AHPS Flood Inundation Mapping Activities in Southern Region

1. Tri-Agency Meeting November 17-18, 2009 AHPS Flood Inundation Mapping Activitiesin Southern Region Ben Weiger Hydrologic Services Branch Victor Hom Hydrologic Services Division National Weather Service Southern Region Headquarters Fort Worth, TX National Weather Service Headquarters Silver Spring, MD

2. Southern Region’s AHPS Flood Mapping Presentation Outline • AHPS Flood Mapping Efforts/Accomplishments/ Progress in Southern Region • Southern Regional Support of AHPS Flood Mapping Core Goal Activities • Southern Regional Partnerships

3. NOAA NWS AHPS Flood Mapping Efforts Highlights • ~50 new AHPS Flood Map Libraries since October 2007 • 11 AHPS Flood Map Libraries added in FY2009 • 10 of these were from Southern Region AHPS Supported Southern Region Flood Mapping Projects • Gulf Coast States (Katrina Supplemental) • Lower Colorado River Authority • San Antonio River Authority Other AHPS Supported Flood Mapping Projects • Eastern Region: Susquehanna River Basin Commission, Delaware River Basin Commission, City of Killbuck, Ohio • Central Region: Indiana DHS/IUPUI Polis, Iowa/University of Iowa • Western Region: Boise/Idaho DWR, Northwest Washington

4. Access to AHPS Flood Mapping Locations http://www.weather.gov/water

5. Flood Inundation Map Locations

6. AHPSFlood Maps in Southern Region • WFO Austin/San Antonio, TX (EWX) • * ACRT2 Colorado River at Austin • * ATIT2 Onion Creek at US 183 • * BRTT2 Colorado River at Bastrop • * GETT2 San Gabriel River at Georgetown South Fork • * LGRT2 Colorado River above • La Grange • * SELT2 Cibolo Creek at Selma • * SMIT2 Colorado River near • Smithville • WFO Corpus Christi, TX (CRP) • * GLIT2 San Antonio River at Goliad

7. AHPSFlood Maps in Southern Region Southern Region’s WFO Fort Worth, TX • * DALT2 • Trinity River at Dallas • * FWHT2 • Clear Fork Trinity River at Fort Worth • * FWOT2 • West Fork Trinity River at Fort Worth • * GROT2 • Paluxy River at Glen Rose • * SGET2 • Clear Creek near Sanger • * WEAT2 • Clear Fork Trinity River near Weatherford

8. WFOHouston/Galveston, TX (HGX) • * BACT2 - Colorado River near Bay City • * BBST2 - Buffalo Bayou at Shepherd Drive • * CBST2 - Colorado River at Columbus • * GBHT2 - Greens Bayou at Houston • * HGTT2 - White Oak Bayou at Houston • * HMMT2 - West Fork San Jacinto River • near Humble • * NCET2 - East Fork San Jacinto River • near New Caney • * PPTT2 - Buffalo Bayou at Piney Point Village • * SHLT2 - San Jacinto River near Sheldon • * SPNT2 - Spring Creek near Spring • * WFDT2 - Cypress Creek near Westfield • * WHAT2 - Colorado River at Wharton AHPSFlood Maps in Southern Region

9. AHPSFlood Maps in Southern Region • WFO Lake Charles, LA (LCH) • * AEXL1 - Red River at Alexandria (LA) • * VLSL1 - Vermilion River at Lafayette - Surrey Street (LA) • WFO Shreveport, LA (SHV) • * LPTL1 - Sabine River at Logansport (LA) • * MLUL1 - Ouachita River at Monroe (LA) Excellent!

10. Partnered AHPS Flood Mapping Target Goal for Web Interface • Information to make risk based decisions • Easy product access • Visually oriented products • Link to other AHPS Products • Flood severity categories: minor, moderate, and majorflooding • FEMA 1%, 0.2% Annual Chance Flood Maps • Flood Depth Grids, Floodway • KML and Shapefile Downloads

11. Partnering to Reduce Costs and Improve Efficiency Costs go down Efficiency goes up • Additional cost to complete one inundation map library as part of a detailed FEMA FIS: 5 – 10 K • Cost doubles and time increases if inundation map library is created after the FIS is completed: 10 – 20 K • Developing inundation libraries in conjunction with the detailed FIS yields significant user benefit for small incremental cost. • AHPS Web Implementation: ~7 K

12. SR AHPSFlood Maps in Development • FY2010 Deliverables • VICT2 - Guadalupe River in Victoria, TX ( CRP and WGRFC ) • DUPT2 - Guadalupe River in Bloomington, TX ( CRP and WGRFC ) • CART2 - Elm Fork Trinity at Carrollton, TX ( FWD and WGRFC ) • HOLL1 - Tickfaw River in Holden, LA ( LIX and LMRFC ) • SEGT2 - Guadalupe River at Seguin, TX ( EWX and WGRFC ) • TODA1- Black Warrior River at Tuscaloosa, AL(Oliver L&D) ( BMX and SERFC ) • SHEA1 -Aldridge Creek on Sherwood Dr in Huntsville , AL ( HUN and LMRFC )

13. SR AHPSFlood Mapping Contributions River Forecast Centers - Hydrologic and Hydraulic Modeling - Inundation Shapefile and Depth Grid Development - Hydrologic and Hydraulic Review - Bridge Clipping - Levee Review - QA/QC Weather Forecast Offices - QA/QC - Stakeholder Coordination and Review

14. AHPSFlood MappingCore Goals Team Members:Victor Hom* (OCWWS HSD); Seann Reed (OHD); Doug Marcy (NOAA CSC); Laurie Hogan (Eastern Regional HSD); Wendy Pearson (Central Regional HSD); Kris Lander (Central Regional HSD); Frank Bell (West Gulf RFC); Brian Astifan (WFO Cleveland); OH, Brent Bower (WFO Seattle, WA) National Core Goal: Improve flood forecast inundation maps FY10 AHPS Objectives: (1) Update the NOAA Flood Inundation Map Guidelines to document the recommended methods and standards to produce Flood Inundation Map Libraries affected by levees and bridges and (2) Implement, via the AHPS web portal, additional flood inundation mapping libraries and provide assistance to the regions for develop-ment/implementation of other AHPS flood inundation mapping. See https://ocwws.weather.gov/intranet/floodmap/index.shtml

15. Flood Inundation Mapping Training Module Target Audience: Service Hydrologist, Hydrologic Focal Points, Hydrology program managers, QA/QC board, regional HSD staff , RFC staff , Other non-NWS organizations (emergency managers, etc) Purpose: To understand the AHPS 1-D flood map product and how to communicate this information to the public. Target Date: - Summer 2010 (online via Comet )

16. Training for AHPS Flood Mapping Quality Consistency Checking Target Audience: - Regional QC Review Board Purpose: - Hands-on Workshop for Stage 1 QC’ing of the Shapefile and Depth Grid Deliverables prior to AHPS Implementation Processing to ensure quality assurance and consistency of AHPS Flood Maps. Target Date: - February 2010 at NOAA Coastal Service Center in Charleston, South Carolina

17. SR Flood Mapping Prospects Southeast RT Inundation Flood Mapping - USGS Georgia Science Center, FEMA Region IV, USACE (Mobile) - Last meeting in Georgia on October 29th. - SERFC is working with USGS Georgia to scope flood mapping projects in Georgia. LMRFC Flood Visualization - Study entitled “Visual Analytics for Assessment and Interpretation of Simulated River Flooding” with Mississippi State University. - LMRFC is working with MSU Develop visual analytics tools to enable scientists and forecasters to better interpret and distribute hydrologic information and for emergency managers to better visualize areas to be impacted by flooding to support decisions on evacuations. WGRFC/IWBC - WGRFC have coordinated with IWBC on the possibility of developing flood maps on the Rio Grande to support IWBC, Border Patrol, and DHS needs.

18. National Weather Service … working with partners to improve the communication of flood risk