1. 1 US Army Engineer Research and Development Center FEMA REGION III COASTAL MAPPING PROJECT May 19, 2011 Coastal Analyses and Outreach Robin Danforth, FEMA Region III David Bollinger, FEMA Region III Jeff Gangai, RAMPP Christine Worley, RAMPP

2. 2 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Today’s Discussion  Overview and Status of Region III Coastal Study Why a new coastal study is needed Storm Surge Analysis Wave Height Analysis Coastal Study Timeline  Outreach Efforts Outreach Strategy Coastal Outreach Advisory Team (COAT) Coastal Community Meetings Outreach Materials  Questions/Discussion

3. 3 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Why a Region III Coastal Study Project?  Coastal flood risk information is out-of-date  New Coastal Guidelines need to be implemented  Update base data such as topographic dataset and aerial imagery to high resolution products and seamless Digital Elevation Model (DEM)  Take advantage of higher performance numerical modeling  Take advantage of improvement in GIS technologies to allow for more accurate FIRMs

4. 4 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Where Will the Study Occur?  All of Region III coastal counties/cities (Atlantic Ocean Chesapeake Bay, Delaware Bay and their tributaries)

5. 5 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Coastal Study Process FLOODPLAIN BOUNDARY & FLOOD HAZARD ZONE MAPPING OVERLAND WAVE HEIGHT & RUNUP ANALYSIS STORM-INDUCED EROSION FRONTAL DUNE DELINEATION FIELD RECONNAISSANCE STARTING WAVE CONDITION ANALYSIS STORM SURGE ANALYSIS TERRAIN PROCESSING

6. 6 US Army Engineer Research and Development Center Jeff Hanson Mike Forte Region III Storm Surge Project Managers USACE-FRF Region III Storm Surge Project Update

7. 7 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Development Phase (2008-2011) Develop and validate a storm surge modeling capability for the assessment of inundation risk in Region III Consistent 10-m DEM for the region Extratropical storm wind fields Hurricane storm hazard (JPM approach) Integrated flood risk modeling system Comprehensive system validation GIS database and display capacity Production Phase (2011) Compute and assess the Region III flood hazard values for 10-, 50-, 100- and 500-yr return periods Expected completion September 2011 Flood Levels 10-, 50-, 100-, & 500-year Return Period Analysis - Hurricanes - Extratropical Storms Storm Surge Modeling Winds WavesWater Levels Storm Forcing -Extratropical Wind Fields - Hurricane Tracks High-Res Bathy / Topo Mesh Project Objectives

8. 8 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Wave Height Analysis Status  Modeling set-up Transect Layout completed Field Reconnaissance completed Obstruction carding completed Development of a seamless (topo/bathy) Digital Elevation Model (DEM)  Wave height analysis (waiting on surge results) Starting wave conditions (wave height and period) Wave setup – Determined from the ADCIRC model Dune/Bluff erosion WHAFIS modeling for overland wave height computation Wave Runup Coastal Hazard Mapping

9. 9 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Transect Placement Transect Layout City of Virginia Beach

10. 10 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Field Reconnaissance

11. 11 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Elements of a Coastal Floodplain

12. 12 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Limit of Moderate Wave Action (LiMWA)  Defined by the area subject to wave action with waves greater than 1.5 feet in height SWEL = Stillwater Elevation BFE = Base Flood Elevation

13. 13 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Limit of Moderate Wave Action (LiMWA) FEMA Procedure Memorandum No. 50, 2008  At present not a regulatory requirement  No Federal Insurance requirements tied to LiMWA  CRS benefit for communities requiring VE Zone construction standards in areas defined by LiMWA or areas subject to waves greater then 1.5 ft.

14. 14 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Region III Coastal Study Timeline Surge Study Results Fall 2011 Surge Study Results Fall 2011 Coastal Hazard Analysis Results Fall 2011- Spring 2013 Coastal Hazard Analysis Results Fall 2011- Spring 2013 Preliminary DFIRMs Spring 2012– Winter 2013 Preliminary DFIRMs Spring 2012– Winter 2013 Public Comment Period Spring 2012– Spring 2014 Public Comment Period Spring 2012– Spring 2014 Letter of Final Determination Spring 2013– Winter 2014 Letter of Final Determination Spring 2013– Winter 2014 New Effective Coastal DFIRMs Summer 2013 – Summer 2015 New Effective Coastal DFIRMs Summer 2013 – Summer 2015

15. 15 US Army Engineer Research and Development Center US Army Engineer Research and Development Center OUTREACH

16. 16 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Region III Coastal Outreach Strategy  Introduction  Mapping Project Scope  Coastal Outreach Strategy  Summary  Appendices Participating Coastal Counties/Communities Current Mapping-Related Initiatives in Region III Coastal Outreach Advisory Team Key Stakeholders Outreach Implementation Plan Flood Risk Open House Plan

17. 17 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Coastal Outreach Advisory Team  The roles of the COAT: Share local data or new information Relate study information and status to other stakeholders Provide input on outreach methods, target groups, etc. Identify potential contentious issues Provide input on coastal study methodology

18. 18 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Coastal Outreach Meetings  Regional Technical Storm Surge Study Meetings  Stakeholder Meetings – COAT  5 Community Meetings per Coastal County or City  Initial Coastal Community Coordination Meetings  Flood Study Review Meetings  Resilience Meetings  Final Community Coordination Meetings  Open Houses (Including Public)

19. 19 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Initial Outreach - Coastal Community Coordination Meetings  Meetings for 3 DE counties held December 2010  Meetings for all 15 coastal counties and city in MD held November 2010 – April 2011  Meetings for 13 VA coastal counties/cities held March – April 2011  Meetings for remaining 19 VA coastal counties/cities and 3 PA coastal counties TBD

20. 20 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Initial Outreach - Coastal Community Coordination Meetings (continued)  Meeting summaries prepared for each meeting that recorded county and community comments  Main comments:  Mapping:  Multiple LFD/effective dates and thus multiple adoption periods and ordinance revisions.  Some are being combined (Harford, Caroline, Kent, Queen Anne’s, Worcester Counties, MD  Others will need to be determined (Calvert, Charles, Prince George’s and Talbot Counties, MD, Kent County, DE)  Will BFEs and floodplain widths be increased?  New VE Zones/Ordinance updates

21. 21 US Army Engineer Research and Development Center US Army Engineer Research and Development Center  Main comments (continued)  Ordinances:  New model floodplain ordinance in MD & VA  Assistance with MD ordinances will be provided by Ed Copeland  Costs to communities:  Changing ordinances  Notifying property owners  Answering questions  Insurance  Support for insurance questions and outreach  CD with FEMA brochures and FAQs  MD counties directed to www.mdfloodmaps.org www.mdfloodmaps.org  Grandfathering Initial Outreach - Coastal Community Coordination Meetings (continued)

22. 22 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Coastal Study Outreach Materials  Website – www.r3coastal.comwww.r3coastal.com  Property locator tool  Outreach factsheets  Outreach meetings PowerPoint Slides CD Handout

23. 23 US Army Engineer Research and Development Center US Army Engineer Research and Development Center Questions/Discussion