USGS Water-Year Summary 2023
365319089331001 Sikeston
Mississippi River Valley alluvial aquifer
Holocene Alluvium
LOCATION - Lat 36°53'17.6", long 89°33'09.9" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 sec.21, T.26 N., R.14 E., Scott County, MO, Hydrologic Unit 08020201,
REVISIONS HISTORY -
Revisions: Land-surface datum was updated to 310.34 ft NAVD88 on May 22, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published as 310 ft NAVD88 from topographic map. Discrete water-level measurements prior to May 22, 2023, are referenced to the original datum.
Data from Jan 01, 1985 to Jan. 23, 1986 from this well was published in Berkas and others, 1989 with the site id 365319089330501. The published water level data in this report are 2.50 ft lower than the approved data for this site because the Berkas and others report had water level data referenced to the measuring point which is 2.50 ft above land surface. Data is now referenced to land surface instead of the measuring point.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 310.34 ft above North American Vertical Datum of 1988. Measuring point: unknown, 2.5 ft above land-surface datum, Oct. 12, 1956 to present.
PERIOD OF RECORD - November 1, 1956 to present.
GAGE - November 1,1956 to November 6, 1980 - A-35 strip chart recorder. November 7, 1980 to April 27, 2000 - Stevens model 7001 digital recorder; April 27, 2000 to present telemetry DCP. November 1, 1956 to Februray 26, 2007 water level measuring device is float driven encoder. From February 27, 2007 to present, the water level measuring device is a vented, submersible pressure transducer.
COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR); Record from November 1, 1956 to April 27, 2000 furnished from MDNR.