Performance of the Performance of the New Orleans Flood Control - PowerPoint PPT Presentation

Performance of the Performance of the New Orleans Flood Control System: New Orleans Flood Control System: Hurricane Katrina Hurricane Katrina http: / / www.noaanews.noaa.gov/ stories2005/ s2506.htm Presented to the Senate Committee on Homeland Security Presented to the Senate Committee on Homeland Security and Governmental Affairs and Governmental Affairs November 2, 2005 November 2, 2005 Washington DC Washington DC

Levee Assessment Team Levee Assessment Team � ASCE (Geo ASCE (Geo- - Institute & COPRI) Institute & COPRI) � � NSF (UC Berkeley, CA DWR) NSF (UC Berkeley, CA DWR) � Leading experts in geotechnical Leading experts in geotechnical engineering, hydraulics, and systems engineering, hydraulics, and systems

th Street Canal Street Canal 17 th 17

th Street Canal Street Canal 17 th 17

th Street Canal Street Canal 17 th 17

London Avenue Canal, North Breach London Avenue Canal, North Breach

London Avenue Canal, North Breach London Avenue Canal, North Breach

London Avenue Canal, North London Avenue Canal, North Across from Breach Across from Breach

London Avenue Canal, North London Avenue Canal, North Across from Breach Across from Breach

London Avenue Canal, North London Avenue Canal, North Across from Breach Across from Breach Sinkholes

London Avenue Canal, North London Avenue Canal, North Across from Breach Across from Breach Boils Heave

London Avenue Canal, South Breach London Avenue Canal, South Breach

London Avenue Canal, South Breach London Avenue Canal, South Breach

Modelled Storm Surge Heights Storm Surge Heights Modelled Hurricane Katrina Surge at the Industrial Canal & Lake at the 17th Street Ca IC-Peak at 0830 AM; Lake Peak 0900 AM 16 14 12 10 8 6 4 2 0 8/30/09 0:00 8/30/09 6:00 8/30/09 12:00 8/30/09 18:00 8/31/09 0:00 Date & Time (CDT Ind. Canal N216818 Lake @ 17th Canal N206324

Modeled Storm Surge Modeled Storm Surge Courtesy LSU Hurricane Center

Modelled Storm Surge Storm Surge Modelled Courtesy LSU Hurricane Center

Levee Breaches Levee Breaches

Embankment Overtopping Embankment Overtopping

Overtopped Embankment (Sand Core) Overtopped Embankment (Sand Core)

Overtopped Embankment (Sand Core) Overtopped Embankment (Sand Core)

Embankment Successes Embankment Successes

Inner Harbor Navigation Channel Inner Harbor Navigation Channel (Industrial Canal) (Industrial Canal)

Inner Harbor Navigation Channel Inner Harbor Navigation Channel Lower 9th Ward Lower 9th Ward

Lower 9th Ward Lower 9th Ward

Inner Harbor Navigation Channel Inner Harbor Navigation Channel Back Scour at Lower 9th Ward Back Scour at Lower 9th Ward

MRGO, North Bank (New Orleans East): MRGO, North Bank (New Orleans East): Overtopping Back Scour Overtopping Back Scour

MRGO, North Bank (New Orleans East): MRGO, North Bank (New Orleans East): Floodwall Overtopping Failure Floodwall Overtopping Failure

Common Transition Problems Common Transition Problems

Common Transition Failures Common Transition Failures

Common Transition Failures Common Transition Failures

Common Transition Failures Common Transition Failures

Complex Transitions Complex Transitions