US Army Corps
of Engineers
New Orleans Hurricane Protection
System Repair and Restoration
Coastal Protection and Restoration
Advisory Committee
3 April 2006
D + 217
H - 59
One Team: Relevant, Ready, Responsive, Reliable
1
US Army Corps
of Engineers
Agenda
• Existing System
• Current Work
• Repair and Restoration
• Funding
• Summary
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2
US Army Corps
of Engineers
Existing New Orleans Area
Hurricane Protection
Legend
Federal
Federal Non-COE
Non-Federal
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3
US Army Corps
of Engineers
Southeast Louisiana Hurricane
Protection Components
• Repair:
• Return pre-Katrina protection to hurricane-damaged components by 1
June 2006
• Restore:
• Restore undamaged levees/floodwalls to originally authorized heights by
1 Sep 2007
• Complete:
• Accelerated completion of unconstructed portions of authorized projects
by Sep 2007
• Improve:
• Make improvements to optimize the performance of the existing system
• Certify:
• Raise system to provide 100 year level of protection
• Higher Levels of Protection:
• Louisiana Coastal Protection and Restoration Report - preliminary report
due June 2006, final December 2007
One Team: Relevant, Ready, Responsive, Reliable
as of 3/30/06
4
US Army Corps
of Engineers
Southeast Louisiana
Hurricane Protection System Emergency
Supplemental Funding to Date ($M)
Component
Funded
Repair Existing System and Rebuild to Design Height
$1,533
Complete Authorized System
New Orleans to Venice (Hurricane Protection)
$ 33
West Bank and Vicinity (Hurricane Protection)
$147
Lake Pontchartrain and Vicinity (Hurricane Protection)
$120
Southeast Louisiana (Interior Flood Damage Reduction)
$225
Grand Isle (Hurricane Protection)
$ 15
Larose to Golden Meadow (Hurricane Protection)
$ 4
TOTAL
$2,077 M
One Team: Relevant, Ready, Responsive, Reliable
5
US Army Corps
of Engineers
Southeast Louisiana Hurricane
Protection
ADDITIONAL IMPROVEMENTS
The Bush Administration on February 16 asked Congress to support an additional
$1.46 billion in new funding for improvements to southeast Louisiana’s hurricane
protection system. If approved, the proposal would pay for:
- Permanent pumps and closures for New Orleans’ three outfall canals. ($530
million)
- Two navigable closures that would prevent hurricane surge from entering the
Industrial Canal area. ($350 million)
- Storm-proofing existing interior drainage pump stations in Jefferson and
Orleans Parishes. ($250 million)
- Selective armoring for critical portions of the New Orleans levee system.
($170 million)
- Incorporation of Plaquemines Parish west bank, non-federal levees into the
federal levee system. ($60 million)
- Restoration of critical areas of coastal wetlands and ecosystems needed to
improve long-term hurricane and storm protection. ($100 million)
One Team: Relevant, Ready, Responsive, Reliable
6
US Army Corps
of Engineers
Hurricane Protection System Restoration
Program Summary
Hurricane Protection System
• 350 miles
• 71 pump stations
Damage
• 41 miles severe, 128 miles
moderate damage
• 34 pump stations were nonoperational
Cost
• $ 770 Million
Percent of Pre-Katrina
Protection Restored
53 % Complete
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7
US Army Corps
of Engineers
Inner Harbor
Navigation Canal
Percent of Pre-Katrina
Protection Restored
64 % Complete
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8
US Army Corps
of Engineers
Orleans East Bank
Percent of Pre-Katrina
Protection Restored
29 % Complete
One Team: Relevant, Ready, Responsive, Reliable
9
US Army Corps
of Engineers
New Orleans Outfall Canal
Interim Closure Plan
• Three locations on
Lake Ponchartrain
•Protection by 1 June
2006
•Provide New Orleans
with rainwater drainage
• Prevent storm surge
into canals
• Pumps permit drainage
while closed
One Team: Relevant, Ready, Responsive, Reliable
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US Army Corps
of Engineers
Outfall Canal
Pumping Capacity
Interim Discharge
Capacity
Planned Discharge
Capacity
Total
Inflow
Capacity
1 JUNE
2006
1 JULY
2006
30 SEP
2006
17th St. Canal
10,500 cfs
1,000 cfs
2,800 cfs
6,200 cfs
Orleans Canal
2,690 cfs
1,000 cfs
2,400 cfs
2,400 cfs
London Ave.
Canal
7,980 cfs
1,000 cfs
2,800 cfs
4,300 cfs
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11
US Army Corps
of Engineers
New Orleans East
Percent of Pre-Katrina
Protection Restored
72 % Complete
One Team: Relevant, Ready, Responsive, Reliable
12
US Army Corps
of Engineers
Plaquemines Parish
Percent of Pre-Katrina
Protection Restored
72 % Complete
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13
US Army Corps
of Engineers
Saint Bernard Parish
Percent of Pre-Katrina
Protection Restored
74 % Complete
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14
US Army Corps
of Engineers
Levees / Floodwalls Not At
Authorized Elevation
Due to Subsidence and Elevation Changes
Total Length of
System*
Levee Length Below
Authorized
Floodwall Length
Below Authorized
Orleans East Bank
19 miles
5.2 miles
14.4 miles
IHNC
12 miles
0.8 miles
7.6 miles
New Orleans East
39 miles
5.8 miles
6.0 miles
St. Bernard Parish
30 miles
5.2 miles
0.1 miles
Plaquemines Parish
109 miles
27.0 miles
0.0 miles
East Jefferson
16 miles
4.3 miles
0.5 miles
West Jefferson
66 miles
21.0 miles
6.0 miles
St. Charles
10 miles
6.0 miles
0.2 miles
Totals
301 miles
75.3 miles
34.8 miles
Levee System
* Includes Mississippi River Levees
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Southeast Louisiana HPS
US Army Corps
of Engineers
Emergency Improvements
Outfall Canal Closures
• Three locations on
Lake Ponchartrain
• Prevent storm surge
into canals
• Provide New Orleans
with rainwater drainage
• Removes 14 miles of
floodwalls from primary
HPS
One Team: Relevant, Ready, Responsive, Reliable
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Southeast Louisiana HPS
Emergency Improvements
Navigable Flood Gates
US Army Corps
of Engineers
• Two Locations:
•Seabrook
•GIWW/MRGO
• Precise location
GIWW/MRGO yet to be
determined
One Team: Relevant, Ready, Responsive, Reliable
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Southeast Louisiana HPS
US Army Corps
of Engineers
Emergency Improvements
Navigable Flood Gates
• Prevents storm surge from
Industrial Harbor area
• Removes 20 miles of levees and
floodwalls from primary HPS
One Team: Relevant, Ready, Responsive, Reliable
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Southeast Louisiana HPS
US Army Corps
of Engineers
Emergency Improvements
Selective Armoring
• Levees and floodwalls
will be armored at
critical points to resist
damage from
overtopping
• Transitions points
between levees,
floodwalls, and other
structures will also be
armored
One Team: Relevant, Ready, Responsive, Reliable
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Southeast Louisiana HPS
US Army Corps
of Engineers
Emergency Improvements
Storm Proof Pump Stations
• Dozens of pump
stations in Orleans,
Jefferson, St. Bernard, &
Plaquemines Parish
• Each station is unique.
Study underway to
determine specific needs
• Potential improvements
include emergency
power supplies, raising
critical equipment,
waterproofing, and
hardening
One Team: Relevant, Ready, Responsive, Reliable
20
Southeast Louisiana HPS
US Army Corps
of Engineers
Emergency Improvements
Incorporate Non-Federal Levees
• Raise and strengthen
23 miles of levees on
West Bank in
Plaquemines Parish
• Protect against stormsurge from Barataria
Basin.
• Keep Highway 23
evacuation route open
longer
One Team: Relevant, Ready, Responsive, Reliable
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Southeast Louisiana HPS
US Army Corps
of Engineers
Emergency Improvements
Ecosystem Restoration
• Reversal of wetland
losses in areas affected
by navigation channels,
oil and gas channels, or
other channels and for
modification of the
Caernarvon Freshwater
Diversion structure or
its operation.
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US Army Corps
of Engineers
Levee Certification
Addition Height
Required
BFE if Levee Not Certified
1 Foot Freeboard
D/2 (Waves)
100 Yr Stillwater
D
MSL
Current BFE
Geotechnical/Structural Integrity
One Team: Relevant, Ready, Responsive, Reliable
as of 3/30/06
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Costs to Certify Levee Systems
US Army Corps
by Hydraulic Area
of Engineers
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Costs to Certify Levees by Hydraulic Area –
Details (Population)
US Army Corps
of Engineers
BFE
Dollars
Deficiency
A: Orleans East Bank
%
Cumulative
%
Total
%
Cumulative %
ft.
$--*
0%
0%
150,373
34.1%
34.1%
B: Algiers
2.5 - 3.5 ft.
$129 M
2%
2%
55,825
12.6%
46.7%
C: Jefferson East Bank
/ St. Charles
1.5 - 2.5 ft.
$386 M
6%
9%
119,456
27.1%
73.8%
D: Jefferson West
Bank
0.5 - 4.0 ft.
$657 M
11%
20%
37,607
8.5%
82.3%
0 - 3.5 ft.
$710 M
12%
32%
34,827
7.9%
90.2%
F: St. Bernard / Lower
9th Ward
1.5 - 7.5 ft.
$1,032 M
17%
49%
33,973
7.7%
97.9%
G: Belle Chase /
Algiers East
2.5 - 4.0 ft.
$161 M
3%
52%
3,654
0.8%
98.7%
H: Plaquemines West
Bank
2.0 - 8.0 ft.
$1,717 M
29%
81%
4,374
1.0%
99.7%
I: Plaquemines, Nonfederal
2.5 - 7.0 ft.
$520 M
9%
89%
981
0.2%
99.9%
J: Plaquemines East
Bank
7.0 ft.
$633 M
11%
100%
522
0.1%
100.0%
E: New Orleans East
~
Total
Population
* Area A will be certifiableOne
in 2010
upon completion
of theReady,
work already
authorized andReliable
funded, as well as the work
Team:
Relevant,
Responsive,
proposed in the Supplemental now before Congress.
Sources: USACE, FEMA, HUD, Census
25
US Army Corps
of Engineers
Summary
•
Hurricane Katrina made landfall on 29 Aug 2005, overwhelming
the hurricane protection system in the New Orleans area
•
Temporary repairs and a massive un-watering effort was
completed in 53 days
•
An independent task force is evaluating the performance of the
hurricane protection system
•
Pre-Katrina protection restored by 1 June 2006
•
Additional improvements will be completed by September 2007
•
HPS Emergency Improvements being considered by Congress
•
The South Louisiana Hurricane Protection and Restoration
Technical Report - December 2007
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US Army Corps
of Engineers
Questions
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27
US Army Corps
of Engineers
New Orleans Hurricane Protection
System Repair and Restoration
Coastal Protection and Restoration
Advisory Committee
3 April 2006
One Team: Relevant, Ready, Responsive, Reliable
28