USGS Water-Year Summary 2023
331609093144902 , 17S21W11DCC2
Mississippi embayment aquifer system
Sparta Sand
LOCATION - Lat 33°16'08.55", long 93°14'48.61" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SE 1/4 sec.11, T.17 S., R.21 W., Columbia County, AR, Hydrologic Unit 11140203, and near Magnolia.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 428 ft. Upper casing diameter 8.00 in; top of first opening 365 ft, bottom of last opening 428 ft.
DATUM - Land-surface datum is 300 ft above National Geodetic Vertical Datum of 1929. Measuring point: UCCD MP, 1.65 ft above land-surface datum, Nov. 19, 1996, to present; Hole in wooden cap orange plug removed, 1.66 ft above land-surface datum, Sep. 14, 2000, to present.
PERIOD OF RECORD - Monthly from Jan 1953 to Oct 1960, periodic from Jan 1961 to Jul 2003, and continuous from Aug 2003 to current year.
GAGE - Continuous transducer with modem telemetry.
COOPERATION - Union County Water Conservation Board.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 238.11 ft below land surface datum, Apr 29, 1953; lowest water level, 354.39 ft below land surface datum, Sep 1, 1965.