1 / 59

Managing Floods: Challenges and Strategies for Floodplain Management

Explore the history of flood control and floodplain management, as well as the need for shared responsibility and approaches to minimize damages and educate communities.

mabler
Télécharger la présentation

Managing Floods: Challenges and Strategies for Floodplain Management

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 1993 > $20 Billion

  2. 2005 > $100 Billion

  3. 2008 > $15 Billion

  4. > $25 Billion 2008

  5. What’s Wrong with These Pictures?

  6. Floods are an act of God; flood damages result from acts of men. House Document 465, 89th Congress, 2d Session: A Unified National Program for Managing Flood Losses, August 1966

  7. Floodproofing in a 21st Century Flood Risk Management Context November 2008 New Orleans, La Gerald E. Galloway, Jr., PE, PhD Past-President, American Water Resources Association Water Policy Collaborative, University of Maryland Visiting Scholar, US Army Corps of Engineers

  8. Caution THE SPEAKER DOES NOT REPRESENT ANYONE OR ANY AGENCY. THE OPINIONS EXPRESSED ARE HIS OWN AND DO NOT REFLECT, NECESSARILY, THE POSITIONS OF THE AWRA, THE UNIVERSITY OF MARYLAND, THE ARMY CORPS OF ENGINEERS OR ANYONE ELSE.

  9. Floods Were Part of Early North American History

  10. And People Tried to Deal with the Flood Challenge

  11. STRUGGLE!

  12. Then, A Major Flood Occurred in 1927… And Got Our Attention

  13. And Again in 1936 Lowell Pittsburgh

  14. Early Guidance on Floods • Flood Control Act of 1936 - The Nation • …destructive floods upon the rivers...constitute a menace to national welfare; it is the sense of Congress that flood control is a proper activity of the Federal Government People

  15. Keep the Water Away!

  16. And Flood Protection Was Extended Across the Nation

  17. FLOOD CONTROL!

  18. But Flood Damages Continued to Grow – 1993

  19. And Some Had Other Ideas The Birth of Floodplain Management Gilbert White Jim Goddard

  20. 1953 -TVA Floodplain Management • 1960 - Corps Floodplain Management Services

  21. Thinking in Broader Terms • Senate Select Committee on Water Resources • Water Resources Planning Act of 1965 • Water Resources Council • Principles and Standards

  22. National Flood Insurance Program • Established in 1968 • Led to National Flood Hazard Mapping Program • Mandatory Purchase Provisions in 1973

  23. White House Floodplain Management Review Committee1993-1994 • Determine Causes of '93 Flood • Evaluate Floodplain Management Programs • Recommend Changes in Policies Programs and Procedures

  24. THE FLOOD OF 1993 • Flood Was Significant Hydrometeorologic Event

  25. Major Floods Will Continue to Occur

  26. People and Property Are at Risk in the Floodplain • Most Floodplain Residents Don’t Understand the Hazard • Many Structures Unnecessarily Located in Floodplain

  27. ….and It Isn’t Going to Get Any Better • Increased Development/Growth • Climate Change/Climate Variability • Uncertainty

  28. The Flood Control Infrastructure Has Provided Protection to Millions

  29. But It and Other Human Activity Caused Significant Environmental Degradation

  30. WHAT NEEDS TO BE DONE • Share Responsibility and Costs for Floodplain Management Among Federal, State, and Local Governments and Impacted Populace

  31. Avoid Use of Floodplain: Don't Develop Where You Don't Need To – Zoning - Codes

  32. Minimize Damages to Development that Does Occur and Has Occurred • Hold the Water Where It Falls

  33. Minimize Damages to Development that Does Occur and Has Occurred • Floodproof

  34. Minimize Damages to Development that Does Occur and Has Occurred • Relocate Endangered Structures • Acquire Marginal Lands

  35. Minimize Damages to Development that Does Occur and Has Occurred • Use Levees/Floodwalls, When Justified

  36. Mitigate Damages that Will Occur • Establish Early Warning Systems • Insure Those at Risk • Educate Present and Potential Floodplain Occupants

  37. FLOODDAMAGE REDUCTION!

  38. KATRINA!

  39. US Water Challenges Houston, We Have a Flood Challenge • 72 Years of Flood Control • 40 Years of Flood Insurance • Increasing Flood Damages • Average annual losses - $6 Billion (BK) • Inadequate Protection • Inadequate Maintenance

  40. Risk!

  41. Risk Risk Perceptions and Risk Comparisons If risk “a” is less than risk “b,” and risk “a” is acceptable, then risk “b” should also be acceptable A Threat to That Which We Value Covello

  42. RISK = • Probability of Hazard Occurring • Probability that Protection Will Work • Consequences of Bad Event Occurring

  43. Why Doesn’t Anyone Seem to Understand Risk?

  44. We Lead People to Believe They Were Safe • The Assumption Is “Protection” • We Don’t Talk About or Prepare for Disaster

  45. We Don’t Communicate Residual RiskThere is no such thing as complete protection • Things Do Go Wrong and Consequences Can Be Estimated • No Incentive or Requirement to Cover This Risk • Exposure is Federal Government’s

More Related