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NWRC Coastal Prairie Research Program

Existing Prairie Remnants

Railroad prairie remnant in Louisiana

Prairie remnant next to railroad track in Southwest Louisiana.

Coastal prairie in Louisiana once covered an estimated 2.5 million acres. As a result of rice and sugarcane production, oil exploration, and residential and industrial development, less than 500 acres of Louisiana’s coastal prairie remain. In 2002, USGS botanist Larry Allain, Louisiana Department of Wildlife and Fisheries Natural Heritage ecologist Pattie Faulkner, and U.S. Fish and Wildlife Service GIS specialist Robert Greco teamed up to calculate the acreage of known remnants of coastal prairie. Using Global Positioning Satellite coordinates, 1998 aerial photography, and extensive groundtruthing, the approximate acreage of each known remnant was calculated. We classified remnants, based on vegetation, as either upland or wet. Wet prairie is characterized by soils that are saturated for extended time periods and is dominated by plant species with a wetland affinity (e.g., switchgrass and eastern gammagrass). Upland prairie is dominated by more upland plant species (e.g., little bluestem and slender bluestem grass). In 2010 newly discovered prairie remnants were added and coverage was estimated from ground measurements.

Prairie Type

Site Name

Upland Esterwood 0.507
Upland Midland 1 0.834
Upland Midland 2 1.573
Upland Midland 3 0.555
Upland Midland 4 0.202
Upland Midland 5 0.940
Upland Midland 6 0.864
Upland Midland 7 0.560
Upland Midland 8 1.629
Upland Midland 9 0.633
Upland Midland 10 0.016
Upland Midland 11 1.834
Upland Midland 12 0.396
Upland Welsh 2.282
Upland Indian Village 1 0.307
Upland Indian Village 2 0.532
Upland Frey 6.807
Upland Hwy 190, Kinder 1.724
Upland Hwy 165 15.597
Upland Gueydan Hwy 14 –1 2.546
Upland Gueydan Hwy 14 –2 2.251
Upland Hwy 27 South of Sulphur 10.00
Upland Elton 6.725
Upland Fenton 3.233
Upland Iowa 1.462
Upland Nannet Prairie 1.30
Upland Vinton 8.948
Upland Kinder 1 4.519
Upland Kinder 2 10.888
Upland Crowley West, Gueydan, Wright 9.533
Upland Carlyss 10.00
Upland Iowa 5.896
Wet Sulphur 36.818
Wet Lake Charles SE 1.975
Wet Greens Bayou 1 7.766
Wet Greens Bayou 2 74.292
Wet Florence 54.319
Wet Deer Island (White Lake) 82.00
Wet Boudreaux Lake 169.905
Wet Browns Lake 32.630
Wet Moss Lake 74.644


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Page Last Modified: Monday, 28-Sep-2015 14:01:51 EDT