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Infrastructure, Flood Risk and Community Resilience

2012 Legislative Summit  Washington, D.C.  March 27, 2012. Infrastructure, Flood Risk and Community Resilience. Sandra K. Knight, PhD, PE, D.WRE Deputy Associate Administrator for Mitigation Federal Insurance and Mitigation Administration. State of U.S. Dam and Levee Infrastructure.

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Infrastructure, Flood Risk and Community Resilience

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  1. 2012 Legislative Summit Washington, D.C. March 27, 2012 Infrastructure, Flood Risk and Community Resilience Sandra K. Knight, PhD, PE, D.WRE Deputy Associate Administrator for Mitigation Federal Insurance and Mitigation Administration

  2. State of U.S. Dam and Levee Infrastructure Source: ASCE Report Card for America’s Infrastructure Source: ASCE Report Card for America’s Infrastructure

  3. Hundreds are suing the Tennessee Valley Authority after the Kingston Fossil Plant’s coal ash retention pond burst on 12/22/08. The cost is estimated at $675-$975 million, not including litigation and environmental remediation costs. Photo courtesy of Earth First.com Lake Delhi dam broke 7/24/10 , draining a decades-old recreational lake in minutes. AP Photo/The Gazette, Julie Koehn Taum Sauk Hydroelectric Dam Failure in Missouri sent more than a billion gallons of water into a popular state park. Courtesy of Hydroelectric Reform Coalition

  4. National Dam Inventory

  5. Levee Accreditation Status

  6. Levee Accreditation Status

  7. The Federal Interagency Floodplain Management (FIFM) Task Force The re-established FIFM Task Force • Co-chaired by FEMA and the USACE • 13 Member agencies • 2 Advisors

  8. Tools for Risk Communication

  9. Levee Analysis and Mapping • Throughout Map Modernization, stakeholders expressed concern with the “without-levee” procedures used to map non-accredited levees • In February 2011, a group of U.S. Representatives and Senators wrote to FEMA requesting a revision to the current practice of mapping levees and their associated risks. • Stakeholders and Congress feel this previous approach doesn’t reflect the hazard reduction that some non-accredited levees may still afford.

  10. What this is and is not The approach is not • A holistic solution for levee issues in the NFIP: • National Academy of Sciences study kicked-off • NFIP Reform • A solution addressing recommendations of other entities, such as Levee Task Force or National Committee on Levee Safety • A communication of the broad risks associated with levees and potential failures • Requirements • Flexible • Collaborative • Cost-effective • Repeatable • Understandable (explainable) • Addresses riverine and coastal levees • Constraints • No statutory or regulatory changes (44 CFR 65.10 remains in effect for full levee accreditation) • Cannot make changes to the overarching National Flood Insurance Program

  11. Overtopping (Example) • Overtopping Inundation Analysis • Criteria: Levee Crest is Lower than the BFE, but it can be documented that the levee can structurally withstand the 1% flood • Mapping Approach: Overtopping Analysis to Map Special Flood Hazard Area; Natural Valley Floodplain Analysis to Map Zone D

  12. The Way Ahead …

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