PROJECT STATUS REPORT as of 30-Apr-2020
|PROJECT: Sabine Refuge Structure Replacement (Hog Island)|
|PRIORITY LIST: 3||PROJECT NO: 0339||CWPPRA NO: XCS-47,48i||DNR NO: CS-23|
|PROJECT TYPE: Hydrologic Restoration||NET ACRES BENEFITTED: 953|
|REGION: 4||BASIN: Calcasieu/Sabine||PARISH: Cameron|
|LEAD AGENCY: FWS|
|LOCAL SPONSOR: DEPT. OF NATURAL RESOURCES, STATE OF LA.|
Point of Contact:
DEPT. OF THE INTERIOR
FISH & WILDLIFE SERVICE
Senior Field Biologist
646 Cajundome Blvd.
Lafayette, LA 70506
PROJECT STATUS REPORT as of 30-Apr-2020
Sabine Refuge Structure Replacement (Hog Island)
The project is located on the Sabine National Wildlife Refuge in western Cameron Parish. The project is bounded by the North Line Canal to the north, Pool 3 impoundment to the west, Central Canal to the south and Hwy 27 to the east.
The existing water control structures at Hog Island Gully, West Cove, and Headquarters Canals were inadequate in that they did not provide enough discharge potential to discharge excess water and could not be operated to effectively preclude saltwater intrusion. These inadequacies are the result of structure designs that did not provide sufficient management flexibility. The project replaced the existing structures with ones that have substantially greater discharge potential and greater management flexibility. The project structure dimensions include: 1) the 46-foot wide Hog Island Gully Structure which includes four (4) 7.5 ft wide x 8 ft deep bays and two (2) 3 ft wide x 8 ft deep bays with flapgates on 3 of the 4 large bays with all bays fitted with two batteries of stop logs; 2) the 37 ft wide West Cove Canal Structure includes three (3) 7.5 ft wide x 8 ft deep large bays and two (2) 3 ft wide x 8 ft deep smaller bays with 2 of the larger bays fitted with external flapgates and all bays with two batteries of stop logs; and 3) the Headquarters Canal Structure which includes three (3) 5 ft (60-inch) diameter culverts set at marsh level with an exterior (lakeside) flapgate/sluice gate on each culvert.
PROJECT STATUS: (Project Status Last Updated: 20-May-2016 )
Construction began the week of November 1, 1999 and was completed June 2001. The structures were installed and semi-operational by the following dates: Headquarters Canal structure - February 9, 2000; Hog Island Gully structure - August 2000; and the West Cove structure - June 2001. Initially electrical problems were caused because the "3-Phase" electrical service to the structures was not the proper 3-Phase. Transformers and filters were added to the structures in December 2001. The structures continued to operate incorrectly in the automatic mode because the correct "3-Phase" electricity was not available. Rotary phase converters, installed in September 2003, eliminated motor reversal and other problems for the Hog Island Gully and West Cove structure sites. All structures, except for one bay of the Hog Island Gully structure, were fully operational until late October 2004. The Monitoring Plan was approved on June 17, 1999. The Service will be responsible for all structure operations and minor maintenance and the State CPRA will be responsible for the larger maintenance items. Hurricane Rita in October 2005 overtopped the structures and damaged the electric motors, guard rails and other equipment. Some FEMA funds were received by the State for limited repair of Hurricane Rita damage. Other funds from the Fish and Wildlife Service were used for structure repair and upgrade. The electoral systems of all structures and the structure gates of the Hog Island and West Cove structures were modified from one to "two-stem" systems to provide for greater stability. The structures are now operating well with only occasional minor operational problems. The project is currently in the operation and maintenance phase; it's 20-year life ends in September 2023.
The current project estimate is $6,054,643 , which includes $3,124,337 for construction first costs, and $796,094 and $2,134,212 for 20 years of monitoring and operations and maintenance, respectively.
|LaCoast.gov||Project Managers' Technical Factsheet|