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Mermentau River

Mermentau River
From: Gosselink, 1979; LAcoast, 2003

The Mermentau River is located in Southern Louisiana and flows between Calcasieu Lake and Vermillion Bay on the Chenier Coastal Plain of Texas and Louisiana.

The Mermentau River supplies freshwater for the Mermentau Basin. The Chenier Basin is located between the Mermentau Basin and the Gulf of Mexico, and is unique in that it no longer contains any true estuarine Gulf habitat although historically the basin served as a productive estuarine nursery ground. Freshwater inflow is from the Catfish Point control structure. Presently, several large freshwater lakes (Grand Lake, White Lake) and confined wetlands dominate the region. These habitats are confined within the mainland and isolated from the influence of saltwater by a series of water control structures or 'locks'.

A significant percentage of the basin lands are publicly owned as Federal refuges and State wildlife management areas.

Coordinates:   29.75° N  93.10° W

Gosselink, J.G., C.L. Cordes, and J.W. Parsons. 1979. An ecological characterization study of the Chenier Plain coastal ecosystem of Louisiana and Texas. 3 vols. U.S. Fish and Wildlife Service, Office of Biological Services. FWS/OBS-78/9 through 78/11.

LAcoast. 2003. Located on the web at:

Additional Information:
LACoast - Mermentau Basin
U.S. Fish & Wildlife Service - Lacassine National Wildlife Refuge
Louisiana Deptartment of Wildlife & Fisheries - Rockefeller Wildlife Refuge

Keywords:   Mermentau, River, Bay, Estuary, Freshwater, Lake

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