Geohydrology of Brooks, Lowndes, and western Echols counties, Georgia

Water-Resources Investigations Report 78-117
Prepared in cooperation with the Georgia Department of Natural Resources



The principal artesian aquifer, a limestone of Eocene to Miocene age, is the main source of water supply for Brooks, Lowndes, and western Echols Counties in south Georgia. Pumpage of about 22 million gallons perday from this prolific aquifer has not posed any problems regarding declining water levels or depletion of the reservoir. However, water-quality problems do occur in the Valdosta area. Seepage-run measurements indicate that the Withlacoochee River north of Valdosta contributes an average of 112 cubic feet per second of water to caverns and sinkholes that recharge the aquifer. Wells near the recharge area withdraw relatively unfiltered water with iron concentration and color intensity exceeding standards for drinking water. South of Valdosta, water from the aquifer contains as much as 3.0 milligrams per liter of hydrogen sulfide, rendering the water unfit for drinking. Water high in sulfate concentration occurs below 550 feet in the lower part of the aquifer in Valdosta, and is assumed to be present at that depth throughout the study area. Generally, sufficient quantities of freshwater can be obtained without drilling to this depth.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Geohydrology of Brooks, Lowndes, and western Echols counties, Georgia
Series title Water-Resources Investigations Report
Series number 78-117
DOI 10.3133/wri78117
Year Published 1979
Language English
Publisher U.S. Geological Survey
Publisher location Doraville, GA
Contributing office(s) South Atlantic Water Science Center
Description Report: vi, 48 p.; 9 Plates
Country United States
State Georgia
County Brooks County, Echols County, Lowndes County
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