Georgia Water Science Center
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Hydrogeology and Impact of Pumping on Shallow Water-Bearing Zones and the Upper Floridan Aquifer, South-Central Georgia
Project Chief: Lester J. Williams
During the drought conditions of 2007, ground-water-level declines in south-central Georgia have resulted in numerous domestic wells “going dry,” requiring pumps to be lowered or drilling of replacement wells. The cause of the declines is unknown but could be related to reduced recharge during the drought, increased pumping from the Upper Floridan aquifer, or a combination of both. Data from the Statewide ground-water monitoring network indicates that ground-water levels have declined more than 30 feet in the past 30 years (see graph, lower right). Additional data were needed to better define the geologic and hydrogeologic characteristics and the interconnection between the shallow water-bearing zones and the Upper Floridan aquifer.
The objective of this study is to define geologic and hydrologic characteristics and interconnection of the shallow water-bearing zones and the Upper Floridan aquifer. The study area includes eight counties in south-central Georgia (see map, upper right). Field work for this study includes: