USGS Water-Year Summary 2024
313146083491601 15L020
Floridan aquifer system
Upper Floridan Aquifer
LOCATION - Lat 31°31'46", long 83°49'16" referenced to North American Datum of 1927, Worth County, GA, Hydrologic Unit 03110204,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 450 ft. Upper casing diameter 18 in; top of first opening 212 ft, bottom of last opening 450 ft.
DATUM - Land-surface datum is 423.89 ft above North American Vertical Datum of 1988. Measuring point: 2015 measurement,original beginning date 20171016, 3.3 ft above land-surface datum, Nov. 16, 1977 to present. The land-surface datum was revised on March 18, 2024, based on a more accurate determination of the land-surface datum. Land-surface datum is 423.89 ft above North American Vertical Datum of 1988. Prior to March 18, 2024, the land-surface datum was 420.00 ft above National Geodetic Vertical Datum of 1929.
PERIOD OF RECORD - April 20, 1972 to current year.
COOPERATION - Georgia Department of Natural Resources, Environmental Protection Division.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 190.30 feet below land-surface datum, March 7, 1978 (discrete measurement); Lowest water level, 222.16 feet below land-surface datum, September 26, 2023.