- Laguna Madre
- Texas Mid-Coast
- Chenier Plain
- Mississippi River Coastal Wetlands
- Coastal Mississippi-Alabama
Chenier Plain Initiative Area
The Chenier Plain Initiative Area is a rich and complex mixture of wetlands, uplands, and open water that extends roughly 200 miles from Vermilion Bay, Louisiana, to Galveston Bay, Texas (see map at right). It runs from the expansive coastal marshes bordering the Gulf of Mexico shore, inland for 40 to 70 miles through the coastal prairie into areas of intensive rice cultivation. Geographically it includes the Louisiana parishes of Cameron, Calcasieu, Vermilion, Acadia, Jefferson Davis, Allen, and Evangeline, and the Texas counties of Chambers, Jefferson, Orange, and Liberty. Very small portions of Galveston and Harris Counties are also included at the western edge of the Texas segment. Paralleling the coastline are old beach ridges known as cheniers that are characteristic of the area and form natural levees, bordering an immense marsh. Lying within this marsh zone are great estuarine lakes such as White, Grand, Calcasieu, and Sabine. The entire Chenier Plain Initiative Area covers well over 10,000 square miles or approximately 6.5 million acres.
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