USGS Water-Year Summary 2025
311456081210503 35H070
Floridan aquifer system
Upper Floridan Aquifer
LOCATION - Lat 31°14'54.2", long 81°21'05.3" referenced to North American Datum of 1983, Glynn County, GA, Hydrologic Unit 03070203, and 6.5 miles north of Saint Simons Island, GA
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 780 ft. Upper casing diameter 6 in; top of first opening 640 ft, bottom of last opening 780 ft.
DATUM - Land-surface datum is 20.3 ft above North American Vertical Datum of 1988. Measuring point: top of recorder shelf,original beginning date 20060302, 0.7 ft above land-surface datum, Oct. 21, 2004 to present; Lip of casing inside USGS well shelter, 1.5 ft above land-surface datum, Oct. 28, 2020 to present.
PERIOD OF RECORD - February 2007 to current year.
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.