community and Emergency Facilities Category for selected model run. :o 0 GOA 32 City of Apalachicola 2024 Vulnerability Assessment IMPACTS TO CRITICAL WWTP and Lift Stations Impacts to the WWTP are documented in the maps and INFRASTRUCTURE FACILITIES tables. The components of the sewage collection and There are four identified types of assets within the Critical treatment system that would be impacted are as follows: Infrastructure category: communications towers, wastewa- - The WWTP located west of the City. The extents and ter treatment facility, water treatment facilities, water utility depths of impacts to the WWTP will be assessed by the conveyance system, stormwater utility conveyance sys- City personnel who have expertise in the workings and tem, wastewater conveyance system. repair of the system. iti is beyond the scope of work to doc- ument impacts occurring based on all scenarios; The flood impacts to the Critical Infrastructure Facilities The vacuum pump station located at the intersection are: summarized in Tables 2-7 (Appendix 2) and illustrated of Avenue F and 10th Street. The vacuum pump system in Map series 30-139 (Appendix 3). The point at which collects effluent from the city and pumps it to the WWTP. It the asset shows impacts for each year and scenario is is a critical element in the collection system. The station is listed; more severe storms will also show impacts but are located in the relic creek bed at a fairly low elevation. Even assumed since impacts are present in the lower intensity though the pump itself and the controls are elevated within storms. the building, this component is thought to be a weak link in the post-storm recovery. Plans are in the works for another Projected Impacts vacuum pump station to be constructed. The asset for Communication is the GT Com tower The vacuum left stations distributed in the large portion located at Commerce Street between Avenue G and of the City that is on the vacuum system contain sensitive Avenue H. It is impacted by the 2100, Intermediate High electronics that monitor sewage flow and operation of Tidal Flooding scenario, but no other tidal scenarios. It is the vacuum system. As such, they are a critical link in the impacted by all other storm scenarios. operation of the system. As documented in the maps and The asset for wastewater treatment facilities is the tables, lift stations are affected by all storm surge scenar- wastewater treatment facility. It is located approximately ios. The protection of these devices are paramount in the two miles west of the western city limit, north of the protection and repair during storm events. highway, on Highway 98. It is not impacted by any The gravity system made up of manholes and piping. tidal flooding scenarios. It is impacted by all 500-year The manholes are a source of leakage of stormwater in scenarios. It is also impacted by the 2100, Intermediate flooding events and piping of the gravity sewage system is High, 50-year and 100-year scenarios. primarily composed of old terra cotta pipe that is cracked . The assets for Public Water Supply are the water tower in places. The infiltration of the manhole and piping causes and well at 5th Street between Avenue J and Avenue complications of volume at the WWTP that tax the ability of K and the water treatment facility at Chapman Road in the facility to treat the effluent. Greater Apalachicola. The water treatment plant and the water tower are both impacted by 2100, Intermediate-Low, Stormwater 500-year, 2070, Intermediate-High, 500-year and 2100, The stormwater system is a passive system based on the Intermediate-High, 500-year scenarios. flow from gravity. Stormwater from a scenario will back-up Observed Impact Notes by Asset through the piping and rise to the elevation of the flooding For minor storms, City personnel in charge of the post- event. One major drainage basin outfall is equipped with storm cleanup remain, monitor, and make changes to the a backflow preventer device that prevents stormwater infrastructure, such as valve closure that has shown to be infiltration through the piping. However, during all but minor beneficial in the past towards preventing damage to the storm events, flooding occurs when stormwater rises over infrastructure. However, in more major storms or major the containment structure or land and floods the surround- storms that are projected to impact the City, City personnel ing areas. Consideration should be given to assessing might be evacuated and there could be a delay of a day or whether these devices could be added to other outfalls, as two in their resuming duties. Upon their return delays such feasible. as power and communication outages cause delays to the repair and resuming of services. :o .. e - oos 2024 Vulnerability Assessment City of Apalachicola 33 Drinking Water Facilities The water treatment plant is at a fairly high elevation and will not be impacted except in the more severe events. The water piping and valves and meters are for the most part buried, however there are several valves that rely on electricity, but that can be manually operated. As such, the water treatment facility is considered low risk. Communication Facilities Impacts to the two communication facilities are document- ed in the maps and tables.. 0 :.0. CooA 34 City of Apalachicola 2024 Vulnerability Assessment Map 32 (from Map Series) Critical Infrastructure Sewer Depth - 2023 No SLR 100 Year X CITY of Apalachicola Critical Infrastructure Vulnerability Assessment Update Sewer Utilities Impacts 2023, No-SLR, 100-year event 2024 - Apalnef.Sewe.Namioles, AMAVCSmaRSN MMASA A.Sa.Spim.mn Apalachicola Flood Map Depths 0-5 5'-10' 10'- 15' / 137 2 129 - i sor Rd dI 62 PIe T 0.5 Miles ETTiRCASe Map 32 Represents a Low Risk. Assessment (Less than 25% Critical Assets Affected) within the Critical Infrastructure Sewer Facilities Category for selected model run. - : - .. SooA 2024 Vulnerability Assessment City of Apalachicola 35 Map 38 (from map series) Critical Infrastructure Sewer Depth - 2040 IntLo 100 Year V x CITY of Apalachicola Critical Infrastructure Vulnerability. Assessment Update Sewer Utilities Impacts 2040, Intermediate-Low, 100-year event 2024 ( X palid.Sewar.Mamiols, MAMCSA.AumA .SAXAASA plsa.Smw.Spl.ma Apalachicola Flood Map Depths 0-5 5'-10' 10'- 15' - E N 0.5 1 Miles ogperSieriMafamde contribufors. CCBYSA Map 38 represents a Medium Risk Assessment (between 25-50% Critical Assets Affected) within the Critical Infrastruc- ture Stormwater Facilities Category for selected model run. .. GoA 36 City of Apalachicola 2024 Vulnerability Assessment Map 83 (from map series) Critical Infrastructure Stormwater Depth - 2070 IntLo 10 Year CITY of Apalachicola Critical Infrastructure Vulnerability, Assessment Update Stormwater Utilities Impacts 2070, Intermediate Low, 10-year event 2024 & R S - MI Rt S BRR Apala.Semale.Ouatals: Apisa.Slommala_Pants: Apaa.Somsu.Poyine: Apalachicola Flood Map! Depths 0-5' 5'- 10' 10'-15' 1 28 - 24 1Z A A E I B D PTO AD 0.5 1 Miles OgpenSTRIMapfarae contrib utors. CGBYSA Map 38 represents a High Risk. Assessment (between 50-75% Critical Assets Affected) within the Critical Infrastructure Stormwater Facilities Category for selected model run. L o ... o 2024 Vulnerability Assessment City of Apalachicola 37 Map 85 (from map series) Critical Infrastructure Stormwater Depth - 2070 IntLo 100 Year CITY of Apalachicola Critical Infrastructure Vulnerability, Assessment Update Stormwater Utilities Impacts 2070, Intermediate Low, 100-year event 2024 6 o 0 uil Road Apmia.Somalw.oatas, Apalad.Slomalu.Pons: Apalas.Somau.Payns, Apalachicola Flood Mapl Depths 0-5 5'-10' 10'- 15' 15-20' FredM TUT Hilll AL Do 1L 0.5 a Miles awcMArsanceeN Map 85 represents an Extreme Risk Assessment (more than 75% Critical Assets Affected) within the Critical Infrastruc- ture Stormwater Facilities Category for selected model run. : - .0.0. - GooA 38 City of Apalachicola 2024 Vulnerability Assessment IMPACTS TO NATURAL, CULTURAL AND HISTORICAL FACILITIES City Square and Community Garden: The park is located adjacent to the Chestnut Street cemetery on Assets of Natural, Cultural, and Historical Resources moderately high land. The area is impacted by all 100- include Conservation Lands, Parks, Shorelines, Surface year and 500-year scenarios. It is also impacted by the Waters, Wetlands, Historic and Cultural Assets. Upon the 2070 Intermediate-Low and Intermediate-High, 50-year request of the City commission, parcel inundation impacts scenarios. to lots based on zoning designation are included in this classification. Riverfront Park: The park is located on the riverfront downtown. Its location makes it prone to flooding events. The flood impacts to the Natural, Cultural and Historical It is impacted by all 50-year, 100-year and Facilities 500-year are summarized in Tables 8-13 (Appendix 2) and events. Iti is also impacted by 10-year events of 2070, illustrated in Map series 140-203 (Appendix 3). Impacts to Intermediate-High, 2100, Intermediate-High and 2100, the identified Natural, Cultural and Historical Facilities are Intermediate-Low scenarios. discussed below. Battery Park & Marina: The park is located around the The point at which the asset shows impacts for each year marina and is generally a low area of the city, however, it and scenario is listed; more severe storms will also show slopes higher to the northwest. Consequenty, the depths impacts but are assumed since impacts are present in the of flooding have a wide range of depths in each scenario. lower intensity storms. The park has flood impacts in every scenario except Tidal Flooding impacts. It does get impacted for the 2100, Parks Intermediate-High, Tidal-Flooding scenario. Chapman Square Park: The park is located on 14th Street between Avenue C and Avenue D. It is on moderately high Bayside Park: The park is located adjacent to fringing land. It is impacted by all 500-year storm scenarios and the wetlands of Apalachicola Bay. As such, it is located on very 2100 Intermediate-High, 100-year storm scenario. low land and is impacted by all scenarios except the tidal scenarios. It is, however, impacted by the 2070 and 2100 Basketball Court: The park is located on 6th Street between Intermediate-High, Tidal Flooding scenarios. Avenue K and Avenue L. It is on high land. Iti is impacted by all 500-year storm scenarios and the 2100 Intermediate- Madison SquarelJustin B. Griffin Skate Park: The park High, 100-year storm scenario. is located adjacent to the City Hall complex on some of the highest land in Apalachicola. The park is impacted at Franklin Square: The park is located on 6th Street between the level of 2070 and 2100 Intermediate-High, 500-year Avenue K and Avenue L. It is on high land. The park is events. impacted by all 500-year storm scenarios. Dog Park: The park is located adjacent to the City Hall Apalachicola Ballfield: The park is located on moderately complex on some of the highest land in Apalachicola. high land. It is impacted by all 500-year storm scenarios. The park is impacted at the level of 2070 and 2100 Intermediate-High, 500-year events. Scipio Creek Boardwalk Trailhead: The park is located over wetlands that fringe the Apalachicola River. The area is impacted by all 100-year and 500-year scenarios. John Gorrie Museum State Park: The park is located on high land within Gorrie Square, one of the historic squares. St. Vincent National Wildlife Refuge (visitor center): The Iti is impacted at the level of 2070 and 2100 Intermediate- park is located on 5th Street, between Avenue E and High, 500-year events and 2100 Intermediate-Low, 500- Avenue F on relatively high land. It is impacted by all 500- year events. year storm scenarios. John Gorrie Museum State Park (Main Entrance): The park is located on high land within Gorrie Square, one of the historic squares. Iti is impacted at the level of 2070 and 2100 Intermediate-High, 500-year events and 2100 Intermediate-Low, 500-year events. - o o 00 2024 Vulnerability Assessment City of Apalachicola 39 Orman House Historic State Park (Main Entrance): The Historic and Cultural Assets park is located on a bluff above the Apalachicola River. The Historic and Cultural Assets include all local, state, The park is impacted at the level of 2070 and 2100 and federally owned properties. There is overlap between Intermediate-High, 500-year events. the affordable housing section, as these properties are locally owned and are on the State Master Site File list of Mayor Van Johnson Splash Pad/Playground: The park is historic properties. located at some of the highest land in Apalachicola. It is not impacted until the 2100 Intermediate-High, 500-year Observed Impact Notes by Asset scenario. The impacts for Conservation Lands, Parks, Shorelines, Surface Waters, and Wetlands are well documented in Lafayette Park/Fishing Pier: The park is located on a bluff the maps and tables. For the purposes of this report, they just above the fringing wetlands on Apalachicola Bay on will be considered as temporary impacts and will not be the south side of the city. The fishing pier goes from the regarded in the sensitivity assessment. park southward into the bay. The fishing pier is elevated variably eight feet above the wetlands and the bay water surface. As such, the fishing pier is impacted on the map by all scenarios. However, due to the height of the pier, iti is beyond the scope of this investigation. The park itself, being on high ground is not impacted until the 2100 Intermediate-High, 500-year scenario. Surface Waters The Surface Waters GIS Attribute Table lists two surface waters; Apalachicola Bay and the. Apalachicola River. These two assets are continuously flooded and are impacted by all scenarios. Shoreline The shoreline of the City of Apalachicola is located in the supratidal zone, which is flooded currently by alternating incomingloutgoing tidal action. The shoreline is impacted by almost all scenarios. Only two of the lowest impact scenarios (2023, No SLR, Tidal Flooding and 2040, Intermediate-Low, Tidal Flooding) showed an incomplete total impact to the shoreline. Impacts to shoreline are shown in Table 4.1F, below. Wetlands Wetlands occur at all elevations within the study area. The preponderance of wetlands occurs fringing the shoreline at the riverside and bayside, but some occur in the higher elevations due to collection of stormwater in closed depressions, ponding in swale impoundments, with generally very poorly drained soils. o a 00. 40 City of Apalachicola 2024 Vulnerability Assessment Map 143 Natural, Cultural & Historical Depth -2023 NSL 100 Year Re CITY of Apalachicola Natural, Cultural, and Historic Flood Depths Vulnerability Assessment Update 2023, No SLR, 100 year event 2024 RC tigy 10R CENTERI BOARDMALRIEAR GITYL LIMIT ROURASSAAeN 212211 2AD 20 wpo.sincnmspanctusea.dpstaspane PV - consemasen.ama.pseNwpp.enng MMUMARAOAURAN 29 Apalachicolal Flood Map Depths 0-5 5'.10 MADIEON son2 10'.1 15' VAN 240239238 237 u A 241 43 258257 50 5 254 259260 263 260247 266 265 ndst 26927 Q 271 72 294279278 Miles usuMAtdrEnNe 3 Map 143 represents a Low Risk Assessment (less than 25% Critical Assets Affected) within the Natural, Cultural & Historical Infrastructure Facilities Category for selected model run. do - :. PooA 2024 Vulnerability Assessment City of Apalachicola 41 Map 144 Natural, Cultural & Historical Depth - 2023 NSL 500 Year CITY of Apalachicola Natural, Cultural, and Historic Flood Depths Vulnerabiity Assessment Update 2023, No SLR, 500 yoar ovont RC 2024 CITYLIMIT TORG CENTERBOARDY MVRARAee BaN 212211 40 yo,sincuespala.sp2.dp.smapine consenalon.ands.Pasehsah.ep2.omng 31 AAN 2202 216 17 216207 Apalachicolal Flood Mapi Depths 0-5 01 3 5-10 MADYOON 0.36278 10-15 15-20 VAN $ 21 27 240233230237 236 235120 10: 241242 243 244 245 246 247 248 118 104 Fred ST Frec rey y 5 117 258257 256 255 3 252 249 116 Efis' Vari lett: 51 259260 261202 263 2 268267266265 n 260270 271 : 8A272 Miles O0elaanslod RBes 006f84 Map 144 represents a Medium Risk. Assessment (between a 25-50% Critical Assets Affected) within the Natural, Cultural & Historical Infrastructure Facilities Category for selected model run. : o e 00. 42 City of Apalachicola 2024 Vulnerability Assessment Map 169 Natural, Cultural & Historical Depth - 2100 Intlo 500 Year CITY of Apalachicola Natural, Cultural, and Historic Flood Depths Vulnerability Assessment Update 2100, Intermediate. Low, 500 yoar ovent RC 2024 CITYLIMIT TORCENTER DOARDWALK RA MsSeS BHR Rd DI m.UslvespNsA.suatpane 21221 20 ree conenalon.anas.pasanob.sepa.enro 99 MPH conservasion.ands.epaluchcola.sep23 16 3 Apalachicolal Flood Map Dapths 18 2167 55 69 64 56 0-5 2212222 224 5. 10 34 42 10. 15' SON soe 4 1493 24 3 36 1520 VAN 6 20-25' 30 38 121 127 129 a do 240239 238237 236 235 120 126 40 115 103 01 241242 243244 245 246 247 248 116 104 100 Fred Meyer 5E Frea Mayer 5I 117 258257 256255 254 116 06 249 vet 1 5 259200 261 262 263 9 113 103 GE, : Ce nus 269a70 - 0E aetn ouswsAgA-staO Map 169 represents a High Risk Assessment (between a 50-75% Critical Assets Affected) within the Natural, Cultural & Historical Infrastructure Facilities Category for selected model run. - : :o o 00. 2024 Vulnerability Assessment City of Apalachicola 43 Map 164 Natural, Cultural & Historical Depth - 2070 InHi 500 Year CITY of Apalachicola Natural, Cultural, and Historic Flood Depths Vulnerability. Assessment Update 2070, Intermediato High, 500 yoar ovent 2024 RC CITYLIMIT ORC RMMSAAYeS fRS AMAMVAST 212211 30 a V C 0 consevaswa.snas.spasonng APMS2 200 163 79 MMUMAERAMAON ivs 285 154 Apalachicola Flood Map Depths 220219 218 217 6 0 3 155 61 0-5 152 155 160 68 222 28 24 MPR u 5'- 10 134 OLC 1015 MDISON a DE ATT 124 132 136 15-20 VN SON 20'-25 35 121 27 129 700 237 236 735 120 28 119 103 10: 241242 4 246: 41 243 116 104 a leyet Frec Mey 5t 117 258257 256255 254 253 16 249 lest 15 9260 13 682 247: 305 254 135 41027: PALACHA AYIDEPARK 26627 4 à Miles MPMAAAUNAbNN GESA Map 164 represents an Extreme Risk Assessment (more than 75% Critical Assets Affected) within the Natural, Cultural & Historical Infrastructure Facilities Category for selected model run. : 00. oo 44 City of Apalachicola 2024 Vulnerability Assessment IMPACTS TO TRANSPORTATION FACILITIES Impacts to Evacuation Routes The attribute table for evacuation routes lists Highway 98 Critical assets within the transportation and evacuation as the sole evacuation route. Evacuation is to the east routes classification include airports and airport access across Apalachicola Bay or to the west towards Port St roads, bridges, major roadways, marinas, and evacuation Joe. Table 4.1P quantifies the impacts to Highway 98. routes. There are no bus terminals, ports, rail facilities or The maps identify the specific areas in which flooding is railroad bridges within the City limits. Those assets are anticipated with each scenario. addressed in the 2022 ARPC Regional VA. The flood impacts to the Transportation Facilities are Boat Ramps There are 4 boat ramps listed in the attribute table for summarized in Tables 14-19 (Appendix 2) and illustrated boat ramp assets for Apalachicola. Since boat ramps are in Map series 207-277 (Appendix 3). Impacts to the located near sea level, the boat ramps are impacted by identified Critical Infrastructure Facilities are discussed nearly all scenarios. below. Airports The point at which the asset shows impacts for each year Impacts to the Cleve Randolph airport are twofold. 1) and scenario is listed; more severe storms will also show Impacts to the runways, which are considered temporary impacts but are assumed since impacts are present in the and 2) Impacts to structures. The airport complex lower intensity storms. structures include the terminal building, the Emergency Operations Center, hangars, and various storage buildings. Bridges Impacts under 5'are considered low, 5'-10' are considered The study area has one bridge, the Apalachicola River severe and impacts 10'+ are considered high. High Bridge. The bridge approach at Apalachicola is an elevated impacts in this case could be catastrophic. embankment. The impacts shown an all scenarios are flooded up the side of the reinforced earth walls. All Marinas impacts shown in all scenarios, are considered temporary. All marinas are impacted by all storm surge events and to FDOT is responsible for both bridges and the causeway a lesser degree, all tidal events. It is assumed that boats east of the City. These impacts are not considered in this moored there should be relocated prior to the storm. Boats report. not relocated could cause impacts that are well offsite of the marina and cause a delay in resuming operation of Major Roadways roadways. The impacts of marinas are considered as a There are 51 roads listed in the attribute table for major an storm scenario. road assets. The impacts are listed in Table 15 (Appendix given any 2). Impacts to major roadways are quantified in linear feet and depth in this report. The impacts to major roadways are considered temporary in this report. Note: City personnel management who are responsible for clearing of the roadways have stated that roadways are expected to be clear of debris such as trees, limbs, etc. within a week of the subsidence for minor storms. For more major storms during which City personnel have been evacuated the cleanup could be impaired by time taken for personnel to return to duty, damage sustained by clean-up equipment and the availability of staging areas to store debris in the event that the county landfill has sustained storm impacts that preclude the reopening. :o ..o. pooA 2024 Vulnerability Assessment City of Apalachicola 45 Map 215 Transportation Series (Airports, Bridges, Evacuation Routes) Depths 2040 IntLo 50 Year CITY of Apalachicola Transportation Flood Depths Vulnerability, Assessment Update 2040, Intermediate Low, 50 year event 2024 CITYUMI Apalachicolal Flood! Map Daprs ApatRod.AEeN o a - bndpes apalacicoa aug23. statepane 5.1 10 Miles evacuaton. roures. apalacicola. sep20 stateplane 1015 CMS Map 215 represents a Low Risk Assessment (less than 25% Critical Assets Affected) within the Transportation Infrastruc- ture Facilities Category for selected model run. . ..0. SooA 46 City of Apalachicola 2024 Vulnerability Assessment Map 231 - Transportation Series Depths 2070 IntHi 100 Year CITY of Apalachicola Vulnerability Assessment Update Transportation Flood Depths 2070, Intermediate High, 100 year event 2024 CITYUMIT Apalachcolaf Flood Map Cephs MPOILRONSAaceN 0-5 - AAReS 59 5 MVAMUMMMAURASN Miles 5 BRsGpIwDA sont/ SRiA Map 231 represents a Medium Risk Assessment (between a 25-50% Critical Assets Affected) within the Transportation Infrastructure Facilities Category for selected model run. : .. - GooA 2024 Vulnerability Assessment City of Apalachicola 47 Map 227 Transportation Series Depths 2070 IntLo 500 CITY of Apalachicola Transportation Flood Depths Vulnerability Assessment Update 2070, Intermediate Low, 500 year event 2024 CTYAMT Apalchcdar lood Mipt Diptis - APsR:aSAstN 0-5 - wAwnsANe AARweS 10 5 15.20 Mies 20-25 00saauEnd eBNE asaas Map 227 represents a High Risk Assessment (between a 50-75% Critical Assets Affected) within the Transportation Infra- structure Facilities Category for selected model run. : :o. - PooA 48 City of Apalachicola 2024 Vulnerability Assessment Map 237 Transportation Series (Airports, Bridges, Evacuation Routes) Depths 2100 IntLo 500 Year CITY of Apalachicola Transportation! Flood Depths Vulnerability Assessment Update 2100, Intermediate Low, 500 year event 2024 CITYUMIT Apalachicola Fisodn Map Dipths ApeMURASdAccS on 5 - "MMSASwee 5.10 EUMSVYoLPEREno,tawpaw 0 15- 20 Maes 20 25 O0sMsRRE ture! SoMMIRK 038425. Map 237 represents an Extreme Risk Assessment (more than 75% Critical Assets Affected) within the Transportation Infrastructure Facilities Category for selected model run. : .0: GoOA 2024 Vulnerability Assessment City of Apalachicola 49 Prioritized Assets Table 66 (from Table series) Prioritized Assets by The City's assets projected to be impacted by flooding Location and Scenario are prioritized by location and scenario in Table 66 rang- ing from medium to extreme. They have been prioritized SCENARIO CRITICAL CRITICALASET Focus Risk ASSETCLASS TYPE Area Assessment by immediate need as they represent critical infrastra- Location structure assets. 2023_No-SLR_500- yr Wastewater Extreme Treatment Facilities 6 (1unit) Wastewater Lift High Stations 6 (546 units) Stormwater Extreme Treatment Facilities and 1,3 Pump: Stations (32 Outfalls) Drinking Water Extreme Facilities 6 (1unit) Communication Extreme Facilities 1,5 (2u units) Critical 20 units High Community andEmergency Facilities 2040_ IntLo_ 100-yr Critical Infrastructure Wastewater Extreme Treatment 6 Facilities (1unit) Stormwater Extreme Treatment Facilities and 1,3 Pump Stations (32 Outfalls) 2040_ IntLo_ 500-yr Critical Infrastructure Wastewater Extreme Treatment 6 Facilities (1 unit) Wastewater Lift Extreme Stations 6 (546 units) Stormwater Extreme Treatment Facilities and 1,3 Pump Stations (32 Outfalls) Drinkingl Water Extreme Facilities 6 (1unit) 0 ..0. ooA 50 City of Apalachicola 2024 Vulnerability Assessment Table 66 (from Table series) Prioritized Assets by Location and Scenario SCENARIO CRITICAL CRITICALASET Focus Risk ASSET CLASS TYPE Area Assessment SCENARIO CRITICAL CRITICAL ASET Focus Risk Location ASSET CLASS TYPE Area Assessment Communication Extreme Location Facilities 1,5 andEmergency (28 units) (2units) Facilities Critical 20L units High Natural, Historical and High Community Cultural, and Cultural Assets 1,5 Historical 49 andE Emergency Resources Facilities Critical Affordablel Public High 2100_ IntLo_ 10-yr 14.8 Community Housing 1,5 Stormwater High andE Emergency (28 units) Treatment Facilities Facilities and 1,3 2070_ IntLo_ 50-yr Pumps Stations Critical (32 Outfalls) Infrastructure 2100_ Intlo_ 50-yr 19.8 Stormwater Extreme Stormwater Extreme Treatment Treatment Facilities and 1,5 Facilities and 1,3 Pump: Stations Pump Stations (32 Outfalls) (32 Outfalls) 2070_ IntLo_ 100-yr 2100_ IntLo_ 100-yr 28.6 Critical Critical Infrastructure Infrastructure Wastewater Extreme Wastewater Extreme Treatment 6 Treatment 6 Facilities Facilities (1unit) (1unit) Stormwater Extreme Wastewater Lift Medium Treatment Stations 6 Facilities and 1,3 (546 units) Pump Stations Stormwater Extreme (32 Outfalls) Treatment 2070_ IntLo_ 500-yr Facilities and 1,3 Critical Pump Stations Infrastructure (32 Outfalls) Wastewater Extreme 2100_ IntLo_ 500-yr Treatment 6 Airports Facilities Cleve Randolph High (1unit) Airport( (970.8 6 Wastewater Lift Extreme acres) Stations 5 Weems Heliport Extreme (546 units) (0.23 acres) Stormwater Extreme Major Roadways Extreme Treatment Critical Facilities and 1,3 Infrastructure Pump Stations Wastewater Extreme (32 Outfalls) Treatment DrinkingV Water Extreme Facilities 6 Facilities 6 (1 unit) (1unit) Wastewater Lift Extreme Communication Extreme Stations 6 Facilities 1,5 (546 units) (2 units) Stormwater Extreme Critical 20 units Extreme Treatment Community Facilities and 1,3 andE Emergency Pump Stations Facilities (32 Outfalls) Critical Affordable Public High DrinkingWater Extreme Community Housing 6 - C ..0. RooA 2024 Vulnerability Assessment City of Apalachicola 51 Table 66 (from Table series) Prioritized Assets by Location and Scenario SCENARIO CRITICAL CRITICALASET Focus Risk SCENARIO CRITICAL CRITICAL. ASET Focus Risk ASSET CLASS TYPE Area Assessment ASSET CLASS TYPE Area Assessment Location Location (1 unit) Critical Affordablel Public High Communication Extreme Community Housing Facilities 1,3 andE Emergency (28 units) Facilities (2u units) Natural, Historical and High Critical 20 units Extreme Cultural, and CulturalA Assets Community 5 Historical 49 1,2 and Emergency Resources Facilities 2070 IntHi 10-yr Critical Affordable Public Extreme Critical Community Housing 5 Infrastructure andE Emergency (280 units) Stormwater High Facilities Treatment Natural, Historicala and High Facilities and 1,3 Cultural, and Cultural Assets Historical 49 1,2 Pump Stations Resources (32 Outfalls) 2040_ IntHi 100-yr 2070_ IntHi 50-yr Critical Critical Infrastructure Infrastructure Wastewater Extreme Wastewater Extreme Treatment Treatment 6 Facilities 6 Facilities (1unit) (1unit) Stormwater Extreme Stormwater Extreme Treatment Treatment Facilities and 6 Facilities and 1,3 Pump Stations Pump Stations (32 Outfalls) (32 Outfalls) 2040_ IntHi 500-yr 2070_ IntHiL 100-yr Critical Transportation Infrastructure andE Evacuation Wastewater Extreme Routes Treatment Major Roadways High Facilities Critical (1unit) Infrastructure Stormwater Extreme Wastewater Extreme Treatment Treatment 6 Facilities and Facilities Pump Stations (1unit) (32 Outfalls) Wastewaterl Lift Extreme Communication Extreme Stations 1,5 Facilities (546 units) (2units) Stormwater Extreme Treatment 2070_ IntHi 500-yr Facilities and 1,3 andE Transportation Evacuation Pump: Stations Routes (32 Outfalls) Airports Drinking Water Extreme Cleve Randolph High Facilities 6 Airport (970.8 (1unit) acres) Communication Extreme Weems Heliport Extreme Facilities 1,3 (0.23 acres) (2units) Major Extreme Critical 20 units High Roadways Community Critical andE Emergency Infrastructure Facilities - - :o. - GooA 52 City of Apalachicola 2024 Vulnerability Assessment Table 66 (from Table series) Prioritized Assets by Location and Scenario SCENARIO CRITICAL CRITICAL ASET Focus Risk SCENARIO CRITICAL CRITICAL ASET Focus Risk ASSET CLASS TYPE Area Assessment ASSET CLASS TYPE Area Assessment Location Location Wastewater Extreme Wastewater Extreme Treatment Treatment Facilities 6 Facilities (14 unit) (1 unit) Wastewater Lift Extreme Wastewater Lift High Stations 5 Stations (5464 units) (546 units) Stormwater Extreme Stormwater Extreme Treatment Treatment Facilities and 1,3 Facilities and Pump Stations Pump Stations (320 Outfalls) (32 Outfalls) DrinkingWater Extreme Communication Extreme Facilities 6 Facilities (1unit) (2units) Communication Extreme 2100_ IntHi 500-yr Facilities 1,3 Transportation (2units) andi Evacuation! Critical 20 units Extreme Routes Community Airports and Emergency Cleve Randolph Extreme Facilities Airport( (970.8 6 Critical Affordable Public Extreme acres) Community Housing 5 Weems Heliport 5 Extreme and Emergency (28 units) (0.23 acres) Facilities Major Roadways 5 Extreme Natural, Historicala and Extreme Critical Cultural, and CulturalA Assets 1,2 Infrastructure Historical 49 Wastewater Extreme Resources Treatment 6 2100_ IntHi_ 10-yr Facilities Critical (1unit) Infrastructure Wastewater Lift Extreme Stormwater Extreme Stations 6 Treatment (546 units) Facilities and 1,3 Stormwater Extreme Pump Stations Treatment (32 Outfalls) Facilities and 1,3 2100_JntHI50-yr Pump Stations Critical (32 Outfalls) Infrastructure DrinkingWater Extreme Wastewater Extreme Facilities 6 Treatment (1unit) 6 Facilities Communication Extreme (1unit) Facilities 1,3 Stormwater Extreme (2units) Treatment Critical 20u units Extreme Facilities and 1,3 Community Pump Stations andE Emergency (32 Outfalls) Facilities Communication Extreme Critical Affordable Public Extreme Facilities Community Housing 5 (2units) andE Emergency (28 units) 2100_ IntHi 100-yr Facilities Critical Natural, Historical and Extreme Infrastructure Cultural, and Cultural Assets Historical 49 Resources L : ..0. oo 2024 Vulnerability Assessment City of Apalachicola 53 Zoning Parcel Impacts In a public outreach meeting in which the project was C-4: Riverfront Commercial - The C-4 district is located on discussed, commissioners of the Apalachicola City low lying land on the northeast part of the city.. As such, it Commission requested that zoning lot impacts be included is impacted by most scenarios. The impacts by the storm with the project. Table 68 (Appendix 2) documents scenarios are shown in the table above and in the accom- impacts to zoning lots. panying maps. Zoning lot impacts are lots within the City of Apalachicola R-1: Single family Residential - The R-1 zoning district is that are impacted by the various scenarios that are broken located in two broad areas of the city. The first is on the down by Zoning designation. southeast side of the city. The second is in the central part of the city. The districts are very variable in elevation sO The zoning designations of the City of Apalachicola are: impacts are very much location dependent. The area on the southeast side is impacted by all scenarios, however, C-1: General Commercial; the tidal scenario impacts are in the lower marsh areas C-2: Neighborhood Commercial; that are platted as lots. The centrally located part of the C-3: Highway Commercial; district includes a low area that was once a creek. This C-4: Riverfront Commercial; area is easily discerned by looking at most scenarios. This R-1: Single family Residential; area is impacted by no tidal scenarios, but impacts for R-2: Multi-Family Residential; most storm scenarios can be seen starting at the 2040, R-3: Mobile Home Residential; Intermediate-Low, 50 year storm. The impacts by the storm R-4: Mixed Use Residential; scenarios are shown in the table above and in the accom- OR: Office Residential; panying maps. RF: Riverfront; RC: Research Conservation. R-2: Multi-Family Residential - The R-2 zoning district is north of Highway 98 on the west part of the city. The Lots impacted by the NOAA storm scenarios are shown in land gradually increases in height with distance from the the Table Series and illustrated in the accompanying map bayfront. The district is impacted by no tidal scenarios. The series. Discussion of zoning impacts follows. southern parts show more impacts than the northern parts due to elevation differences. The impacts by the storm C-1: General Commercial - The C-1 district is located in scenarios are shown in the table above and in the accom- the downtown area of Apalachicola. The district is gener- panying maps. ally moderately high, but parts are impacted by the 2100, Intermediate-High, Tidal scenario. The impacts by the R-3: Mobile Home Residential - The R-3 district is located storm scenarios are shown in the table above and in the north of the R-2 district in the west part of town. It is gen- accompanying maps. erally higher land. Iti is not impacted by any tidal scenarios. Iti increases in elevation with distance from the bayfront. C-2: Neighborhood Commercial - The C-2 zoning district The impacts by the storm scenarios are shown in the table is two small districts. One is located adjacent to Highway above and in the accompanying maps. 98 in the central part of the city. The other is located sur- rounded by R-1 in the central part of the city. Both areas R-4: Mixed Use Residential - The R-4 district is a small are on high land. No tidal scenarios impact either area. district located on higher land. The district is not impacted The impacts by the storm scenarios are shown in the table by tidal scenarios and is only impacted by the most severe above and in the accompanying maps. storms. The impacts by the storm scenarios are shown in the table above and in the accompanying maps. C-3: Highway Commercial - The C-3 district is located adjacent to Highway 98 on the west end of the city. The district is located on moderately high land. It is not impact- ed by any tidal scenario. The impacts by the storm scenar- ios are shown in the table above and in the accompanying maps. e - :0.o e o0. 54 City of Apalachicola 2024 Vulnerability Assessment OR: Office Residential - The OR district straddles Highway 98 for most of the city. Generally higher in elevation, there are some moderately high areas, as well. Impacted by no tidal scenarios, it is impacted by the most severe storms. The impacts by the storm scenarios are shown in Table 68 and in the accompanying maps. RF: Riverfront - The RF district is along the river on the northeastern shore. The land is low and impacted in all tid- al and storm scenarios. The impacts by the storm scenari- OS are shown in the table above and in the accompanying maps. RC: Research Conservation - The RC district is mostly along the river on the northern shore. Iti includes an area that slopes much higher in elevation to a bluff over the river. The land near the river is low and impacted in almost all tidal and storm scenarios. The bluff area, however is only impacted by the most severe storm scenarios. The impacts by the storm scenarios are shown in Table 68 and in the accompanying maps. :. .. GOOA 2024 Vulnerability Assessment City of Apalachicola 55 Table 68 Zoning Parcel Impacts - Depth R-3 R-4 OR RF RC- RC- RC SCENARIOS R-3 R-4 OR RF SF ACRES Depth Depth Depth Depth Depth 2023 No SLR 10-yr 0 None 0 None 0 None 115 0-10' 2,038,355.10 46.79 0-10' 2023 No-SLR_ 50-yr 0 None 0 None 0 None 132 5'-15' 2,348,910.60 53.92 0-10' 2023 No-SLR 100-yr None 0 None 8 0-5' 132 5'-15' 2,408,719.08 55.30 0-15' 2023 No-SLR 500-yr 269 0-5' 4 0-5' 87 0-10' 132 10'-20' 2,536,272.84 58.22 0-20' 2023 NOSLR Tidal 0 None 0 None 0 None 34 0-5' 1,858.49 0.04 None 2040 IntLo 10-yr 0 None 0 None 0 None 118 0-10' 2,105,636.26 48.34 0-10' 2040 IntLo 50-yr 0 None 0 None 0 None 132 0-15' 2,360,802.83 54.20 0-10' 2040_ _IntLo 100-yr 0 None 0 None 8 0-5' 132 5'-15' 2,413,916.53 55.42 0-15' 10'- 2040_Intlo.500-yr: 275 0-10' 4 0-5' 95 0-10' 132 10'-20' 2,545,624.46 58.44 20' 2040 IntLo Tidal 0 None 0 None 0 None 36 0-5' 2,281.63 0.05 None 2070 IntLo 10-yr 0 None 0 None 0 None 124 0-10' 2,186,799.37 50.20 0-10' 2070 IntLo 50-yr 0 None 0 None 0 None 132 10'-15' 2,379,292.53 54.62 0-10' 2070 IntLo 100-yr 0 None 0 None 10 0-5' 132 5'-15' 2,424,247.80 55.65 0-15' 2070 IntLo 500-yr 285 0-10' 8 0-5' 102 0-15' 132 10'-20' 2,563,811.35 58.86 0-20' 2070 IntLo Tidal 0 None 0 None 0 None 48 0-5' 6,193.00 0.14 None 2100 IntLo 10-yr 0 None 0 None 0 None 124 0-10' 2,245,545.45 51.55 0-10' 2100 IntLo 50-yr 0 None 0 None 0 None 132 5'-15' 2,393,488.92 54.95 0-10' 2100 IntLo_ 100-yr 0 None 0 None 11 0-10' 132 5'-15' 2,433,323.96 55.86 0-15' 2100 IntLo 500-yr 396 0-10' 13 0-5' 108 0-15' 132 10'-20' 2,585,623.30 59.36 0-20' 2100 IntLo Tidal 0 None 0 None 0 None 61 0-5' 62,015.55 1.42 0-5' R-3 R-4 OR RF RC- RC- RC SCENARIOS R-3 Depth R-4 Depth OR Depth RF Depth SF ACRES Depth 2040 IntHi_ 10-yr 0 None 0 None 0 None 124 0-10' 2,151,522.96 49.39 0-10' 2040 IntHi 50-yr 0 None 0 None 0 None 132 0-15' 2,371,268.38 54.44 0-15' ZONING LOT IMPACTS R-3 R-4 OR RF RC- RC- RC SCENARIOS R-3 R-4 OR RF SF ACRES Depth Depth Depth Depth Depth 2040 IntHi 100-yr 0 None 0 None 9 0-5' 132 5'-15' 2,418,803.75 55.53 0-15' 2040 IntHi_ 500-yr 281 0-10' 6 0-5' 99 0-15' 132 10'-20' 2,554,010.79 58.63 0-20' 2040 IntHi Tidal 0 None 0 None 0 None 40 0-5' 3,483.80 0.08 None 2070 IntHi 10-yr 0 None 0 None 0 None 125 0-10' 2,313,482.23 53.11 0-10' 2070 IntHi 50-yr 0 None 0 None 8 0-5' 132 5'-15' 2,413,030.25 55.40 0-15' 2070 IntHi_ 100-yr 0 None 0 None 16 0-10' 132 5'-15' 2,447,225.31 56.18 0-15' 2070 IntHi_ 500-yr 564 0-10' 20 0-5' 125 0-15' 132 15'-25' 2,630,085.20 60.38 0-20' 2070 IntHi Tidal 0 None 0 None 0 None 88 0-5' 1,055,161.85 24.22 0-5' 2100 IntHi 10-yr 0 None 0 None 5 0-5' 132 5'-15' 2,401,091.05 55.12 0-15' 2100 IntHi_ 50-yr 0 None 0 None 18 0-10' 132 5'-15' 2,453,296.65 56.32 0-15' 2100 IntHi_ 100-yr 112 0-5' 1 None 50 0-10' 132 10'-20' 2,492,643.34 57.22 0-20' 2100 IntHi 500-yr 735 0-10' 25 0-10 139 0-15' 132 15'-25' 2,651,511.58 60.87 0-25' 2100 IntHi_ Tidal 0 None 0 None 0 None 118 0-10' 2,092,101.32 48.03 0-10' C - - .0.o o 56 City of Apalachicola 2024 Vulnerability Assessment Map 336 - Zoning - 2023 No SLR 10-Yr Inundation CITY ofA Apalachicola City of Apalachicola Zoning Map Vulnerability Assessment Update 2023 No SLR 10 year event RC 2024 12211 219 93 93 202 41321 69 12021 2368 21222 3 Apalachicola. Flood Map Depths 130229 227 OR 0-5 E 124 136 5-10 1272 $3 23 25 131 137 234 222 126 30 138 R-2 21 127 129 40239 38 236 235 120 - Ruer 3 3 R-1 e 3 245 248 82 256 255 a OR - 6 DA ot 265 117 # 9279 25 5 Miles : :. oA 2024 Vulnerability Assessment City of Apalachicola 57 Map 337 Zoning - 2023 No SLR 50-Yr Inundation CITY of Apalachicola City ofA Apalachicola Zoning Map Vulnerability Assessment Update 2023 No SLR 50 year event RC 2024 12211 219 203 6937 202 113214 215 299 209 og 120219 218 217 20 C-2j08 22 Apalachicola Flood Map Depths 3437 0-5' 430229 228 227 a 2 e 5-10 136 40 48 OR 10'-1 15' 2122 233) 125 131 137 139 234 126 130 138 R:2 127 129 40239 238 237 236 Q 120 EE 3 - 242, 243 245 40 248 38 255 255 54 5 OR, N 3 MZAT 826 266, 265 a R 09219 271 RL 25 5 Miles :.. GooA 58 City of Apalachicola 2024 Vulnerability Assessment Map 338 - Zoning - 2023 No SLR 100-Yr Inundation CITY of Apalachicola City ofA Apalachicola Zoning Map Vulnerability Assessment Update 2023 No SLR 100 year event RC 2024 12211 5R 99 13214, 69 20219 4166 21222 Apalachicola Flood Map Depths 3 3 0-5 30229 228 227 5-10' - 2 136 OR 10'- 15' 3123 23 131 137 234 126 130 138 E R2 29 127 129 40239 238 237, 216 128 a 235 R-1 43 45 33 OR N 261 265 - - 2 o 27 25 o Miles - o .o. SooA 2024 Vulnerability Assessment City of Apalachicola 59 Map 339 - Zoning - 2023 No SLR 500-Yr Inundation CITY of Apalachicola City OfA Apalachicola Zoning Map Vulnerability, Assessment Update 2023 No SLR 500 year event RC 2024 10 12211 75R 249 1321 209 G2 a 94 2021 a 61 169 Apalachicola Flood Map Dépths 2 C-2,68 2 0-5 5-10 130229 135 OR 10'-15' 132 136 OR 15'- 20' 1272 233 25 31 137 39 234 122) 126 130 138 R-2 129 10239 238 237 236 20 C-A 2 1 e 03 01 243 245 4 1a 04 256 254 5. 51 16 OR 6 04 263 TLT bE I 271 Mies - C c0. - oo 60 City of Apalachicola 2024 Vulnerability Assessment Economic Impacts Table 67 (Appendix 2 - Tables) shows the economic impact of the various storm surge scenarios to structures in the City of Apalachicola. It should be noted that dollar values shown in the table are estimates and do not reflect local labor costs and should be adjusted for inflation to the cost of building materials. The table is arranged by storm scenario and shows losses in dollars, number of structures impacted, tax base impact in dollars and as a percentage, and number of households at risk of displacement. The table shows that, as anticipated, all costs and loss in- crease with storm severity. The lowest losses being those of tidal impacts and increasing with storm severity with the highest being those of a 500-year storm. The table was developed by High Tide Intelligence from USACE and insurance industry sources to be used as a baseline for anticipated economic impacts for future storm surge events. : . GoA 2024 Vulnerability Assessment City of Apalachicola 61 Table 67 Economic Impacts Aggregate Number of Aggregate Number of Aggregate Tax Households Sea Level Rise Scenario Economic Total Loss Tax Impact Impact at Risk of Loss Buildings Percent Displacement 2023, No-SLR, Tidal Flooding $1,246,972 31 $1,239 0.1 829 2023, No-SLR, 10-year event $6,005,377 58 $13,678 1.3 832 2023, No-SLR, 50-year event $14,934,652 104 $42,072 3.9 834 2023, No-SLR, 100-year $25,822,016 179 $91,065 8.4 866 event 2023, No-SLR, 500-year $84,110,861 629 $354,237 32.9 1088 event 2040, Int High, Tidal Flooding $1,308,630 31 $1,239 0.1 829 2040, Int High, 10-year event $8,232,613 75 $26,300 2.4 832 2040, Int High, 50-year event $19,074,486 127 $59,768 5.5 837 2040, Int High, 100-year $29,167,501 208 $110,310 10.2 885 event 2040, Int High, 500-year $95,852,637 727 $407,910 37.8 1132 event 2070, Int High, Tidal Flooding $1,776,456 32 $1,625 0.2 829 2070, Int High, 10-year event $12,973,568 97 $38,050 3.5 833 2070, Int High, 50-year event $27,022,081 185 $95,141 8.8 871 2070, Int High, 100-year $41,292,316 282 $154,408 14.3 933 event 2070, Int High, 500-year $137,651,438 1100 $609,042 56.5 1222 event 2100, Int High, Tidal Flooding $6,555,975 64 $15,672 1.5 832 2100, Int High, 10-year event $23,980,684 161 $77,209 7.2 860 2100, Int High, 50-year event $44,230,022 298 $166,294 15.4 941 2100, Int High, 100-year $61,590,035 411 $243,892 22.6 1007 event 2100, Int High, 500-year $202,501,071 1437 $830,675 77 1231 event 2040, Int Low, Tidal Flooding $1,271,328 31 $1,239 0.1 829 2040, Int Low, 10-year event $6,806,589 64 $15,672 1.5 832 2040, Int Low, 50-year event $16,958,304 117 $51,290 4.8 836 2040, Int Low, 100-year event $27,180,067 187 $97,816 9.1 873 2040, Int Low, 500-year event $89,849,638 681 $386,073 35.8 1104 2070, Int Low, Tidal Flooding $1,353,313 32 $1,625 0.2 829 2070, Int Low, 10-year event $9,151,781 76 $28,480 2.6 832 2070, Int Low, 50-year event $20,038,498 133 $61,916 5.7 839 :o - - : SooA 62 City of Apalachicola 2024 Vulnerability Assessment Map 340 - Economic Impacts - 2023 No SLR 10-Yr Inundation City of Apalachicola CITY of Apalachicola Economic Impact Vulnerability, Assessment Update 2023, NOSLR, 10-year event EER 2024 6 EREE - HB 1) comomdimpadResul.ys wapesIR.a.Oer - 4 195 98 A N USHwy9 98 278 0.5 1 cayolApalachicola,; 2025. Miles :o : GooA 2024 Vulnerability Assessment City of Apalachicola 63 Map 341 - Economic Impacts - 2023 No SLR 50-Yr Inundation City of Apalachicola CITY of Apalachicola Economic Impact Vulnerability. Assessment Update 2023, NOSLR, 50-year event 2024 1 184 la E SPIFr yffRd, HeN 6 G - ER 2 ecomomidimpadResuls.s - adapeSIR.mASe. A1 29 07 44 DE N USH ART Hwy/9B 80279 278 0.5 1 CayofApalachicola, 2025. Miles : - .0 GooA 64 City of Apalachicola 2024 Vulnerability Assessment Map 342 - Economic Impacts - 2023 No SLR 100-Yr Inundation City of Apalachicola CITY ofA Apalachicola Economic Impact Vulnerability/ Assessment Update 2023, NOSLR, 100-year event 87 a IG 2024 77 RA PPN EEEE d BIg HB A ecomomcmpadlesuliz.6 A saaesIA2.ar, A2 A 30 29 28 48 N USH Hwys 98 ant 2791278 0.5 1 CyolApal c hicola, 2025. Miles C 0. : - :o 2024 Vulnerability Assessment City of Apalachicola 65 Map 343 - Economic Impacts 2023 No SLR 500-Yr Inundation City of Apalachicola CITY ofA Apalachicola Economic Impact Vulnerability. Assessment Update 2023, NOSLR, 500-yeare event 2024 Rd, 1 46 E ecomomielimpadResul.s maapSIRA.SDYe, au 40239 238 237 236 8 8257 56 54 265 3 9270 274 N USI Hwy98 3 80279 278 0.5 1 CiyoA Apalachicola, 2025. Miles . .. GOA 66 City of Apalachicola 2024 Vulnerability Assessment Focus Area Analysis Task 4 - Sensitivity Analysis Description: The Grantee will perform the sensitivity analysis to measure the impact of flooding on assets and to apply the data from the exposure analysis to the inventory of critical assets created in the Exposure Analysis Task. The sensitivity analysis should include an evaluation of the impact of flood severity on each asset type and at each flood scenario and assign a risk level based on percentages of land area inundated and number of critical assets affected. Deliverables: The Grantee will provide the following: 4.1: A draft VA report that provides details on the findings of the exposure analysis and the sensitivity analysis, and includes visual presentation of the data via maps and tables, based on the statutory-required scenarios and standards; and 4.2: An initial list of critical and regionally significant assets that are impacted by flooding, prioritized by area or immediate need, specifying for each asset which flood scenario(s) it was impacted by. The list of critical and regionaly-signficant assets must be prioritized by area or immediate need and must identify which flood scenario(s) impacts each asset. .o : GOOA 2024 Vulnerability Assessment City of Apalachicola 67 Focus Area Identification Three of the six Focus Areas are at the lower elevation In 2017, the City considered that the the downtown com- areas of town. However, each Focus Area, ranked by mercial district could be considered a focus area for adap- vulnerability to storm surge flooding, has also been tation planning. Understandably, the downtown district was prioritized by the number and importance of the publicly- the area adjacent to the riverfront and susceptible to tidal owned assets contained within each area. A synopsis and surge flooding during storm events. of flood probabilities and effect upon assets is provided for each Focus Area. It should be noted that in a small Justification town, such as Apalachicola, a higher ranking should not The 2024 updated analysis identifies six separate focus be considered as less of a consideration when managing areas that contain critical assets important to the City. vulnerable assets. Apalachicola's updated Exposure Analysis Map and Table series provides an illustrative look at each storm scenario The 2024 updated analysis identifies six separate focus ar- and the potential impact to land area and assets. eas that contain critical assets important to the City. Each focus area, ranked by vulnerability to storm surge flooding, This data, along with elevation data, was used to establish has also been prioritized by the number and importance of the risk assessment ranking and used to update the focus the publicly-owned assets contained within each area. areas first identified in the 2017 Vulnerability Assessment. Assets that are contained within the Focus Areas drive the rankings. As all Focus Areas contain some assets such as Major Roads and Vacuum Lift Stations, these are of less Map 313 Focus Area Citywide CITY of Apalachicola City of Apalachicola Focus Area 1 Vulnerability Assessment Update Focus Areas Focus Area 2 2024 Focus Area 3 Focus Area 4 Focus/ Area 5 Focus Area 6 % ( Fod a4 FocusArea6 GocuAren? 3 - FocusAreas a5 a USHys 98 E N 0.5 1 CkydfApa alachicola, 2025 Miles 0 % 0 68 City of Apalachicola 2024 Vulnerability Assessment consideration in ranking the Focus Areas that other assets. Table 70 Ranking of Focus Areas by Vulnerability The City will have a plan to manage vacuum lift stations, regardless of which Focus Area is involved. The same Focus Area Priority Ranking applies to Major Roads and Stormwater Outfalls. 1 5 2 6 The Focus Areas are ranked from 1 to 6 in priority in the Table 70 (Appendix 2). Ajustification for their prioritization 3 2 is found within the discussion that follows impacts to 4 1 assets. 5 4 6 3 1: Focus Area #5 As a result of Focus Area #5 containing sO many of the City's assets, it ranks the highest. The area is impacted by major storm surge events. 2: Focus Area #6 As a result of Focus Are #6 containing 3 critical facilities, it also ranks highly. The area is impacted by major storm surge events. 3: Focus Area #2 Focus Area #2 contains assets that rank the area highly. The area is essentially tied with Focus Area #1. 4: Focus Area #1 Focus Area #1 contains assets that rank the area highly. The area is essentially tied with Focus Area #2. 5: Focus Area #4 Focus Area #4 contains 1 Historic and Cultural Asset and is ranked lower. As stated above the Vacuum Pump Station will be considered separately. 6: Focus Area #3 Even though the area is prone to storm surge, it contains no assets considered in this report. o ..0. GooA 2024 Vulnerability Assessment City of Apalachicola 69 FOCUS AREA 1 from past hurricanes makes this a particularly vulnerable Map 313 (Appendix 3) shows Focus Area 1. area. The area's vulnerability and number of critical assets Table 60 (Appendix 2) identifies assets and impacts within ranks important but not the most critical. Focus Area 1. Focus Area 1 (73.4 acres) is the lower elevation commer- Focus Area 1 Critical Assets: cial area located along the riverfront. The area is an Area . 2905.1 LF of major roads; of Special Flood Hazard and much of the riverfront is a rat- 60 vacuum sewage lift stations; ed velocity zone, which means iti is subject to direct wave 13 Stormwater outfalls; action. The area is projected to receive impacts from all Community Center: Harbormaster's House storm surge and tidal events due to the low elevation and Six Historic Structures: FR00288-Oyster Packing House; its location adjacent to the river. The area contains, Major FR00339-Harrison. and Raney Warehouse; FR00344-City Roads, Vacuum Lift Stations, Stormwater Outfalls, a Com- Hall; FR00643-Frankin County Jail; FR02434-239 Water munication Tower, a Community Center, and six Historical Street; FR02451-33 Commerce Street. and Cultural Assets. The topography, FEMA flood zones and repetitive flooding that has occured within this area Map 314 - Focus Area 1 CITY of Apalachicola City of Apalachicola Focus Areas Vulnerability, Assessment Update Sensitivity Assessment 2024 && - - 0 A C Focus Area 1 a 2 N a A SIZ AE) bitiu EL A DET 0.5 1 Miles Citly 2024 C o GooA 70 City of Apalachicola 2024 Vulnerability Assessment FOCUS AREA 1 ASSET IMPACTS Map 315 - Focus Area 1 - CCEF Impacts, NCH Assets Transporiation/fRoads CApe FocusAreas WranbiyA CryetApalchieols Assess sment - 10-year events impact major roads in an increasing per- FOCUSA tica Area AES N 2024 Upie Cutural, cal centage from 97.4% in a 2023, No-SLR scenario to 100% AssEts for 2100,_IntHi scenario in Focus Area #1. . FCUABRICCEFN Assets FocusAreal Hia atoricalar andoAr - All 50-year, 100-year and 500-year events impact 100% Foaushat of the major roads in Focus Area #1. . Tidal flooding impacts range from 0% to 5.1%, except 2100, IntHi which impacts 90.3% of major roads in Focus - - ET Area #1. Critical Infrastructure / Lift Stations COUNTY E 60 Lift Stations - E . 10-year events impact vacuum lift stations in an increas- ing %age from 48.3% in a 2023, No-SLR event to 73.3% in a 2100_ IntHi event in Focus Area #1. . 50-year events impact vacuum lift stations in an increas- - ing %age from 85% for a 2023, No-SLR event to 100% in Map 316 - Focus Area 1 - Critical Infrastructure a 2100 IntHi event in Focus Area #1. . 100-year events impact vacuum lift stations in an increas- CiyaApat ola Focus Areas crYotApatichicels Focu at showing N WherabayA Assess mentUpdate ing percentage from 98.3% for a 2023, No-SLR event to Assets 2024 100% in a 2100_ IntHi event in Focus Area #1. e Faoukral Feakesis Sexerunsutens . All 500-year events impact 100% of vacuum lift stations Foakaisewrpyeas FoamAral mastero ovtits in Focus Area #1. Foouhral conAst Sumasturranes StomastwrPelyinas . Tidal flooding impacts range from 0% in 2023, No-SLR to FoousAreat FocusArest 1WDterPoynes WaterPoirts 55% in a 2100_ IntHi event in Focus Area #1. à à Critical Infrastructure. / SW Outfalls 13 Outfalls . All 10-year, 50-year, 100-year, and 500-year events im- pact 100% of stormwater outfalls in Focus Area #1. All Tidal flooding impact 100% of stormwater outfalls in Focus Area #1. Critical Infrastructure / Communications GT Com Tower Map 317 - Focus Area 1 - Transportation No 10-year events impact the GT Com cell tower. 50-year, 100-year, and 500-year events impact the GT EKE Focus ea showin rez Wn cryetApalehicels erablity AseismantUpae Assets andE N 2024 Com cell tower. Foaskreat Matnas No Tidal events impact the GT Com cell tower. FocaArat asAreat 1BoaiRamps Evasution veal Bridges CCEF / Community Centers FoasAral . Harbormaster's House. The Harbormaster's House is elevated approximately 8' above grade to the lowest horizontal structural member and 10' above grade to the - - finished floor. The Depth Impact Tables will have to be con- sulted to deduct the proper footage to determine impacts. . All 10-year, 50-year, 100-year, and 500-year events im- pact the Harbormaster's House. See Note above. . No Tidal scenarios affect the Harbormaster's House except 2100_IntHLTidal. 25 les - o co 0. 0 2024 Vulnerability Assessment City of Apalachicola 71 NCH / Historical and Cultural Assets MSF FR00288-Oyster Packing House All 10-year, 50-year, 100-year, and 500-year events im- pact FR00288. . All Tidal scenarios impact FR0028 except 2023, No-SLR, Tidal. MSF FR00339-Harrison and Raney Warehouse . No 10-year scenarios except 2100 IntLo_1 10-yr, 2070_In- tHIL_10-yr, and 2100, IntHi, 10-yr impact FR00339. - All 50-year, 100-year, and 500-year events impact FR00339. - No Tidal scenarios affect FR00339. MSF FR00344-City Hall - No 10-year scenarios except 2100 IntLo_ 10-yr, 2070_In- tH_10-yr, and 2100_IntHi 10-yr impact FR00344. - AllI 50-year, 100-year, and 500-year events impact FR00344. . No Tidal scenarios affect FR00344. MSF FR00643-Franklin County Jail . No 10-year scenarios except 2070_IntHIL10-yr, and 2100_IntHi_1 10-yr impact MSF FR00643. . AllI 50-year, 100-year, and 500-year events impact FR00643. . No Tidal scenarios affect FR00643. MSF FR02434-239 Water Street . All 10-year, 50-year, 100-year, and 500-year events im- pact FR00288. . No Tidal scenarios except 2100 IntHi_ Tidal impact FRO2434. MSF FR02451-33 Commerce St . No 10-year scenarios except 2070_IntHIL10-yr: and 2100 IntHi, 10-yr affect MSF FRO2451. . All 50-year, 100-year, and 500-year events impact FR00643. . No Tidal scenarios affect FR02451. See Map series 313-318 (Appendix 3) for projected depths for assets in this area. o .0 GOoA 72 City of Apalachicola 2024 Vulnerability Assessment FOCUS AREA 2 Focus Area 2 Critical Assets: Map 318 (Appendix 3 Maps) shows prioritized Focus 3794.7 LF Roads Area 2. Table 61 (Appendix 2 - Tables) identifies assets 26 Vacuum Lift Stations within Focus Area 2. 2 Critical Community and Emergency Facilities 2 Natural, Cultural & Historical Assets Focus Are #2 (22.8 acres) is another low elevation com- mercial downtown area east of the riverfront and west of Focus Area 1. Iti is slightly higher in elevation than focus area #1 and contains Major Roads, Vacuum Lift Stations, a Community Center, a Local Government Facility, an Emergency Medical Health Facility, and two Historical and Cultural Assets. In addition, iti is the predominant commer- cial hub of the City. It is ranked #2 priority. Map 318 - Focus Area 2 Boundaries CITY of Apalachicola City of Apalachicola Focus Areas Vulnerability. Assessment Update Sensitivity Assessment 2024 & SITE 2 - Focus/ Area 2 2 - 1 - 3 a N ZATTTTET E E Z P 9BD Tthu DE DD1 T 0.5 1 Miles City pla 2024 a :. GoA 2024 Vulnerability Assessment City of Apalachicola 73 Map 319 - Area 2 - Historical, Cultural, CCEF Assets FOCUS AREA 2 ASSET IMPACTS CIyOIA Apala howin la 0 N Mnersnyks cryetApatachleal Assessmentupdane ( 2024 Transportation/Malor Roads ergen acilities RB a . 3794.7 LF 3 L C FacusAn? causAea2 sto cal dc wh 10-year events impact major roads in an increasing causka2 Hathc Carel Facilles a per- 2 FaMmsCwwwayaw centage from 10.7% in a 2023, No-SLR scenario to 36.6% Foaak? Localo Govemment Fasltes C 0 4 HOUBE for a 2100_ IntHi scenario in Focus Area #2. B0 . 0 events C 50-year impact major roads in an increasing 3 E from 27.5% 3 %age in a 2023, No-SLR scenario to 65.1% 2 0 0 for a 2100 scenario Focus Area USVNE IntHi in #2. 3 2 20 . events 00 100-year impact major roads in an increasing 0 0 3 - 39.3% 2 from in a 2023, No-SLR scenario to 96.0% a %age 0 2 8 08 for scenario in 2 a 2100_IntHi Focus Area #2. 2 2 2 . events - 0 500-year roads in an / 0 impact major increasing 0 2 2 from 97.1% in a No-SLR scenario 2 %age 2023, to 100% for 0 C 0 a 2100 IntHi scenario in Focus Area #2. > 2> Co a 22 X A 23 0 . 23 4 1 2 Tidal flooding impacts of major roads range from 0% for a 2023, No-SLR event to 13.4% for 2100 IntHi in Focus Map 320 - Area 2 - Critical Infrastructure Assets Area #2. X7 47X crryetApalacNiela y pal N WMAURAN Infrastructure/WWTP and Lift Stations : shosing ucture - 2024 a ssEts . - a 26 Vacuum Lift Stations S D . Fesakna? s - Focah?s 5 3 Foaaka2s Sumarpoyina events impact lift stations in - 10-year an increasing %age FakmZSawAsuws a osAea2 0 from in Sesrtinss 0% a 2023, No-SLR scenario to 57.7% for a 2100_ FoousAa2 Waterp Pohnts C 0 FOMAmWMePayna IntHi scenario in Focus Area #2. B 2 2 . events 08 lift stations in an 0 50-year impact increasing %age 3 from 34.6% scenario a in a 2023, No-SLR to 73.1% a - for 2 2 0 2100_I IntHi scenario in Focus Area #2. 5 2 8 - 2 events stations 0 lift in an 0 100-year impact increasing C 0 30 A from 57.7% in No-SLR a scenario %age 2023, to 92.3% 08 0 04 a for a 2100_IntHi scenario in Focus Area #2. 2 - All events 100% the stations 0 500-year impact of lift in 0 - 2 0R Area 2 Focus 0 #2. 0 0 . 0 No Tidal scenarios affect Lift Stations in Focus Area #2 Cox 2 a 80 2 - 37 S 3 X 35 a 2 Critical Community and Emergency Facilities Map 321 - Area 2. - Transportation Assets Community Centers: Apalachicola Community Center . 10-year events do not affect Apalachicola Community ea osin Focus Areas 0 WhentiyAssessm cryotApatichiel mentUpd dala N E 9 Center except 2100_ IntLo, 2070_ IntHi, and 2100_ IntHi. Aasts 2024 a See 0 Note above. All 50-year, 100-year, and 500-year 2 0 2 - events impact the Center. R Apalachicola Community See 0 Note I FOCsN Aa? above. 2 - 0 0 FOCUSA Aaz Br aridges . No Tidal scenarios affect Apalachicola Community Cen- Bo Fooskmzfamtint FoakazVapRosa ter. 0 0 3 2 0 0 B 0 2 0 0 2 . 08 08 0 0A a 2 0 C 0 B 0 C 0 B C 57 - 22 A 20 - A 2 A 6A :o :. GOoA 74 City of Apalachicola 2024 Vulnerability Assessment Local Government Facilities: Franklin County Courthouse 10-year events do not impact Franklin County Court- house. . 50-year events do not impact Franklin County Court- house except 2070, Int-Hi and 2100 Int-Hi. . All 100-year, and 500-year events impact the Franklin County Courthouse. . No Tidal scenarios affect Franklin County Courthouse. Emergency Medical Health Facilities Tallahassee Orthopedics and Physical Therapy (TOSPT) - No 10-year, 50-year or 100-year events impact TOSPT. . All 500-year events impact TOSPT. - No Tidal scenarios affect TOSPT. Natural, Cultural, and Historical Resources/Historica and Cultural Assets MSF FR00066 Raney House . No 10-year scenarios affect Raney House. . No 50-year scenarios affect Raney House except 2100_ IntHi. 100-year scenarios that affect Raney House are 2070, IntHi and 2100, IntHi. . All 500-year scenarios affect Raney House. . No Tidal scenarios affect FR00066. MSF FR00274 US Post Office and Customs House . No 10-year scenarios affect US Post Office and Customs House. . No 50-year scenarios affect US Post Office and Customs House except 2100 IntHi. . 100-year scenarios that affect US Post Office and Cus- toms House are 2070, IntHi and 2100, IntHi. . All 500-year scenarios affect US Post Office and Cus- toms House. . No Tidal scenarios affect FR00274. See Map series 313 through 331 (Appendix 3 - Maps) for projected depths for assets in this area. C .0. oo 2024 Vulnerability Assessment City of Apalachicola 75 FOCUS AREA 3 Focus Area 3 Critical Assets: Map 322 (Appendix 3- Maps) shows Focus Area 3. Table 1890.1 LF Major Roads 62 (Appendix 2 - Tables) identifies assets within Focus 9 Lift Stations Area 3. 7 Outfalls Focus Area #3 (34.9 acres) is the low elevation area along Bay Avenue, south of the sharp increase in elevation to the north of Bay Avenue. The area is entirely residential and subject to coastal flooding. Although there are several lift stations and outfalls that work to drain stormwater from the other basins in the City the area is prioritized low because it does not contain many public assets. Map 322 - Focus Area 3 Boundaries CITY of Apalachicola City of Apalachicola Focus Areas Vulnerability. Assessment Update Sensitivity Assessment 2024 S A % & a ay - - - E 3 FocusArea 3 09 & 3 * N Focus Area 3 SZAITATITTETN I - Dy a bithu IUHL IA Em 0.5 1 Miles CityofA pa alachicola, 2024 .0. GooA 76 City of Apalachicola 2024 Vulnerability Assessment Map 323 - Focus Area 3 Assets FOCUS AREA 3 ASSET IMPACTS XX 7X3 2 2 2 -. 5 Transportation/Major Roads chyofAp 1ssess 0 2 Mhe cryotApilachleol ty Asses Update Focus ow 2 8 2 0 - 1890.1 LF 3 08 2 B9 a 2024 C 0 2 events a 09 10-year roads in an 0 89 impact major increasing per- C 2 0 2 2 2 08 2 0 2 o centage from 26.2% in a 2023, No-SLR scenario to 63.2% 2 0 2 C 2 2 2 2 8 for 2100_IntHi scenario in Focus Area #3. 2. 0 0 2 2 0 2 B 0 - 50-year events impact major roads in an increasing à 0 2 %age from 57.7% in a 2023, No- B 0 3 SLR scenario to 71.1% for 2100 IntHi scenario in Focus 0 a & akas Foaskass Seseriasutensa 2 2 2 Foakmsenetras Area #3. 0 - 2 2 a o FooisAresas FoaaA a Stumateronts Stomaster Pohnts - 100-year events impact major roads in an increasing 2 2 2 Foaskreas SumsPayne %age from 63.7% in a 2023, No-SLR scenario to 79.9% B0 2 2 FonAmaswari FocusAress WatarPeyineas - FocusAveas Tarapotifon for 2100_IntHi scenario in Focus Area #3. S 2 - 500-year events impact 100% of the major roads in Fo- 2 - 3 cus Area #3. N . Tidal flooding affects no major roads except 2100_ IntHi, 0.25 Ssues Tidal in Focus Area #3. Critical Infrastructure. / Lift Stations 9 Lift Stations . 10-year events impact vacuum lift stations in an increas- ing percentage from 44.4% in a 2023, No-SLR scenario to 77.8% for 2100 IntHi scenario in Focus Area #3. . 50-year events impact vacuum lift stations in an increas- ing %age from 66.7 % in a 2023, No-SLR scenario to 88.9% for 2100_ IntHi scenario in Focus Area #3. . 100-year events impact vacuum lift stations in an increas- ing percentage from 77.8% in a 2023, No-SLR scenario to 100% for 2100_IntHi scenario in Focus Area #3. - 500-year events impact 100% of the vacuum lift stations in Focus Area #3. . Tidal flooding affects no major roads except 2100 IntHi, Tidal, which impacts 44.4% of vacuum lift stations in Focus Area #3. Critical Infrastructure / SW Outfalls - 7 Outfalls Synopsis of Impacts: - 10-year events impact stormwater outfalls in an increas- ing %age from 57.1% in a 2023, No-SLR scenario to 100% for 2100_ IntHi scenario in Focus Area #3. - 50-year events impact stormwater outfalls in an increas- ing %age from 85.7 % in a 2023, No-SLR scenario to 100% for 2100_ IntHi scenario in Focus Area #3. All 100-year and 500-year events impact 100% of the stormwater outfalls in Focus Area #3. . Tidal flooding affects no major roads except 2070 IntHi (28.6%) and 2100_IntHi (57,1%) of stormwater outfalls in Focus Area #3. C .. GooA 2024 Vulnerability Assessment City of Apalachicola 77 FOCUS AREA 4 special consideration and has been parceled out in the Map 324 (Appendix 3 - Maps) shows prioritized Focus analysis below. The area will receive a low ranking, but the Area 4. Table 63 (Appendix 2 - Tables) identifies assets PS1 Sewage Pump Station will be considered separately. within Focus Area 4. Focus Area 4 Critical Assets: Focus Area #4 (55.3 acres) is the area of the relict creek . 10,830.0 LF Major Roads bed that is roughly between Avenue B and Avenue M 49 Lift Stations and 9th Street and Market Street. This area is significant 1 Historical Resource: FR002617 because it is subject to nuisance flooding mainly due to haphazard filling of some areas that cause unfilled areas to flood. The area contains Major Roads, Vacuum Lift Sta- tions, and one Historical and Cultural Asset. A: special note of consideration is that mapped as a vacuum lift station is the Vacuum Pump Station, located at the intersection of Avenue F and 9th Street. The facility transports all of the sewerage effluent to the WWTP. This facility is worthy of Map 324 - Focus Area 4 Boundaries CITY of Apalachicola City of Apalachicola Focus Areas Vulnerability Assessment Update Sensitivity Assessment 2024 & - - F a EF ini Focus Area 4 & - N TIT LE BEE B 6 1P E hithur BL DTI 0.5 1 Miles CaydApalachi 2024 : GooA 78 City of Apalachicola 2024 Vulnerability Assessment Map 325 - Focus Area 4 Assets FOCUS AREA 4 ASSET IMPACTS TransportationMajor Roads CayctAsakcihF Focus Areas MnyAa-auya CryetApieNieel - 10,830.0 LF Fsus AA des S 2024 10-year events impact major roads in an increasing SS Critica latrastructure %age from 3.9% in a 2023 No-SLR event to 64.3% in a & Foaus FOasA FOGuSA Areat Area4 eweruA werPolyines Sutons 2100_ IntHi event in Focus Area #4. o FoanA FoousAreats Area4 StumaatwrPoyinas omastern Poinss - 50-year events impact stormwater outfalls in an increas- FOasN FoasA Avea4 Nea W Vatarn Watern Pohs Polyines ing %age from 11.6% in a 2023_No-SLR event to 100% in FOcusA FORSN Avea4 veas MajorRoais Evacation Rouas a 2100_IntHi event in Focus Area #4. . 100-year events impact major roads in an increasing %age from 73.2% in a 2023_NOSR event to 100% for a 2100_ IntHi event in Focus Area #4. - All 500-year events impact 100% of the major roads in Focus Area #4. N . Tidal flooding affects no major roads except 2100 IntHi, which affects 4.3% of major roads in Focus Area #4. Critical Infrastructure / Lift Stations . 49 Lift Stations . 10-year events impact vacuum lift stations in an increas- ing %age from 2.0% in a 2023, No-SLR scenario to 61.2% for 2100_ IntHi scenario in Focus Area #4. . 50-year events impact vacuum lift stations in an increas- ing %age from 6.1 % in a 2023, No-SLR scenario to 93.9% for 2100 IntHi scenario in Focus Area #4. . 100-year events impact vacuum lift stations in an increas- ing %age from 69.4% in a 2023, No-SLR scenario to 100% for 2100_IntHi scenario in Focus Area #4. . 500-year events impact 100% of the vacuum lift stations in Focus Area #4. . Tidal flooding affects no major roads except 2100_ IntHi, Tidal, which impacts 2.0% of vacuum lift stations in Focus Area #4. PS1 Sewage Pump Station . No 10-year surge events impact PS1 Sewage Pump Station. - No 50-year events impact PS1 Sewage Pump Station except 2070, Int-Hi and 2100_IntHi. . All 100-year and 500-year surge events impact PS1 Sewage Pump Station. Natural, Cultural and Historical Assets MSF FR02617-47. Ave F No 10-year events affect FRO2617. No 50-year events affect FRO2617 except 2100_IntHi. No 100-year events affect FRO2617 except 2070_IntHi and 2100_ Int_Hi. All 500-year events effect FRO2617. No Tidal flooding events affect FR02617. Map (from map series) shows Focus Area 4. Table from table series) identifies assets from Focus Area 4. ..o a GooA 2024 Vulnerability Assessment City of Apalachicola 79 FOCUS AREA 5 Focus Area 5 Critical Assets Map 326 (Appendix 3 - Maps) shows prioritized Focus 88,620.7 LF Major Roads Area 5. Table 64 (Appendix 2 Tables) identifies assets Weems Heliport within Focus Area 5. 402 Lift Stations 12 Outfalls Focus Area 5 (829.1 acres) is the largest area and com- prises a mix of both residential and commercial property. It is also the highest in elevation and contains the most critical assets. The area contains Major Roads, al hospi- tal heliport, Vacuum Lift Stations, Stormwater Outfalls, a Communication Facility, Public Housing, a Community Center, an Emergency Medical Service Facility/Hospital, six government facilities, the Fire Station, the Law Enforce- ment Facility, four other Health Care Facilities besides the hospital, 2 schools, and 40 Historical and Cultural Assets. The Focus Area will rank very high. Map 325 Focus Area 5 Boundaries CITY ofA Apalachicola City of Apalachicola Focus Areas Vulnerability, Assessment Update Sensitivity Assessment 2024 % C a fo C FocusA Area 5 R a Focus Aréa Focus Area 5- 2 N a AD - 0.5 1 Miles ChyolApalach chico ola, 2024 < - ..0. :00 80 City of Apalachicola 2024 Vulnerability Assessment Map 329 - Focus Area 5 Transportation Assets FOCUS AREA 5 ASSET IMPACTS crryetApatachisal TransportationMajor Roads Chye! chi lce ola reas WirenbiyA yAssesmertUpdae s Aress howing 2024 - 88,620.7 LF tes . 10-year events impact major roads in an increasing - roaskus %age from 0.03% in a 2023 No-SLR event to 2.5% in a 6 5 FoasksAipons FOOsA reas EaastonRon 2100 IntHi event in Focus Area #5. a - 6 FoskeswprRass - . 50-year events impact stormwater outfalls in an increas- 6 2 - ing percentage from 1.4% in a 2023_No-SLR event to 14.9% in a 2100_IntHi event in Focus Area #5. . 100-year events impact major roads in an increasing %age from 3.0% in a 2023 NOSLR event to 29.2% for a 2100 IntHi event in Focus Area #5. - 500-year events impact major roads in an increasing N %age from 50.7% in a 2023_NOSLR event to 100% for a 2100_IntHi event in Focus Area #5. - There are no Tidal impacts for any events except 2100_ IntHi, which has a 0.03% of roads affected. Map 328 - Focus Area 5 Critical Infrastructure Assets Transporatiom/Atrports CityelA Mny cryetApatchieols BnyA Weems Heliport howin 2024 ssessmertupdate . 10-year, 50-year, and 100-year event have no impacts on Weems Heliport. - . 6 All 500-year events impact Weems Heliport, except - - 2023_ NOSLR and 2040 IntLo. > < 4 9 . No Tidal scenarios affect Weems Heliport. Critical Infrastructure. / Lift Stations . 402 Lift Stations . All 10-year events affect 0.25% of lift stations in Focus Fonaks Area #5. a FakusSeAsww Fooakass Seseri Marhokes . 50-year events impact vacuum lift stations in an increas- N FoahtaSSewrihs FahussUwwwe ing %age from 0.8 % in a 2023, No-SLR scenario to 1.2% Faksss aMmssymwwoaN semustrpons for 2100_IntHi scenario in Focus Area #5. eMaMusswwwwwwa FoasAasy waer Poris . 100-year events impact vacuum lift stations in an increas- iles FOAAUSwAERra ing %age from 2.7% in a 2023, No-SLR scenario to 12.7% Map 327 - Area 5 Historical, Cultural, CCEF Assets for 2100 IntHi scenario in Focus Area #5. . 500-year events impact vacuum lift stations in an increas- CarethecNn Focus WrerbiyA cryetApatcical ssessr Update ing %age from 63.2% in a 2023, No-SLR scenario to 100% tortea us ea 2024 for 2100_ IntHi scenario in Focus Area #5. rginsy' Critical Facies and . Most Tidal scenarios have no impact on vacuum lift o 6T - stations, except 2100_ IntHi impacts 0.3% of vacuum lift stations in Focus Area #5. : a Co roauskas . FoaisArasH Hsbrie andourthasats - FOaSN a5Afordable PVicHaaig FeasAasFs Sufens N FomwusLssGnemReNt fa acles FoausAas Commnty Certar COSAEaS Schocls nwwsManCfaNa onwwswwthnwran .5 liles FOCUSAaSHpUs FCOSNESE Emerpercyw ede ao es :0. SoA 2024 Vulnerability Assessment City of Apalachicola 81 Critical Infrastructure / SW Outfalls CCEF/ Emergency Medical Service Facilities . 12 Outfalls George E. Weems Memorial Hospital All 10-year events affect 41.7% of stormwater outfalls in No 10-year, 50-year, or 100-year events impact George Focus Area #5. E. Weems Memorial Hospital. . 50-year events impact stormwater outfalls in an increas- The 500-year storm surge events that impact George E. ing %age from 58.3% in a 2023, No-SLR scenario to Weems Memorial Hospital are the 2070_IntHi and 2100_ 83.3% for 2100_IntHi scenario in Focus Area #5. Int Hi. - All 100-year events affect 83.3% of stormwater outfalls in . No Tidal events impact George E. Weems Memorial Focus Area #5. Hospital. . All 500-year events affect 100% of stormwater outfalls in Focus Area #5. CCEF/ Local Government Facilities - Most Tidal scenarios have no impact on stormwater out- Apalachicola Muncipal Library falls, except 2100_ IntLo impacts 0.2%, 2070_ IntHi impacts . No 10-year, 50-year, or 100-year events impact Apala- 0.5%, and 2100 IntHi impacts 1.2% of stormwater outfalls chicola Municipal Library. in Focus Area #5. All 500-year events impact Apalachicola Municipal Library except 2023_ NOSLR, and 2040_ IntLo. Critical infrastructure/Communications Facilities No Tidal events impact Apalachicola Municipal Library. GT Com Land - No 10-year events impact GT Com Land. St. Vincent National Wildlife Refuge . No 50-year events impact GT Com Land. . No 10-year, 50-year, or 100-year events impact St Vin- No 100-year events impact GT Com Land. cents National Wildlife Refuge. . All 500-year events impact GT Com Land. . All 500-year events impact St Vincents National Wildlife . No Tidal scenarios impact GT Com Land. Refuge. . No Tidal events impact St Vincents National Wildlife CCEF/Affordable Public Housing Refuge. 12.28 Acres . 10-year events impact Affordable Public Housing acreage Fort Coombs Armory in an increasing percentage from 0% in a 2023, No-SLR . No 10-year, 50-year, or 100-year events impact the scenario to 5.7% for 2100_ IntHi scenario in Focus Area Armory. #4. . All 500-year events impact the. Armory. . 50-year events impact Affordable Public Housing acreage . No Tidal events impact the Armory. in an increasing %age from 1.1% in a 2023, No-SLR sce- nario to 1.9% for 2100 IntHi scenario in Focus Area #5. Florida Department of Agriculture . 100-year events impact Affordable Public Housing No 10-year, 50-year, or 100-year events impact the De- acreage in an increasing percentage from 2.4% in a 2023_ partment of Agriculture Shellfish Center. NOSLR event to 3.9% for a 2100_IntHi event in Focus All 500-year events impact the Department of Agriculture Area #5. Shellfish Center. . 500-year events impact Affordable Public Housing acre- No Tidal events impact the Department of Agriculture age in an increasing percentage from 49.3% in a 2023 Shellfish Center. NOSLR event to 100% for a 2100_ IntHi event in Focus Area #5. DET 1 CO, A. 3RD BN 124TH IN . No Tidal events impact Affordable Public Housing. No 10-year, 50-year, or 100-year events impact DET 1 CO A: 3RD BN 124TH IN. CCEF/ Community Centers All 500-year events impact DET 1 CO A 3RD BN 124TH Holy Family Senior Center IN. . No 10-year, 50-year, or 100-year events impact Holy . No Tidal events impact DET 1 CO A 3RD BN 124TH IN. Family Senior Center. . No 500-year events impact Holy Family Senior Center, except 2100_IntHi. . No Tidal events impact Holy Family Senior Center. ( .o. - ooA 82 City of Apalachicola 2024 Vulnerability Assessment Apalachicola City Hall George Weems Memorial Hospital . No 10-year, 50-year, or 100-year events impact Apala- No 10-year, 50-year, or 100-year events impact George chicola City Hall. E. Weems Memorial Hospital. - The 500-year storm surge events that affect Apalachicola . The 500-year storm surge events that impact George E. City Hall are the 2070_ IntHi and 2100_ IntHi events. Weems Memorial Hospital are the 2070_IntHi and 2100_ . No Tidal events impact Apalachicola City Hall. Int Hi. . No Tidal events impact George E. Weems Memorial CCEF/ Fire Stations Hospital. Apalachicola Volunteer Fire Department No 10-year, 50-year, or 100-year events impact Apala- CCEF/ Hospitals chicola Volunteer Fire Department. George Weems Memorial Hospital The 500-year storm surge events that affect Apalachicola No 10-year, 50-year, or 100-year events impact George Volunteer Fire Department is the 2100_ IntHi event. E. Weems Memorial Hospital. No Tidal events impact Apalachicola Volunteer Fire De- The 500-year storm surge events that impact George E. partment. Weems Memorial Hospital are the 2070_IntHi and 2100_ Int Hi. CCEF/ Health Care Facilities No Tidal events impact George E. Weems Memorial Sacred Heart Health Care Hospital. Synopsis of Impacts: . No 10-year or 50-year scenarios impact Sacred Heart CCEF/ Law Enforcement Facilities Health Care. Apalachicola Police Department Headquarters . 100-year scenarios that impact Sacred Heart Health No 10-year, 50-year, or 100-year events impact Apala- Care are the 2100_IntLo, 2070_IntHi, and the 2100_IntHi chicola Police Department Headquarters. events. . The 500-year storm surge events that affect Apalachicola . All 500-year scenarios 500-year scenarios impact Sacred Police Department Headquarters is the 2100 IntHi event. Heart Health Care. No Tidal events impact Apalachicola Police Department . No Tidal events impact Sacred Heart Health Care. Headquarters. Buy Rite Drugs CCEF/ Schools . No 10-year scenarios impact Buy Rite Drugs. Bay Area Charter School . The 50-year scenarios that impact Buy Rite Drugs are . No 10-year, 50-year, or 100-year events impact Bay Area the 2070_ IntHi and 2100_ IntHi events. Charter School. . All 100-year and 500-year scenarios impact Buy-Rite All 500-year events impact Bay Area Charter School. Drugs. No Tidal events impact Bay Area Charter School. . No Tidal events impact Buy-Rite Drugs. First Baptist Christian School CVS Drugs . No 10-year, 50-year, or 100-year events impact Bay Area . No 10-year or 50-year scenarios impact CVS Drugs. Charter School. . 100-year events that impact CVS Drugs are the 2100_ In- . All 500-year events impact except 2023 NOSLR and tLo and 2100_IntHi scenarios. 2040_ IntLo. . All 500-year scenarios 500-year scenarios impact CVS . No Tidal events impact First Baptist Christian School. Drugs. . No Tidal events impact CVS Drugs. Cardiology and Internal Medicine . No 10-year, 50-year, or 100-year scenarios impact Cardi- ology and Internal Medicine. . 500-year scenarios that impact Cardiology and Internal Medicine are the 2070_IntLo, 2100_IntLo, 2070_IntHi, and 2100_IntHi events. . No Tidal events impact Cardiology and Internal Medicine. - :o :o. 00 2024 Vulnerability Assessment City of Apalachicola 83 Natural, Cultural Resources/ Historical and Cultural FRO0246 CHAPMAN HIGH SCHOOL AUDITORIUM Assets No 10-year, 50-year, or 100-year events impact FRO246. FR00396 Orman, Thomas House . The 500-year events that impact FRO246 are the 2070_ . No 10-year, 50-year, or 100-year events impact IntHi and 2100 Int Hi. FRO0396. No Tidal events impact FRO246. The 500-year events that impact FR00396 are the 2070_ IntHi and the 2100_IntHi. No Tidal events impact FR00249 FORT COOMBS FR00396. No 10-year, 50-year, or 100-year events impact FR00249. FR01263 MULE BARN All 500-year events impact FR00249. No 10-year, 50-year, or 100-year events impact . No Tidal events impact FR00249. FRO1263. The 500-year events that impact FRO1263 are the 2070_ FR02851 127. AVENUE E IntHi and the 2100_IntHi. . No 10-year, 50-year, or 100-year events impact . No Tidal events impact FR01263. FR02851. The 500-year events that impact FR02851are the 2070_ FR00065 JOHN GORRIE MUSEUM intLo, 2100 IntLo, 2070_ IntHi, and 2100_IntHi. No 10-year, 50-year, or 100-year events impact . No Tidal events impact FR02851. FR00065. - The 500-year events that impact FR00065 are the 2100_ FR02502 309-311 11TH STREET IntLo, 2070_IntHi, and 2100_IntHi. Synopsis of Impacts: No Tidal events impact FR00065. . No 10-year, 50-year, or 100-year events impact FRO2502. FRO1264 SERVANTS QUARTERS The 500-year events that impact FR02502 are the 2070_ No 10-year, 50-year, or 100-year events impact intLo, 2100_ IntLo, 2070_ IntHi, and 2100_IntHi. FRO1264. . No Tidal events impact FRO2502. The 500-year events that impact FR01264 are the 2070_ IntHi and the 2100_ IntHi. FR02503 308-310 11TH STREET . No Tidal events impact FRO1264. No 10-year, 50-year, or 100-year events impact FR02503. FR01281 WEEMS MEMORIAL HOSPITAL . The 500-year events that impact FRO2503 are the 2070_ . No 10-year, 50-year, or 100-year events impact intLo, 2100_IntLo, 2070_ IntHi, and 2100_IntHi. FRO1281. No Tidal events impact FR02503. . The 500-year events that impact FRO1281 are the 2070_ IntHi and 2100 Int Hi. FR02504 303-305 11TH STREET . No Tidal events impact FR01281. . No 10-year, 50-year, or 100-year events impact FRO2504. FR00958 HOLY FAMILY, SCHOOL . The 500-year events that impact FRO2504 are the 2070_ - No 10-year, 50-year, or 100-year events impact intLo, 2100_IntLo, 2070_IntHi, and 2100_IntHi. FR00958. . No Tidal events impact FR02504. The 500-year events that impact FR00958 are the 2100_ IntHi. FR02505 304-306 11TH STREET . No Tidal events impact FR00958. . No 10-year, 50-year, or 100-year events impact FRO2505. FR00230 CITY PUMPING STATION - All 500-year events impact FRO2505. . No 10-year, 50-year, or 100-year events impact . No Tidal events impact FR02505. FRO0230. . All 500-year events impact FR00230. FRO2506 299-301 11TH STREET No Tidal events impact FR00230. . No 10-year, 50-year, or 100-year events impact FRO2506. . All 500-year events impact FRO 2506. . No Tidal events impact FRO2506. - - 0 84 City of Apalachicola 2024 Vulnerability Assessment FR02507, 298-300 11THSTREET FR02535 141-143 14TH ST . No 10-year, 50-year, or 100-year events impact No 10-year, 50-year, or 100-year events impact FR02507. FRO2535. . All 500-year events impact FR02507 except the 2023_ . The 500-year events that impact FRO2535 are the 2070_ NOSLR scenario. IntHi and the 2100_IntHi. . No Tidal events impact FRO2507. . No Tidal events impact FRO2535. FR2508 293-295 11TH STREET FRO2536 152-154 14TH ST . No 10-year, 50-year, or 100-year events impact . No 10-year, 50-year, or 100-year events impact FRO2508. FRO2536. AlI 500-year events impact FRO2508. . The 500-year events that impact FRO2536 is the 2100_ . No Tidal events impact FRO2508. IntHi. . No Tidal events impact FR02536. FR02509 292-294 11TH STREET . No 10-year, 50-year, or 100-year events impact FR02537 148 14THST FRO2509. . No 10-year, 50-year, or 100-year events impact . AlI 500-year events impact FRO2509. FRO2537. No Tidal events impact FRO2509. . The 500-year events that impact FRO2537 are the 2070_ IntHi and the 2100_IntHi. . FRO2510 276 11TH ST . No Tidal events impact FRO2537. . No 10-year, 50-year, or 100-year events impact FR02510. FR02538 142-144 14TH ST . All 500-year events impact FR25100. . No 10-year, 50-year, or 100-year events impact . No Tidal events impact FR02510. FRO2538. . The 500-year events that impact FR02538 is the 2100_ FRO2511 263 11THST IntHi. . No 10-year, 50-year, or 100-year events impact FRO2511. . No Tidal events impact FRO2538. . AII 500-year events impact FRO2511. . No Tidal events impact FRO2511. FR02547 145-147 15TH ST . No 10-year, 50-year, or 100-year events impact FR02512 266 11TH ST FRO2547. - No 10-year, 50-year, or 100-year events impact . The 500-year events that impact FR02547 are the 2100_ FRO2512. IntLo, 2070_ IntHi, and the 2100 IntHi scenarios. . All 500-year events impact FR02512. . No Tidal events impact FRO2547. . No Tidal events impact FR02512. FR02549 151-153 15TH ST FR02533 153 14TH ST . No 10-year, 50-year, or 100-year events impact - No 10-year, 50-year, or 100-year events impact FRO2549. FR02533. . The 500-year events that impact FRO2549 are the 2070_ . The 500-year events that impact FRO2533 are the 2070_ IntHi and the 2100_IntHi scenarios. IntHi and the 2100_IntHi. No Tidal events impact FR02549. . No Tidal events impact FR02533. FRO2551 155-157 15TH ST FR02534 147-149 14THST . No 10-year, 50-year, or 100-year events impact - No 10-year, 50-year, or 100-year events impact FR02551. FRO2534. . The 500-year events that impact FRO2551 are the 2070_ The 500-year events that impact FR02534 are the 2070_ IntLo, 2100_IntLo, 2070_IntHi, and 2100_IntHi. IntHi and the 2100_ IntHi. No Tidal events impact FR02551. No Tidal events impact FR02534. : SooA 2024 Vulnerability Assessment City of Apalachicola 85 FR02552 153-155 16TH ST FRO2420 275 12TH ST - No 10-year, 50-year, or 100-year events impact . No 10-year, 50-year, or 100-year events impact FRO2552. FRO2420. - The 500-year events that impact FR02552 are the 2100_ The 500-year events that impact FRO2420 are the 2100_ IntLo, 2070_ IntHi, and 2100_IntHi. Int Lo, 2070_IntHi, and the 2100_I IntHi scenarios. - No Tidal events impact FRO2552. . No Tidal events impact FRO2420. FR02553 147-149 16TH ST FRO2421 267-269 12TH ST No 10-year, 50-year, or 100-year events impact No 10-year, 50-year, or 100-year events impact FRO2553. FRO2421. . The 500-year events that impact FRO2553 are the 2100_ The 500-year events that impact FRO2421 are the IntLo, 2070_IntHi, and 2100_IntHi. 2070_IntLo, 2100_IntLo, 2070_IntHi, and the 2100_ IntHi . No Tidal events impact FR02553. scenarios. . No Tidal events impact FR02421. FR02554 141-143 16TH. ST . No 10-year, 50-year, or 100-year events impact FR02467 222 6TH ST FRO2554. . No 10-year, 50-year, or 100-year events impact . All 500-year events impact FRO2554 except the 2023_ FRO2467. NOSLR scenario. . The 500-year events that impact FR02467 are the . No Tidal events impact FR02554. 2070_ IntLo, 2100_IntLo, 2070_IntHi, and the 2100_IntHi scenarios. FR02606 VAN JOHNSON COMMUNITY SERVICE . No Tidal events impact FRO2467. COMPLEX No 10-year, 50-year, or 100-year events impact FRO2606. The 500-year events that impact FRO2606 is the 2100_ IntHi. . No Tidal events impact FRO2606. FR02417 309-311 12TH ST . No 10-year, 50-year, or 100-year events impact FRO2417. . The 500-year events that impact FR02417 is the 2100_ IntHi scenario. No Tidal events impact FR02417. FR02418 299-301 12THST . No 10-year, 50-year, or 100-year events impact FRO2418. The 500-year events that impact FR02418 are the 2070_ IntHi and 2100_ IntHi scenarios. . No Tidal events impact FR02418. FR02419 293-295 12THST . No 10-year, 50-year, or 100-year events impact FRO2419. . The 500-year events that impact FR02419 are the 2070_ IntHi and 2100_ IntHi scenarios. No Tidal events impact FR02419. a 0 86 City of Apalachicola 2024 Vulnerability Assessment FOCUS AREA 6 Focus Area 6 Critical Assets Map 330 (Appendix 3 - Maps) shows prioritized Focus Wastewater Treatment Facility Area 6. Table 65 (Appendix 2 - Tables) identifies assets Water Treatment Plan within Focus Area 6. Focus Area 6 is a 985.7 acre parcel west of the City that houses the City's two main critical utility assets: the waste- water treatment plant and the City drinking water facility. Map 330 - Focus Area 6 Boundaries CITY of Apalachicola City of Apalachicola Focus Areas Vulnerability. Assessment Update Sensitivity Assessment 2024 Focus/ Area 6 0 a 2 - S - - - - - - FocusAreaf 6 % - - - - - - N 09 - - 5 - :8 % - * a E u Ss E F1 T 0.75 1.5 Miles CayafA Apalachicola, 2024 < :. GoA 2024 Vulnerability Assessment City of Apalachicola 87 Map 331 - Focus Area 6 Infrastructure Assets FOCUS AREA 6 ASSET IMPACTS ChyatApule achicolaF oc as MAn cryetApalachiela Update Transporationm/Arports cu he andEVAs ow ute 2024 Cleve Randolph Airport ABSES cal ucD ure . 10-year events do not affect Cleve Randolph Airport except 2100_IntHi impacts vegetated areas of the airport complex. * All 50-year storm events impact vegetated areas of the l airport complex. - - All 100-year storm events impact vegetated areas of the - airport complex. - All 500-year storm events have major impacts on Cleve Randolph Airport. . No Tidal scenarios affect Cleve Randolph Airport. N F FoosNus Apalacy aseas Pume. esimert Susona dtsaA WIP upabeata Jies? 2023 Infrastructure/Wastewater Treatment Facilities and Lift PAKALS SAPANLAAA palichiccla sureplune Stations 0.5 liles -yenu atidics sonselgn Apalachicola Wastewater Treatment Facility . No 10-year events impact Apalachicola Wastewater Treatment Facility except the 2100_IntLo and 2070_IntHi scenarios have some flooding of south side vegetation. The 2100_ IntHi scenario has floodwaters against south side of southwest tank. - The 50-year events 2023_NOSLR, 2040_IntLo, and 2070_IntLo have some flooding of south side vegetation. 50-year events 2100_ IntLo and 2040 IntHi have floodwa- ters against south side of southwest tank. 50-year event 2070_IntHi has flooding of southwest tank. 50-year 2100_ Int Hi has major flooding of south 1/2 of WWTP site. - The 100-year events 2023_ NOSLR, 2040_IntLo, 2070_ IntLo, 2040_IntHi causes flooding of the southwest tank. 2100_IntLo and 2070 IntHi causes major flooding of south side of WWTP site. A 2100_ IntHi event causes major flooding of southern 3/4 of WWTP site. - All 500-year events produce major impacts on Apalachic- ola Wastewater Treatment Facility. - No Tidal scenarios affect Apalachicola Wastewater Treat- ment Facility. Infrastructure/Driking Water Facilities Apalachicola Water Treatment Facility - No 10-year, 50-year, or 100-year scenarios impact the Apalachicola Water Treatment Facility. These 500-year scenarios impact the Apalachicola Water Treatment Facility 2070_IntLo, 2100_IntLo, 2040_IntHi, 2070_IntHi, and 2100 IntHi. No Tidal scenarios affect Apalachicola Water Treatment Facility. - : 00. 88 City of Apalachicola 2024 Vulnerability Assessment Adaptation Planning Overview Adaptation planning is a series of steps a community takes "limited development" areas within local government to become more resilient to the impacts of sea level rise. planning documents. A wide range of planning tools may be involved, leading to adecision to avoid development in Apalachicola, like most small Florida coastal communities, areas subject to moderate to high risk. Regulatory tools must work with a limited personnel and budget constraints may include the designation or zoning of lands for limited to coordinate hazard mitigation planning. Often unforeseen development or non-habitable uses. An avoid strategy may infrastructure emergencies arise during storm events and include land acquisition or restriction tools such as aland unexpected flooding can occur in unexpected areas. In trust, or the transfer of development potential to areas with short, no manner of long term planning can account for the low or no risk due to sea level rise. unexpected. UPDATED ADAPTATION STRATEGIES Listed below are the four main categories of adaptation The City's original 2017 Vulnerability Analysis outlined a strategies a community may use to adapt to storm surge. suggestion that included incorporating the City's downtown commercial district, particularly near the waterfront, as an Protection Adaptation Action Area. See Map Focus Area 1. Strategies that involve "hard" and soft" structurally defensive measures to mitigate impacts of rising seas in The implementation of an Adaptation Action Area within order to decrease vulnerability while allowing structures Apalachicola's C-1, C-4 and RF district would allow the and infrastructure to remain unaltered. Two examples are City to gradually plan for adaptation to current and future shoreline armoring and beach renourishment. Protection sea level rise and other potential impacts. strategies may be targeted for areas of a community that are location-dependent and cannot be significantly altered The four strategies (protection, accommodation, or relocated, such as downtown centers, areas of historical retreat and avoidance) could be modified to provide an significance, or waterdependent uses. avenue for the City to address the four major impacts of floodingconcern. Accommodation Strategies that do not act as a barrier, but rather alter the Protection strategies may be appropriate for the design through measures such as elevation or stormwater downtown areas that are location-dependent and cannot improvements, to allow the structure of infrastructure be significantly altered or relocated, such as historical system to stay intact. Rather than preventing flooding or resources, or water- dependent uses. Protection could inundation, these strategies aim to reduce potential risks. include shoreline armoring that is either natural or man- made. Examples include: living shorelines, tide gates and Managed Retreat saltwater intrusion barriers. Vulnerable esources such Strategies that involve the actual removal of existing as the Historic Middlebrook Building and Harrison Raney development, their possible relocation to other areas, Building would benefit from the flood-protection barriers andlor the prevention of future development in high-risk methods such as Tiger Dams which are intended to protect areas. Retreat strategies usually involve the acquisition against up to three feet of storm flooding. Protection of vulnerable land for public ownership, but may include can also refer to the infrastructure within the floodprone other strategies such as transfer of development rights, areas within the City that can be affected by storm surge purchase of development right, rolling and conservation or sea level rise. Stormwater outfalls, water utilities, easements. communication lines, etc. Avoid involves ensuring development does not take place in areas subject to coastal hazards associated with sea level rise or where the risk is low at present but will increase over time. This may involve identifying future C : oo 2024 Vulnerability Assessment City of Apalachicola 89 Accommodation strategies aim to reduce potential INFRASTRUCTURE PROTECTION risks rather than seeking to prevent flooding or inundation In addition to the Adaptation Action Area identification, entirely. Examples include: the flood proofing of (Focus Area Map Series) the City has identified focus Area nonresidential structures, vertical elevation of structures; 5 as a priority because of the vulnerable infrastructure using structural fill to raise grade elevations; limit located within this area that should be protected. Table 65 development in projected hazard zones; planting salt water (Appendix 2 Tables) identifies important infrastructure tolerant plant species. If a critical facility in a high risk area including the wastewater treatment facility, stormwater requires substantial upgrades, it might be cost-effective in outfalls, drinking water facility and several critical terms of hazard avoidance to relocate the facility. community and emergency facilities. Managed Retreat or Relocation strategies may Ar more indepth analysis and community outreach effort involve the transition of vulnerable lands from private to is expected in coming months as the City prepares to public ownership, but may also include a combination conduct a Adaptation Action Plan. other strategies such as transfer of development rights (TDRs), purchase of development rights and conservation easements. Examples include infrastructure relocation/removal; and, transfer of development rights to upland sending areas that are characterized by lower vulnerabilities to coastal hazards. Avoidance strategies may involve identifying opportunities for future conservation or low density development areas within local government planning documents. A wide range of planning tools may be identified, facilitating a local decision to limit development in areas subject to moderate to high risk. Regulatory tools may include the designation of lands for low density or passive uses. An avoidance strategy may include land acquisition or tools such as a land trusts, zoning codes, and overlay zones. :. ..0. GOOA 90 City of Apalachicola 2024 Vulnerability Assessment - € 0. : - 0