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Home My WebLink AboutPresentation_Environmental Advisory Committee_5/14/2025Village of Tequesta Vulnerability Assessment May 14, 2025Marjorie G. Craig, PEAdvisory CommitteeEnvironmental Presentation Outline and community resilience.” processes, land use decisions, interactions among natural assets largely due to complex harm/ damage to exposed “The potential for loss of or NOAA Definition of vulnerability: Next StepsApproach & MethodologyOverviewFundingProject Motivation o Increased Storm Intensitylevel Rise & -Sea Project Motivation: disaster strengthintensified natural level rise and of flooding due to sea Increased probability o inches per year), on 0.4 –inches (0.3 12 -projected to be 10the U.S. coastline is next 30 years along Sea level rise over the Project Motivation: program-florida-nthttps://floridadep.gov/rcp/resilieFDEP Resilient Florida Site o implement projects for vulnerabilities, as well as analyze and plan for includes funding assistance to The Resilient Florida Program o and shoresour inland waterways, coastlines Enhances our efforts to protect o resilienceto Florida’s coastal and inland Ensures a coordinated approach o Florida Senate Bill 1954 Funding: Through the Resilient Florida Initiative Vulnerability Assessmentdata gathered for the $50,000 for improvement of funding in the amount of Amendment to increase ▪Vulnerability Assessment FDEP to conduct a in grant funding through originally received $95,000 The Village of Tequesta ▪ Funding: Through the Resilient Florida Initiative Regionally/Culturally significant structures▪Electric supply▪Water treatment plant▪Critical infrastructure:▪Increasing frequency/intensity of major storms▪Sea level rise (SLR)▪Threats:▪Priority: Protecting critical infrastructure▪for future resiliency projectsquality data will support grant applications -Gathering high▪comprehensive view of flood risk in TequestaSynthesis of multiple data types/sources allows for a ▪inundation model developmentFDEP requires prescriptive –$95,000 FDEP grant ▪ Overview Development/implementation of adaptation plan6.solutions to reduce flood risk–Peril of flood compliance 5.Reports, maps, tables–Final vulnerability assessment 4.Sensitivity analysis▪Exposure analysis▪Draft vulnerability assessment3.Incorporate data from other projects/consultants▪▪Schools, railways, libraries▪Contribution: ID data gaps▪scenariosGIS metadata synthesis summarizes which infrastructure at most risk in different ▪evapotranspiration datacurrent and future hydrologic, land use, and –Flood scenarios ▪Topography▪Inventory of critical/regionally significant assets▪Data acquisition2.FDEP grant approval1. Approach & Methodology Meeting #2Outreach Public Sensitivity AnalysisExposure AnalysisSignificant AssetsCritical/Regionally ReportAssessment Vulnerability Finalize PlanAdaptation Preliminary Develop AreasIdentify Focus AnalysisPerform DataBackground Acquire Meeting #1Outreach Public MeetingKickoff Critical/Regionally ResourcesHistorical Cultural, and Natural, Facilities Emergency Community and Critical InfrastructureCritical Routes& Evacuation Transportation Significant Assets Types of Inundation Modeling & Analysis Inland modeling/analysis▪based flood mapping-GIS▪based) modeling-Rain (precipitation▪Storm surge modeling▪Tidal flooding (sunny day flooding)▪Sea level rise (SLR) inundation modeling▪ Modeling approach)based -(riskSeverity Rating Contribution: Consistency with current flood zone map Stormyr -High 100Intermediate Predictions: 2070 Stormyr -High 100Intermediate Predictions: 2040 yr Storm-100Conditions: Existing Stillwater Elevation Depth•DepthMean Higher High Water •Mandatory flood insurance•yr Storm (1% chance)-100•Coastal Analysis High 5 Medium3 Low 1 Exposure Analysis 65432 1 high 2070 conditions–intermediate year storm event under -6. 500high 2040 conditions–intermediate year storm event under -5. 500conditionsyear storm event under existing -4. 500high 2070 conditions–intermediate year storm event under -3. 100high 2040 conditions–intermediate year storm event under -2. 100conditionsyear storm event under existing -1. 100 induced flooding-Rainfall Exposure Analysis 54321 projections for 2070 conditionshigh SLR -under intermediateyear storm surge flooding -5. 100projections for 2040 conditionshigh SLR -under intermediateyear storm surge flooding -4. 100projections for 2070 conditionslow SLR -under intermediateyear storm surge flooding -3. 100projections for 2040 conditionslow SLR -under intermediateyear storm surge flooding -2. 100under existing conditionsyear storm surge flooding -1. 100 Storm Surge Flooding Sensitivity Analysis 65432 1 conditionshigh 2070 –intermediate year storm event under -6. 500conditionshigh 2040 –intermediate year storm event under -5. 500existing conditionsyear storm event under -4. 500conditionshigh 2070 –intermediate year storm event under -3. 100conditionshigh 2040 –intermediate year storm event under -2. 100existing conditionsyear storm event under -1. 100 Rainfall induced flooding Exposure level results for critical assets: YRRainfall Event -500YR Rainfall Event -100 Rainfall Induced Flooding Sensitivity 54321 projections for 2070 conditionshigh SLR -under intermediateyear storm surge flooding -5. 100projections for 2040 conditionshigh SLR -under intermediateyear storm surge flooding -4. 100projections for 2070 conditionslow SLR -under intermediateyear storm surge flooding -3. 100projections for 2040 conditionslow SLR -under intermediateyear storm surge flooding -2. 100under existing conditionsyear storm surge flooding -1. 100 Storm Surge Flooding Analysis Exposure level results for critical assets: 100Storm SurgeYR - Focus Areas Focus Areas)etcdowntown area (swales, Stormwater conveyance in the ▪Environmental Control District)Lift stations (Loxahatchee River ▪generators Village hall and public safety building ▪flooding 1 and Village roads subject to -US▪More resilient water treatment plant ▪ Elevate Generators BldgPublic Safety Village HallRec Center approved, 75% federalHMGP funding •$450KCosts: $535K and •submersion riskPublic safety: 2.2 feet •submersion riskVillage Hall: 1.4 feet •submersion riskRec center: 1.1 feet •100 rainfall event Dover Ditch Stormwater Improvement Management Resiliency in Water Supply Resilient improvements coordinates supports and Village stationsmodify lift Elevate or flooding17 wet wells wastewater owns River District Loxahatchee Lift StationsWastewater Future Applications solutions?How can we collaborate on regional ▪What are their vulnerabilities?▪governmentsPartnering with neighboring ▪legislative support at 50% can apply for regional –LRPI ▪criteriaat 50% funding under certain available –Resilient Florida grants ▪community protectionFuture grants/funding for ▪ General Coastal Community Recommendations to )bioengineered solutionsConstructed flood control measures (flood walls, revetments, ▪Dune restoration, waterside plantings, sand scraping▪risk areas-Relocation of structures in high▪(FEMA standard)yr flood elevation -Elevating critical facilities 1 ft. above 500▪Maintaining stormwater features (ponds, structures, swales)▪Reducing impervious surfaces in new construction projects▪Preservation of floodplains (zoning)▪Compact community design▪Help Mitigate Climate Change Goals Tequesta Critical Assets Inventory (arcgis.com)Assessment Vulnerability of Tequesta the Village to access Click here Questions?funding sourcesto improvements and various through programmatic approach Ensure fiscal responsibility critical infrastructurePromote safety and reliability of conditionscurrent and future environmental Improve Village resiliency for 