Preliminary Simulation of Pond-Aquifer Flow and Water Availability at a Seepage Pond Near Brunswick, Georgia
Clarke, John S.
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The Upper Floridan aquifer is the principal source of water in coastal Georgia, but declining water levels and local saltwater contamination have resulted in restricted withdrawals from the aquifer in some areas, and prompted interest in developing supplemental sources of ground water. In the coastal area, seepage ponds are sometimes constructed at golf courses, farms, or communities by excavating through sandy surface soils until the water table is reached. These ponds commonly are used to supply water for irrigation; however, the water-supply potential of such ponds is poorly understood. To better define the water-supply potential of seepage ponds, the U.S. Geological Survey (USGS) in cooperation with the Georgia Department of Natural Resources, Environmental Protection Division, is evaluating ground-water flow in the vicinity of two seepage ponds in coastal Georgia. Ground-water-flow models are being developed to better understand pond-aquifer flow. This paper describes results of preliminary simulations at a seepage pond at Brunswick, Ga.