USGS Water-Year Summary 2023
384312090064701 3N9W-8.1b1 (MESD-GCD)
Sand and gravel aquifers (glaciated regions)
Quaternary System
LOCATION - Lat 38°43'11.4", long 90°06'47.5" referenced to North American Datum of 1983, in NE 1/4 SE 1/4 SE 1/4 sec.8, T.3 N., R.9 W., Madison County, IL, Hydrologic Unit 07140101, Local name, 3N9W-8.1b1, Owner: University of Illinois, Illinois State Water Survey.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 98.5 ft. Upper casing diameter 2 in; top of first opening 93 ft, bottom of last opening 98 ft. Hole depth: 105 ft. Well Depth 98.5 feet.
DATUM - Land-surface datum is 418 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of PVC casing-North Side, 2.92 ft above land-surface datum, Nov. 4, 2010, to present. Land-surface datum is 418 ft about NGVD 1929. Measuring point: Top coupling of PVC casing, west side, 2.92 ft above land-surface datum.
PERIOD OF RECORD -
GROUND-WATER LEVELS: August 1999 to current year by Illinois State Water Survey
(fragmentary). 1999 to current year available from the Illinois State Geological Survey.
December 2009 to September 2011 by U.S. Geological Survey (fragmentary).
Continuous record by USGS, September 2011 to September 2015.
GAGE - Water level recorder and satellite telemeter.
EXTREMES FOR PERIOD OF RECORD - Highest static water level, 12.44 ft below land-surface datum, Dec. 16, 2009; lowest recorded, 16.86 ft below land-surface datum, Jan. 24, 26, 2013.