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HomeMy WebLinkAboutSupplemental Information Received at Meeting FEMA PowerPointFEMA Flood Risk Review Meeting CCSF U.S. Congress established the NFIP with the passage of the National Flood Insurance Act of 1968: i FEMA produces Flood Insurance Rate Maps 2 Communities adopt and enforce a floodplain management ordinance to reduce flood risk to new and existing development in high risk flood zones 3 Federal government makes flood insurance available to property owners in participating communities ;5 FEMA Open Pacific Coast Study Risk MAP 5/8/2017 FEMA Flood Risk Review Meeting CCSF What is a FEMA Flood Insurance Rate Map (FIRM)? r- l 5/8/2017 Open Pacific Coast Study 2 FEMA Flood Risk Review Meeting CCSF Two Companion Large -Scale Efforts: • Open Pacific Coast (OPC) Study San Francisco Bay Area Coastal (BAC) Study Re -study flood risk . Re -map the elevation along the open coast and inland extent of and inland bays of all wave- induced coastal California coastal flooding counties www.r9coastal.org 9 FEMA Phase 2 Southern California Coast 9 FEMA S RiskMAP Phase 1 Northern 8 Central California Coast ri Risk~ 5/8/2017 Open Pacific Coast Study 3 FEMA Flood Risk Review Meeting CCSF 5/8/2017 Open Pacific Coast Study 4 Orange • unty Flood Mapping Timeline Kick-0R Mestmg Flood Risk Review Meeting Preliminary FIRM Meeting Resilience Workshop R R l m Outreach Timeline Provide Work Map Develop Community Implement Study Data Process � �� Map Production Timeline Appeal Penn ro June 9 - Sep 7 R �7 ` Lefer of Final catamaraho Effective Maps FEMA 1 NM"P 5/8/2017 Open Pacific Coast Study 4 FEMA Flood Risk Review Meeting CCSF Components of the total water level (TWL) • Tide: 5 -7 ft • Surge (atmospheric pressure, wind setup, El Nino sea level effects): 1-4 ft • Wave setup + runup: 10 -50 ft Overt opping Total Water W Level (TWL) ' Wave Runup�� Wave Setup FEMA Ri*MAP B '= • Discovery - Community Input • Areas of Concern • Structures Assessment I 9 FEMA 5/8/2017 Open Pacific Coast Study 5 FEMA Flood Risk Review Meeting CCSF California Coastal Mapping Program • Ocean Protection Council • NOAA • USACE • USGS `5 FEMA „ RiskMAP • 88 Orange County transects • Locations determined by: • Shoreline characteristics Shoreline orientation Exposure to storms • Nearshore bathymetry • Wave climate • Land use and development $ FEMA u RiskMAP 5/8/2017 Open Pacific Coast Study 6 FEMA Flood Risk Review Meeting CCSF • Zone VE: Inundated by 1- percent annual chance (100 - year) flood with additional wave hazards: • Runup • Overtopping • Zone AE: Inundated by 1- percent annual chance flood • Zone X (shaded): Inundated by 0.2- percent annual chance (500 -year) flood Zones VE and AE carry mandatory flood insurance purchase requirements 9 FEMA Risk~ When a structure is in a high risk flood zone and has a federally backed mortgage, the structure owner is required to purchase flood insurance • NFIP or private insurance provider • NFIP annual premiums vary by: • Flood zone • Residential vs. non - residential use • Age of the structure • Height of lowest floor vs. I% chance flood elevation 0 FloodSmart.gov t=' $ FEMA RiskMAP 5/8/2017 Open Pacific Coast Study 7 FEMA Flood Risk Review Meeting CCSF V FEMA z Risk MAP 8 FEMA Open Pacific Coast Study = 1 %Annual Chance Flood Changes Since Last FIRM _ Increase (increase in SFHA type or BFE) _ Decrease (decrease in SFHA type or BFE) www. r9coastal.org Risk~ 5/8/2017 FEMA Flood Risk Review Meeting CCSF • FEMA Actions • Support the June 15, 2017 Seal Beach Public Meeting • Prepare Flood Hazard Determination docket for the Federal Register • Publish notice of formal appeal period in community designated newspapers • Initiate formal appeal period • Community Actions Review preliminary Flood Insurance Study report, FIRM panels, and Summary of Map Actions Submit comments to FEMA Tailor outreach plan Communicate flood risk 9 FEMA Risk~ Open Pacific Coast Study 5/8/2017 0