Title:
Using Marine Reflection Seismics to Identify Potential Seawater Intrusion Sites in the Upper Floridan Aquifer of Coastal Georgia and South Carolina
Using Marine Reflection Seismics to Identify Potential Seawater Intrusion Sites in the Upper Floridan Aquifer of Coastal Georgia and South Carolina
Author(s)
Foyle, Anthony M.
Henry, Vernon J.
Alexander, Clark R.
Henry, Vernon J.
Alexander, Clark R.
Advisor(s)
Editor(s)
Hatcher, Kathryn J.
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Abstract
The Upper Floridan aquifer (UFA) it the principal source of groundwater for coastal Georgia and South Carolina. A progressive increase in goundwater
use since the late 1800s has resulted in a large (-30-mile
radius) cone of depression on the aquifer's potentiometric
surface that is centered on Savannah, GA. In coastal and
inner shelf areas where the overlying Miocene aquitard is
absent, the UFA is susceptible to seawater recharge. As part of the Sound Science Initiative (SSI), the Georgia Environmental Protection Division (EPD) recently funded
geophysical mapping to identify those locations where the
Miocene aquitard is thin or absent
Geophysical surveys identified ten Areas of Concern (ADCs) where the UFA is susceptible to seawater
intrusion. At each AOC, the aquifer is present at shallow
depth, erosion has removed the aquitard, the overlying
water column is saline, and the area lies within or adjacent to the Savannah cone of depression. Research results are contributing to a database of information being developed
under SSI that will provide input necessary for managing
groundwater resources in southeast Georgia.
Sponsor
Sponsored and Organized by: U.S. Geological Survey, Georgia Department of Natural Resources, Natural Resources Conservation Service, The University of Georgia, Georgia State University, Georgia Institute of Technology
Date Issued
2001-03
Extent
Resource Type
Text
Resource Subtype
Proceedings