Saltwater Contamination of Ground Water at Brunswick, Georgia and Hilton Head Island, South Carolina
Krause, Richard E.
Clarke, John S.
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Sustained pumping from the Upper Floridan aquifer in the coastal area of Georgia and adjacent lowcountry of South Carolina has resulted in substantial reductions in artesian pressure in the aquifer, which has resulted in saltwater intrusion at two locations in the area. At Brunswick, Georgia, brine from deeply buried paleokarst zones has intruded the aquifer by migrating upward through solution-enlarged breaks in the confining units. At the northern end of Hilton Head Island, South Carolina, lateral encroachment of seawater has occurred. Understanding the conditions under which these types of intrusion occur is of importance to managing the water resources of the coastal area.