Hydrogeologic Conditions at Two Seepage Ponds in the Coastal Area of Georgia, August 1999 to February 2001
Peck, Michael F.
Clarke, John S.
Laitta, Michael T.
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The Upper Floridan aquifer is the principal source of water in the coastal area of Georgia, but declining water levels and localized saltwater contamination have resulted in restricted ("capped") withdrawals from the aquifer, and have prompted interest in developing supplemental sources of ground water. In the coastal area, seepage ponds are sometimes excavated at golf courses, farms, or communities by digging through sandy surface soils until the water table is reached. Because these ponds are largely cut off from surface-water runoff, water is largely derived from ground water seeping into the pond. Seepage ponds are often used to supply water for irrigation; however, the water-supply potential of such ponds is poorly understood. The U.S. Geological Survey (USGS), in cooperation with the Georgia Department of Natural Resources, Environmental Protection Division, is evaluating hydrogeologic conditions and pond-aquifer relations at two pond test sites in coastal Georgia to determine their potential as supplemental sources of water for irrigation. This paper describes and contrasts hydrogeologic conditions at seepage pond sites at Brunswick, Glynn County, and in southern Bulloch County, Georgia.