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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
332205092433001 16S16W02ABC1 Smackover
Mississippi embayment aquifer system
Sparta Sand
Sparta Sand
LOCATION - Lat 33°22'05.89", long 92°43'28.60" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 NE 1/4 sec.02, T.16 W., R.16 W., Union County, AR, Hydrologic Unit 08040201, and at Smackover.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 552 ft. Upper casing diameter 10 in; top of first opening 480 ft, bottom of last opening 550 ft.
DATUM - Land-surface datum is 114 ft above North American Vertical Datum of 1988. Measuring point: Vent pipe opening, marked on west side, 2.5 ft above land-surface datum, Dec. 9, 1964 to present. A benchmark elevation have been set and surveyed. Levels will need to be ran at a given point. Benchmark elevation was established via GNSS survey GPS base unit.
PERIOD OF RECORD - Periodic water levels Dec 1964 and Mar 1965, semi-annual Apr 1967 to Oct 1980, annual 1981 to 1990, periodic 1993 to 2000, and continuous Jul 2003 to current year.
GAGE -
Continuous transducer with modem telemetry. As of September 2024, the LSD is 110.82 ft above NAVD88 (Reference Frame NAD_83 (2011) (EPOCH:2010.0000) GEOID18). The MP is 2.16 ft above the LSD.
Prior to September 2024, the LSD was 114 ft above NAVD88 with a measuring point 2.5 ft above LSD.
COOPERATION - Union County Water Conservation District.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 144.41 ft below land surface datum, Mar 31, 1971; lowest water level, 180.92 ft below land surface datum, Mar 3, 1999.
