Hydrology - Water Resources Report 33

Ground-Water Resources of Lee County, South Carolina

Roy Newcome, Jr.


Lee County, S.C., has abundant ground-water resources available for public and industrial supplies and crop irrigation. The Middendorf and Black Creek Formations, of Cretaceous age, overlie the Paleozoic bedrock that lies at depths ranging from 200 to 800 feet from northwest to southeast in the county. Both formations contain numerous sand aquifers capable of supporting moderate to large well supplies. Irrigation wells with yields of 2,000 gallons per minute have been constructed, and public-supply wells produce as much as 1,000 gallons per minute. Pumping tests indicate that considerably larger yields can be obtained, in many places, from high-efficiency wells that take advantage of the available drawdown.

The water has remarkably low mineralization, usually less than 50 milligrams per liter in total dissolved solids concentration. The water has almost no hardness, and it is acidic. A study currently under way is seeking the source, extent, and means of alleviation of excessive radioelement concentrations in some public-supply wells.

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