USGS Water-Year Summary 2023
313521084051001 13L049
Floridan aquifer system
Upper Floridan Aquifer
LOCATION - Lat 31°35'21", long 84°05'10" referenced to North American Datum of 1927, Dougherty County, GA, Hydrologic Unit 03130006,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 170 ft. Upper casing diameter 4 in; top of first opening 103 ft, bottom of last opening 170 ft.
DATUM - Land-surface datum is 202.69 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing (on QWDATA field sheet 8/23/94; used for 4/13/94 & 6/5/97 samples),original, 1.65 ft above land-surface datum, Feb. 22, 1982 to present. The land-surface datum was revised on March 14, 2024, based on a more accurate determination of the land-surface datum. Land-surface datum is 202.686 ft above North American Vertical Datum of 1988. Prior to March 11, 2024, the land-surface datum was 204 ft above National Geodetic Vertical Datum of 1929.
PERIOD OF RECORD - January 1, 1985 to current year.
COOPERATION - The Flint River Water Planning & Policy Center.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 12.48 feet below land-surface datum, March 14, 1998; Lowest water level, 45.86 feet below land-surface datum, July 21, 2012.