USGS Water-Year Summary 2024
345413091493401 03N08W11ACA1
Mississippi River Valley alluvial aquifer
Quaternary Alluvium
LOCATION - Lat 34°54'12.72", long 91°49'34.26" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 NE 1/4 sec.11, T.3 N., R.8 W., Lonoke County, AR, Hydrologic Unit 08020301, and near Wattensaw.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 144 ft. Upper casing diameter 4 in; top of first opening 123.19 ft, bottom of last opening 143.19 ft.
DATUM - Land-surface datum is 257 ft above North American Vertical Datum of 1988. Measuring point: Top of 4-inch pvc casing, 0.81 ft above land-surface datum, Nov. 30, 1998 to Jan. 11, 2005; Floor of box to top of casing, 0.53 ft above land-surface datum, Jan. 11, 2005 to Apr. 27, 2022; Top of 4 inch extension on well casing, 2.6 ft above land-surface datum, Apr. 27, 2022 to present.
PERIOD OF RECORD - Continuous from Jan 1999 to current year.
GAGE - Continuous transducer with data logger.
Land Surface Datum of gage is 257.17 ft above NAVD of 1988, (Reference Frame NAD_83 (2011) (EPOCH:2010.0000) GEOID18), (Tape up to MP = 2.53 ft.).
Prior to August 20, 2024, the datum of Well was 257.00 ft NAVD of 1988. However, was selected from a DEM with an accuracy of 4.3 ft.
COOPERATION - Cabot Water.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 89.78 ft below land surface datum, Jan 11, 1999: lowest water level, 105.46 ft below land surface datum, Jan 9, 2010.