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South Atlantic Water Science Center - Georgia

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A jointed granite gneiss located along Highway 138 approximately 2.5 miles north of the International Horse Park. The jointed granite gniess exhibits well developed fracture openings that parallel gneissic layering.



Groundwater Resources and Hydrogeology of Crystalline-Rock Aquifers in Rockdale County, North-Central Georgia project home page. Project home



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Groundwater Resources and Hydrogeology of Crystalline-Rock Aquifers in Rockdale County, North-Central Georgia

Project Chief: Lester J. Williams
Cooperator: Rockdale County
Year started: 2001

Progress and Significant Results, 2002—2003

  • Compiled data on approximately 450 wells (primarily rural domestic) including field confirmation of well location, casing diameter, well yield, casing depth, total depth, and static/pumping water level.
  • Obtained geophysical logs from 19 wells to characterize the lithology, fracture, and yield characteristics of various rock units throughout Rockdale County.
  • Collected ground-water samples from three wells to characterize water quality.
  • Completed detailed geologic mapping throughout much of Rockdale County and began subsurface correlation with geophysical log data; hydrogeologic units and storage capabilities are being compiled from these data.
  • Identified likely high-yielding water-bearing zones/hydrogeologic units in several parts of Rockdale County.
  • Currently compiling a geographic information system database to combine well data with existing geologic, topographic, hydrographic, and other geographic data.

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