Dr. R. B. Seed California’s Levee Issues:  People and Water Supplies at Risk
 
<ul><li>1,503 deaths </li></ul><ul><li>More than 400,000 people displaced,  240,000 still displaced today </li></ul><ul><l...
17 th  Street Canal
Lessons for California
New Orleans U.S. Dams U.S. Dams
New Orleans U.S. Dams U.S. Dams
 
50  to  75 30  to  60
Central Valley Flood Control System <ul><li>City of Sacramento </li></ul><ul><li>Lives (460,000+) </li></ul><ul><li>Proper...
Central Valley Flood Control System <ul><li>City of Sacramento </li></ul><ul><li>Lives (460,000+) </li></ul><ul><li>Proper...
Sacramento Pocket Area
Sacramento Urban Area – 200-year Flood Scenario
Continuing Development in Deep Floodplains
 
California Moving Proactively : -  Calif. DWR & USACE -  $6.5 billion State bonds -  Re-evaluate Urban and Non-Urban   lev...
 
From: Les Harder
 
162 Islands Flooded  in the Delta Since 1900
Sudden/Unexpected Levee Failures Earthquake Failures Erosion by Winds and Waves and River Flows Overtopping Failures Seepa...
 
 
 
 
 
1989 Loma Prieta Earthquake
1940 El-Centro EQ
Bay Area Faults (DRMS)
Comparison with Other Studies (100-yr Return Period Ground motions, Stiff Soil Sites)
 
Annual Probability of Catastrophic Seismic Damage to the Delta:   P f  ≈ 1% to 2% per year (DRMS, 2008)
Resource Management Associates 50 Breach Simulation – July 1 Prior to the Event
Resource Management Associates 50 Breach Simulation – July 1, 12 hours after the failures
Resource Management Associates 50 Breach Simulation – 30 Days After the Failures
 
 
DELTA VISION PLAN Co-Equal Values : Eco-System and Water Supply Governance :  Fair and Just    Comprehensive in Outlook   ...
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Seed Wed Am 102109

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  • Discuss concerns with deep flood plains and the serious life safety issue.
  • Seed Wed Am 102109

    1. 1. Dr. R. B. Seed California’s Levee Issues: People and Water Supplies at Risk
    2. 3. <ul><li>1,503 deaths </li></ul><ul><li>More than 400,000 people displaced, 240,000 still displaced today </li></ul><ul><li>$100 to $150 billion in losses </li></ul>
    3. 4. 17 th Street Canal
    4. 5. Lessons for California
    5. 6. New Orleans U.S. Dams U.S. Dams
    6. 7. New Orleans U.S. Dams U.S. Dams
    7. 9. 50 to 75 30 to 60
    8. 10. Central Valley Flood Control System <ul><li>City of Sacramento </li></ul><ul><li>Lives (460,000+) </li></ul><ul><li>Property, etc. </li></ul><ul><li>Sacramento/San Joaquin Delta </li></ul><ul><li>Water supply for 24 million </li></ul><ul><li>Eco-systems </li></ul><ul><li>Farming, recreation, etc. </li></ul><ul><li>City of Stockton </li></ul><ul><li>Lives (280,000+) </li></ul><ul><li>Property, etc. </li></ul>
    9. 11. Central Valley Flood Control System <ul><li>City of Sacramento </li></ul><ul><li>Lives (460,000+) </li></ul><ul><li>Property, etc. </li></ul><ul><li>Sacramento/San Joaquin Delta </li></ul><ul><li>Water supply for 24 million </li></ul><ul><li>Eco-systems </li></ul><ul><li>Farming, recreation, etc. </li></ul><ul><li>City of Stockton </li></ul><ul><li>Lives (280,000+) </li></ul><ul><li>Property, etc. </li></ul>
    10. 12. Sacramento Pocket Area
    11. 13. Sacramento Urban Area – 200-year Flood Scenario
    12. 14. Continuing Development in Deep Floodplains
    13. 16. California Moving Proactively : - Calif. DWR & USACE - $6.5 billion State bonds - Re-evaluate Urban and Non-Urban levees in the Central Valley - 100-yr level of protection for Urban levees by 2012… - and a plan for 200-yr by 2025 - Seismic policy and criteria to be developed (2012)
    14. 18. From: Les Harder
    15. 20. 162 Islands Flooded in the Delta Since 1900
    16. 21. Sudden/Unexpected Levee Failures Earthquake Failures Erosion by Winds and Waves and River Flows Overtopping Failures Seepage/Piping
    17. 27. 1989 Loma Prieta Earthquake
    18. 28. 1940 El-Centro EQ
    19. 29. Bay Area Faults (DRMS)
    20. 30. Comparison with Other Studies (100-yr Return Period Ground motions, Stiff Soil Sites)
    21. 32. Annual Probability of Catastrophic Seismic Damage to the Delta: P f ≈ 1% to 2% per year (DRMS, 2008)
    22. 33. Resource Management Associates 50 Breach Simulation – July 1 Prior to the Event
    23. 34. Resource Management Associates 50 Breach Simulation – July 1, 12 hours after the failures
    24. 35. Resource Management Associates 50 Breach Simulation – 30 Days After the Failures
    25. 38. DELTA VISION PLAN Co-Equal Values : Eco-System and Water Supply Governance : Fair and Just Comprehensive in Outlook Adaptable over Time Responsible/Capable Trust : Without establishing trust, the various disparate interest groups cannot make forward progress….. Solutions must be Comprehensive : Eco-systems vs. Water Use Water Transmission/Storage/Conservation Local “In Delta” Interests and Values, etc.

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