Hydrology - Water Resources Report 26
Ground-Water Levels in South Carolina
A Compilation of Historical Water-Level Data
Karen E. Waters
More than 54 years of data from various sources have been compiled, reviewed, and prepared as hydrographs for this publication. These hydrographs show water-level trends in 282 South Carolina wells, 266 in the Coastal Plain physiographic province and 16 in the Piedmont. For approximately one-third of the wells, data are available for a period of 20 years or more; 14 well records contain data for 40 years or more, and 7 of these wells are in Beaufort County. JAS-1, a well located in southeastern Jasper County, has the longest period of record – more than 50 years.
Wells in several more counties have prolonged ground-water level declines or fluctuations. Water levels in the Floridan aquifer in Hampton County show distinct highs in the spring and lows in the fall, probably a result of recharge from precipitation or local seasonal pumping. Water-level records for the Black Creek aquifer in northern Georgetown County show an average decline of nearly 60 feet since the mid-1970’s. Well records for the Black Creek aquifer in Horry County demonstrate the most dramatic decline and recovery over the period of record. Declines as great as 110 feet were recorded through the 1970’s and 1980’s. Between 1988 and 1992, major public water suppliers in Horry County discontinued well use and began using surface water, thus facilitating regional water-level recoveries as great as 100 feet.
A PDF version of this report is available online.
Paper or electronic versions of this report are available from the SCDNR's Columbia office.