Protecting People, Property and Our Way of Life
Thibodaux-Lockport-Bayou Blue Gheens Valentine-East Lockport-Larose
Choupic Project Area
The boundary is the area enclosed by a polygon beginning at the intersection of Bayou Lafourche and Lafourche Parish Line northwest of Thibodaux. The Boundary then follows the Lafourche Parish Line north then east to the intersection of the Lafourche Parish Line and LA Highway 20. The boundary continues generally south and west along LA Highway 20 to the intersection of Highway 20 (North Canal Blvd.) and Bayou Lafourche in Thibodaux. The boundary then continues up the east bank of Bayou Lafourche to the point of beginning at the Lafourche Parish line northwest of Thibodaux. The 2010 Census shows a population of 6,393 in this Project Area which represents a 33% increase in population over the last 20 years with a 20% increase in the last 10 years.
Backwater Flood Protection Levees: This broadly defined project would include making improvements to various existing backwater flood protection levees within the project area. Targeted areas include the Community of Choupic along Highway 304, and the Chackbay Community along the north side of Highway 20 to the Parish Line. This broadly scoped project is assigned the following COA and estimated funding is primarily for project development.
Project COA 6400.50Z, Estimated Cost: $100,000.00
While no threats were reported during Hurricane Isaac in August of 2012 to the following system(s), record high water pushed by the storm into the upper portions of the Barataria Basin and high rainfall amounts give reason to consider improvements to the following systems. The following individual projects are being added as a result of this newly demonstrated weakness to flood protection. Further Project Development is required in the following system.
Bowie Forced Drainage Area / Backwater Protection Levees: This 454 acre forced drainage system in the Chackbay Community protects 134 residences, several businesses, and other infrastructure. The system has approximately 19,500 feet of ring levees providing backwater flooding protection. Forced drainage of the area is accomplished with a single pump station with 1-36” diesel fueled, engine driven pump. Overall, the ring levees are insufficient in height and profile. Hurricane Isaac did not top the levee system; but, it was threatened in several locations. Proposed improvements would include:
Re-capping and re-shaping the entire ring levee, clearing and widening and improvements to internal drainage channels / culverts and making improvements at the existing pump station. The NLLD is working to assign this project to an Engineer for project design, development and permitting.
Project COA 6400.56Z, Estimated Cost: $517,000.00
West Choupic Storm Water Protection Project: Broadly defined, this project would provide an open ring levee system surrounding the west Choupic area which currently does not have any stormwater flood protection. This 1,282 acre gravity drainage area has 131 residences, several businesses, and other infrastructure. The project would include the completion of levees with gated culverts along Bayou Onion, Grand Bayou and other area canals to prevent stormwater from entering the area. The project would also likely include a pump to remove rain water during high water events. The NLLD is working to assign this project to an Engineer for project design, development and permitting.
Project COA 6400.51Z, Estimated Cost: $11,981,000.00
Bayou Onion: This project includes clearing Bayou Onion and the adjacent rights of ways from obstructions and vegetation, and performing maintenance dredging from Grand Bayou to the 80 Arpent Canal. The NLCLDD has cleared trees from this Canal post Hurricane Isaac. Engineering and surveying to receive permits for this project has been completed by the NLLD through its Engineer on the project, Leonard Chauvin, Inc. The permit has been received. A contract to complete the Clearing of the Rights of Ways was awarded to Sea Level Construction during our March 2014 meeting. The contract amount is for $201,460.00 with a performance period of 120 days.
Project COA 6400.52Z, Estimated cost: $501,521.00
80 Arpent Canal: This project includes clearing the 80 Arpent Canal and the adjacent rights of ways from obstructions and vegetation, and performing maintenance dredging from LA 20 north to the Parish Line. Engineering and surveying to receive permits for this project are currently in process by the NLLD via Leonard Chauvin, Inc. The NLCLDD has cleared trees from this Canal post Hurricane Isaac. This project is also continues into the St. James Project Area. Recently, the NLLD received $1.1M in State Capital Outlay funds for this project. The permit for this project is expected shortly and the project should be out for bid in the 4th qtr. of 2014.
Project COA 6400.53Z, Estimated cost: $1,356,000.00
(See also 6500.52Z below)
Grand Bayou: This project includes clearing Grand Bayou and the adjacent rights of ways from obstructions and vegetation, and performing maintenance dredging from Highway 20 to Bayou Onion. Engineering and surveying to receive permits for this project are currently in process by the NLLD through its Engineer on the project, Leonard Chauvin, Inc. The NLCLDD has cleared trees from this Bayou post Hurricane Isaac
Project COA 6400.54Z, Estimated cost: $892,000.00
North & South Choupic Levee Realignment: This project has been created due to the prior actions of the Parish in constructing a levee not in accordance with US Army Corps approved alignment on the north side of the Choupic Community. The Corps is pressing the issue and forcing the Parish to remove the existing levee and reconstruct it along the approved route. The NLLD has been asked by the Parish to help with the facilitation of the new levee alignment and to deal with the perspective and impacted landowners in the acquisition of Rights of Ways or expropriation of required property. The parish has worked out a compromise with the Corps and the levee will remain in place with gated culverts installed. The south side of the proposed levee alignment is in line with the prior implemented Chackbay 101B project. Initially, the Chackbay 101 project had included an “A” and “B” phase. The Parish only completed the “A” phase. This project would complete the remaining portions of the “B” phase.
Project COA 6400.55Z, Estimated Cost: $353,000.00.
North Thibodaux Drainage Improvements. The City of Thibodaux hired an Engineer to perform a Drainage Study and to recommend drainage projects to improve existing drainage conditions in that area. The NLCLDD has hired David Waitz as the Engineer and is coordinating with the City of Thibodaux to complete these phases as required. The Engineer recommended completing this work in three phases as follows.
Phase A – Improving Outfall along the Subdivisions western Boundary: This project primarily involves upgrading culverts in the outfall as well as existing culverts as indicated in the “red” drainage basin in the study. The engineer for this Phase, David Waitz has been hired and is completing final design. The project will then be advertised for construction bids.
Project COA 6400.57Z, Estimated Cost: $103,100.00
Phase B – Improving Drainage along the Coulon Road: This project primarily involves upgrading culverts along Coulon Road as well as improvements as indicated in the “blue” drainage basin in the study.
Project COA 6400.58Z, Estimated Cost: $343,700.00
Phase C – Diversion of cross streets drainage to the Outfall along the Subdivisions Western Boundary: This project involves the improvements defined in the in the study to divert cross street drainage to the outfall on the western boundary of the subdivision.
Project COA 6400.59Z, Estimated Cost: $442,125.00
Abbey Lakes Subdivision, Drainage Issues: Currently, the Parish has hired Duplantis Design Group to propose solutions to the recurring drainage issues in this subdivision. The Engineers have completed some modeling and is discussing options with the Parish. The NLLD remains in a technical support role for this project at this time.
Project COA 6400.60Z, Estimated cost: $10,000.00