The Direct Impact of the Mississippi River Gulf Outlet on Hurricane Storm Surge

USACE, New Orleans, Louisiana District Office, 2007. Integrated Final Report to Congress and Legislative Environmental Impact Statement for the Mississippi River–Gulf Outlet Deep-Draft De-authorization Study. Washington D.C.: United States Government Printing Office, 256p.

URS. The Direct Impact of the Mississippi River Gulf Outlet on Hurricane Storm Surge. Performed under: CONTRACT NO. 2503-05-39, Hydrodynamic Modeling Effort for MRGO Study, Prepared for: State of Louisiana, Department of Natural Resources (February 2006)

The MRGO channel does not contribute significantly to peak surge during severe storms, when the conveyance of surge is dominated by flow across the entire surface of the coastal lakes and marsh. Nor does the channel contribute significantly to wave run-up. p. ES-2

Attachment: Numerical Modeling of Storm Surge Effect of MRGO Closure

Joannes Westerink et al., Note on the Influence of the Mississippi River Gulf Outlet on Hurricane Induced Storm Surge in New Orleans and Vicinity, US Army Corps of Engineers, Louisiana (2006).

All Figures from the USR report (large file) - these are also in the report.

Figure 1	Project Area
Figure 2	Corps Estimate of Regional Inundation from Category 4 and Above Storm Surge
Figure 3	LWRRI Estimate of Regional Inundation from Hurricane Georges (1998) Prior to Track Turn
Figure 4	Full 2003 ACIRC Grid
Figure 5	Detail of 2003 ADCIRC Grid for MRGO and Surrounding Area
Figure 6	3D Depiction of 2003 ADCIRC Terrain for MRGO and Surrounding Area
Figure 7	Comparison of Surveyed versus 2003 ADCIRC MRGO Channel Near Shell Beach, Plan
Figure 8	Comparison of Surveyed versus 2003 ADCIRC MRGO Channel Near Shell Beach, Cross Section
Figure 9	Tracks for Hurricane Simulations
Figure 10	3D Depiction of 2003 ADCIRC Terrain with Closed MRGO
Figure 11	Maximum WSE for 124-Knot-Fast Storm, Baseline MRGO
Figure 12	Maximum WSE for 124-Knot-Fast Storm, Closed MRGO
Figure 13	Difference in Maximum WSE for 124-Knot-Fast Storm, Baseline versus Closed MRGO
Figure 14	Storm Surge Stage Hydrographs, 124-Knot-Fast Storm, Baseline versus Closed MRGO
Figure 15	Maximum WSE for Hurricane Betsy, Baseline MRGO
Figure 16	Maximum WSE for Hurricane Betsy, Closed MRGO
Figure 17	Difference in Maximum WSE for Hurricane Betsy, Baseline versus Closed MRGO
Figure 18	Storm Surge Stage Hydrographs, Hurricane Betsy, Baseline versus Closed MRGO
Figure 19	Storm Surge Current Speed Hydrographs, Hurricane Betsy, Baseline versus Closed MRGO
Figure 20	Hurricane Katrina Simulation
Figure 21	Maximum WSE for Hurricane Katrina, Baseline MRGO
Figure 22	Maximum WSE for Hurricane Katrina, Closed MRGO
Figure 23	Difference in Maximum WSE for Hurricane Katrina, Baseline versus Closed MRGO
Figure 24	Storm Surge Hydrographs, Hurricane Katrina, Baseline versus Closed MRGO
Figure 25	Storm Surge Current Speed Hydrographs, Hurricane Katrina, Baseline versus Closed MRGO
Figure 26	Baseline 2003 ADCIRC Levees
Figure 27	Modified Levees
Figure 28	Maximum WSE for Hurricane Katrina, Modified Levees and Closed MRGO
Figure 29	Difference in Maximum WSE for Hurricane Katrina, Baseline versus Modified Levees
Figure 30	Storm Surge Hydrographs, Hurricane Katrina, Baseline versus Modified Levees
Figure 31	Schematic of Wave Set-up and Run-up
Figure 32	HPL Cross Section near Bayou Dupre, Station 673
Figure 33	Lake Borgne to HPL Levee @ Bayou Dupre Transect for Wave Run-up Analysis
Figure 34	Schematic of Wave Generation and Attenuation for Lake Borgne to HPL Levee @ Bayou Dupree
Figure 35	3D Depiction of Higher Resolution ADCIRC Terrain for MRGO and Surrounding Area with Closed MRGO

The Climate Change and Public Health Law Site
The Best on the WWW Since 1995!
Copyright as to non-public domain materials
See DR-KATE.COM for home hurricane and disaster preparation
See WWW.EPR-ART.COM for photography of southern Louisiana and Hurricane Katrina
Professor Edward P. Richards, III, JD, MPH - Webmaster

Provide Website Feedback - https://www.lsu.edu/feedback
Privacy Statement - https://www.lsu.edu/privacy
Accessibility Statement - https://www.lsu.edu/accessibility

Home

Climate Change Project

Table of Contents

Courses

Search

Hurricane Katrina Materials

The Direct Impact of the Mississippi River Gulf Outlet on Hurricane Storm Surge