Information Center

FLOOD PROTECTION PROJECTS

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

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.

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.

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.

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.

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.

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.

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