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USGS Water-Year Summary 2024
331354092322401 17S14W22BAB1
Mississippi embayment aquifer system
Sparta Sand
Sparta Sand
LOCATION - Lat 33°13'54.37", long 92°32'24.17" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 NW 1/4 sec.22, T.17 S., R.14 W., Union County, AR, Hydrologic Unit 08040201,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 607.2 ft. Upper casing diameter 2 in; top of first opening 575.2 ft, bottom of last opening 595.7 ft.
DATUM - Land-surface datum is 205.42 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 2.0 ft above land-surface datum, Aug. 14, 2003 to Aug. 27, 2003; top of casing, 1.6 ft above land-surface datum, May. 14, 2008 to present. The LSD is 205.42 ft above NAVD of 1988. The BM1 (206.61 ft) was surveyed, and levels were run to the LSD (Reference Frame NAD_83 (2011) (EPOCH:2010.0000) GEOID18). The M.P. is 1.46 ft. above land-surface datum.
PERIOD OF RECORD - Aug 2003 to current year.
GAGE -
Continuous transducer with modem telemetry. The data is collected by a Campbell Scientific CR200 Datalogger. A RV50X modem is used to transmit the data via a Laird cellular antenna. A 30 watt solar panel with a 55aHr battery is also at this site.
LSD is 205.42 ft above NAVD of 1988 (Reference Frame NAD_83 (2011) (EPOCH:2010.0000) GEOID18). M.P. = 1.46 ft. above LSD
Prior to October 2024, the LSD was 200 ft above NAVD 88 as determined from a map. Measuring point = 1.60 ft. above LSD
COOPERATION - Union County Water Conservation Board and Union County Water Conservation District
EXTREMES FOR PERIOD OF RECORD - Highest water level, 243.60 ft below land surface datum, March 22, 2022; lowest water level, 319.77 ft below land surface datum, Feb 5, 2005.
