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Lower Mississippi-Gulf Water Science Center -- Louisiana

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Ouachita Parish

Abstract

Ouachita Parish, located in north-central Louisiana, contains fresh groundwater and surface-water resources. In 2005, about 152 million gallons per day (Mgal/d) were withdrawn from water sources in Ouachita Parish. About 84 percent (128 Mgal/d) was withdrawn from surface water, and 16 percent (24 Mgal/d) was withdrawn from groundwater. Power generation (87 Mgal/d) accounted for 58 percent of the total water withdrawn. Withdrawals for other uses included public supply (22 Mgal/d), industrial (24 Mgal/d), and irrigation (18 Mgal/d). This fact sheet summarizes basic information on the water resources of Ouachita Parish, La. Information on groundwater and surface-water availability, quality, development, use, and trends is based on previously published reports.

Fact Sheet

Water Resources of Ouachita Parish, Louisiana

References

Brantly, J.A., Seanor, R.C., and McCoy, K.L., 2002, Louisiana ground-water map no. 13—Hydrogeology and potentiometric surface, October 1996, of the Sparta aquifer in northern Louisiana: U.S. Geological Survey Water-Resources Investigations Report 02–4053, 3 sheets.

Rogers, J.E., Calandro, A.J., and Gaydos, M.W., 1972, Water resources of Ouachita Parish, Louisiana: Department of Conservation, Louisiana Geological Survey, and Louisiana Department of Public Works Water Resources Bulletin no. 14, 118 p.

Sargent, B.P., 2007, Water use in Louisiana, 2005: Louisiana Department of Transportation and Development Water Resources Special Report no. 16, 133 p.

U.S. Environmental Protection Agency, 1992, Secondary drinking water regulations—guidance for nuisance chemicals: U.S. Environmental Protection Agency publication EPA 810/K- 92-001, 4 p.

U.S. Environmental Protection Agency, 2006, 2006 Edition of the drinking water standards and health advisories: Washington D.C., U.S. Environmental Protection Agency, Office of Water, 12 p.

U.S. Geological Survey, 2008a, Ground-water levels for Louisiana: U.S. Geological Survey digital dataset

U.S. Geological Survey, 2008b, Water-quality samples for Louisiana: U.S. Geological Survey digital dataset

U.S. Geological Survey, 2008c, StreamStats: U.S. Geological Survey digital dataset

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