USGS Water-Year Summary 2023
402739088524102 23N3E-9.7b2 (Bloomington MW4UD)
Sand and gravel aquifers (glaciated regions)
Quaternary System
LOCATION - Lat 40°27'39.04", long 88°52'41.38" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 SW 1/4 sec.9, T.23 N., R.3 E., McLean County, IL, Hydrologic Unit 07130009,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 31.8 ft. Upper casing diameter 2 in; top of first opening 26.7 ft, bottom of last opening 31.3 ft.
DATUM - Land-surface datum is 799.74 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing-East Side; Altitude surveyed 10/2/15, 2.80 ft above land-surface datum, Nov. 3, 2010 to present. Land-surface datum is 799.74 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing, east side at mark; Altitude survey 10/2/15, 2.80 ft above land-surface datum, Nov. 3, 2010 to present.
PERIOD OF RECORD -
GROUND-WATER LEVELS: Manual measurements November 2010 to current. Gage measurements November 2010 to October 2016.
GAGE - Water-level recorder.
EXTREMES FOR PERIOD OF RECORD -
WATER LEVEL: Maximum, 10.43 (ft), Aug. 16, 2012; minimum, 2.34 (ft), Dec. 28, 2015.