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Weir at golf course pond Hunter Army Airfield, Chatham County, Georgia. In foreground is a stage gage for site 320021081074501.

 

Coastal Georgia Alternative Water Resources Links

Fort Stewart-Hunter Army Airfield Alternative Water Resources project home page. Project home

Coastal Georgia Alternative Water Resources

Project Chief: Brian Hughes
Cooperator: U.S. Department of the Army and the City of Pooler, Georgia; Consolidated Utilities LLC, City of Rincon, and City of Richmond Hill
Year started: 2009

Problem

Map of the study area

Saltwater intrusion at Hilton Head Island, South Carolina, has resulted in increased restrictions on groundwater withdrawals from the Upper Floridan aquifer by the Georgia Environmental Protection Division (GaEPD) in the coastal area of Georgia. To meet growing water demand in this area, the GaEPD has encouraged use of alternative water sources to the Upper Floridan, including streams, ponds, and wells completed in the Lower Floridan aquifer and shallower surficial and Brunswick aquifer systems. To assess the water-resource potential of these various sources for potable supply and irrigation, the U.S. Geological Survey, in cooperation with the Department of the Army and the City of Pooler, Georgia, is conducting detailed field investigations at selected sites. Studies were conducted at Hunter Army Airfield in Chatham County, Fort Stewart, in Liberty County, and the City of Pooler in Effingham County.

Objectives

  • Analysis of Shallow Alternative Aquifers (surficial and Brunswick aquifer systems)-Conduct detailed site investigations in new and existing wells, including borehole geophysical logging and flowmeter testing, depth-integrated water sampling and analysis, and aquifer-performance testing to determine the drawdown and water-bearing capacity of the aquifer.
  • Analysis of Lower Floridan Aquifer-Conduct detailed site investigations, including borehole geophysical logging and flowmeter testing, depth-integrated water sampling and analysis, and aquifer-performance testing to determine the drawdown and water-bearing capacity of the Lower Floridan aquifer and interconnection (leakage) with the overlying Upper Floridan aquifer. Perform groundwater model analyses to further assess the effects of pumping on leakage between the Upper and Lower Floridan aquifers.
  • Analysis of Ponds- Conduct detailed site investigations of selected ponds to assess water-supply potential, including describing the local site setting and pond bathymetry, estimating the volume of water stored in the ponds over a range of stages, estimating net groundwater seepage derived from water-budget analyses and pond-discharge tests, and determining the suitability of pond water quality for irrigation purposes.

Publications

Simulated effects of Lower Floridan aquifer pumping on the Upper Floridan aquifer at Rincon, Effingham County, Georgia - U.S. Geological Survey Scientific Investigations Report 2015-5072

Simulated effects of Lower Floridan aquifer at Pooler, Chatham County, Georgia - U.S. Geological Survey Scientific Investigations Report 2013-5004

Hydrologeology and water quality of the Floridan aquifer system and effect of Lower Floridan aquifer pumping on the Upper Floridan aquifer, Pooler, Chatham County, Georgia, 2011-2012: - U.S. Geological Survey Scientific Investigations Report 2012-5249

Hydrogeologic characteristics and water quality of a confined sand unit in the surficial aquifer system, Hunter Army Airfield, Chatham County, Georgia: - U.S. Geological Survey Scientific Investigations Report 2012-5082

AN UPDATE ON THE THICKNESS AND EXTENT OF THE SURFICIAL AQUIFER SYSTEM AND ITS POTENTIAL USE AS AN ALTERNATIVE WATER SOURCE IN COASTAL GEORGIA (PDF)

QUEST FOR WATER IN COASTAL GEORGIA-ASSESSMENT OF ALTERNATIVE WATER SOURCES AT HUNTER ARMY AIRFIELD, CHATHAM COUNTY, GEORGIA (PDF)

HYDROGEOLOGY, HYDRAULIC PROPERTIES, AND WATER QUALITY OF THE SURFICIAL AQUIFER: A POTENTIAL ALTERNATIVE WATER SOURCE AT FORT STEWART, LIBERTY COUNTY, GEORGIA (PDF)

Hydrogeology and Water Quality of the Floridan Aquifer System and Effects of Lower Floridan Aquifer Pumping on the Upper Floridan Aquifer at Fort Stewart, Georgia - U.S. Geological Survey Scientific Investigations Report 2011-5065

Summary of Hydrologic Testing of the Floridan Aquifer System at Fort Stewart, Georgia - U.S. Geological Survey Open-File Report 2011-1020

Summary of Hydrologic Testing of the Floridan Aquifer System at Hunter Army Airfield, Chatham County, Georgia - U.S. Geological Survey Open-File Report 2010–1066

Hydrogeology and Water Quality of the Floridan Aquifer System and Effect of Lower Floridan Aquifer Pumping on the Upper Floridan Aquifer at Hunter Army Airfield, Chatham County, Georgia - U.S. Geological Survey Scientific Investigations Report 2010–5080

Hydrology, Water Quality, and Water-Supply Potential of Ponds at Hunter Army Airfield, Chatham County, Georgia, November 2008–July 2009 - U.S. Geological Survey Scientific Investigations Report 2009-5265

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