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FLOOD PROTECTION PROJECTS
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Dularge
Flood Protection Project, State Project No. 716-55-0001
The
flood control levee being constructed will serve Terrebonne Parish
by providing improved coastal flood protection. The levee is
located south of Houma, Louisiana on the west side of Bayou Dularge,
extending 22,700 feet southward. The project’s goal is to
provide tidal flood protection to “first lift” Elevation 7.0
NGVD. This levee project is Reaches II & III of a four (4)
reach construction project for Segment 1 of the TLCD’s Overall
Hurricane Protection System.
Presently
the project is under construction with completion anticipated in
December 2003
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Isle
de Jean Charles 4-3C-West Project
This
project is located on the right descending bank of Bayou St. Jean
Charles. It extends from the intersection of Parish Road 73
and Point Farm Ridge south to the end of the island. This
proposed forced drainage system, approximately 8,500 feet in length,
would provide protection for the residents of the Island from tidal
events as well as rainfall.
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Barrier
Plan, Bayou Black Levee and Pump Station, Reach II
The
current alignment of the Lower Atchafalaya River Study leaves the
residents south of Highway 182 between Minors Canal and the Gibson
area without flood protection. The Barrier Plan, was a study
undertaken by the former NTDCD in September 1996 to persuade the
U.S. Army Corps of Engineers (USACE) and the State of Louisiana to
substitute the current alignment recommended in the LAR Study with
the proposed Barrier Plan Reach I, II, and III.
Terrebonne
Levee and Conservation District (TLCD) on October 28, 1999
authorized CEEC, Project Engineers, to provide Engineering Services
for the Design and Construction of the Barrier Plan, Bayou Black
Levee and Pump Station, Reach II. The objective of this
project is to provide flood protection and drainage to the Greenwood
Subdivision area, along with flood protection to the area between
Hanson Canal and the Elliot Jones Canal.
CEEC
is currently working on the plans and specifications for Bayou Black
Levee and Pump Station, Reach II.
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Montegut I.E.B.
(Ward 6) Project
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Ward
7 Project
The
Ward 7 Levee System Phase 1 is located on the right descending bank
of Bayou Petit Caillou from Boudreaux Canal north to the Lashbrook
Pump Station; approximately 31,000 feet. The project consists
of repairing nine failure areas along this levee alignment.
Detailed engineering was performed to determine the most cost
effective method for repairing the levee with the shortest
construction time. It was determined that the method for
repairing the levee would be to degrade the existing levee and place
a vinyl sheet pile flood wall within the new levee crown to provide
protection for the residence from rainfall, tides and minor storm
events. This method of repair can also be used to raise the
elevation of the system in low lying areas.
This
information was presented to the TLCD and the TPCG in which the TPCG
has plans to repair at a minimum 3,100 feet of this levee system.
The TLCD and TPCG are currently applying for Louisiana State Wide
Flood Control Funding to refurbish the whole levee and increase
stability and strength.
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Chacahoula
Project
The
Chacahoula Basin Watershed is enclosed by man-made boundaries.
The basin comprises approximately 107,179 acres and is bounded to
the north by LA 1, US 90 to the south, LA 662 and LA 398 to the
west, and to the east by LA 311 and LA 20. On August 3, 1998, the
North Terrebonne Drainage and Conservation District (NTDCD) in
conjunction with the Louisiana Department of Transportation and
Development authorized Coastal Engineering and Environmental
Consultants, Inc. (CEEC) to conduct a hydrology study of the
Chacahoula Basin. The purpose of the study was to analyze flooding
in the Chacahoula Basin in terms of both the ecology and human
needs, and to develop a long-term management plan. The goal is
to develop a water management plan to reduce flooding of residences
and maintain the optimum water levels for wetland regeneration.
Additionally, the basin may be able to serve as storage area for the
retention of excess rainfall and minimize peak flow of the drainage
channels. Authorization for implementation is pending.
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DEPARTMENT OF NATURAL RESOURCES COSPONSORED
PROJECTS
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CURRENT PROJECTS
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Falgout
Canal Wetlands Project DNR Project No. 2503-02-40
This
project is a Louisiana Department of Natural Resources / Coastal
Restoration Division state project constructed in 1993 and is an
active marsh management project incorporating a variety of water
control structure types. The project area is located south of
Houma and is bordered by Falgout Canal to the south, the natural
ridge of Bayou Dularge to the west, a natural ridge to the north,
and the Houma Navigational Canal (HNC) to the east. The
project area, which encompasses 7,423 acres, consists of
cypress/tupelo swamp (living and dead), fresh/intermediate marsh,
brackish marsh, and open water. The objectives of this project
are to stabilize water levels, reduce salinities, and improve
wildlife habitat.
The
eastern boundary of Falgout Canal has been eroding very rapidly due
to the high volume of large boat and barge traffic in the HNC.
This boundary is approximately 6.5 miles long and extends from Forty
Acre Bayou to the intersection of Falgout Canal and the HNC).
Several breaches have already occurred and allowed saltwater
intrusion into the project area. Even though repair efforts
with dredge material were performed by the Terrebonne Parish
Consolidated Government in July 2001, the boundary is still in need
of a more resilient repair method such as using rock for erosion
protection.
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Montegut
Marsh Management Project DNR Project No. 2503-01-22
This
project provides for emergency maintenance of an existing levee
located in the Montegut Marsh Restoration Project and for additional
maintenance as the need arises over the next two years. The
project is part of the Pointe-aux-Chenes State Wildlife Management
Area which is under the management of the Louisiana Department of
Wildlife and Fisheries. The Louisiana Department of Natural
Resources participated in construction and repair activities on the
levee during the years of 1987 through 1996.
The
levee is approximately 18,000 feet long and requires periodic
maintenance largely due to the poor soil with which it was
constructed. Several very low sections in the levee presently
allow high-salinity water to enter the project area during high tide
events.
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Bayou
LaCache Wetlands Project DNR Project No. 2503-98-25
Construction
of the Bayou LaCache Wetland Project was completed in September,
1996 under a cost share arrangement between Terrebonne Levee and
Conservation District and the Louisiana Department of Natural
Resources. This project is a marsh management, which has
resulted in the general improvement of the marsh area under
management. Presently, the activities under this current
project include operations and maintenance activities necessary to
properly operate and maintain the Bayou LaCache Wetland facilities
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