USGS Water-Year Summary 2021
401921089282102 22N3W-29.8a2 (MTH-17N)
Sand and gravel aquifers (glaciated regions)
LOCATION - Lat 40°19'21.4", long 89°28'21.4" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SW 1/4 sec.29, T.22 N., R.3 W., Tazewell County, IL, Hydrologic Unit 07130009, central gray-cased well in a cluster of three, 1 mi north of US 136 on Brownwood Road, about 1.5 mi northeast of Emden, and 0.5 mi south of Prairie Creek. Local names: MTH-17N, 22N3W-29.8a2, Owner: Illinois State Water Survey.
WELL CHARACTERISTICS - Depth 152 ft. Upper casing diameter 2 in; top of first opening 147 ft, bottom of last opening 152 ft. Well-casing includes schedule 40 PVC pipe, 7.75 in. diameter borehole with bentonite seal, observation well.
DATUM - Land-surface datum is 586 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of PVC casing, south side, measured PMills 07-27-10; ISWS reports est. 3 ft (Coop17A,1995), 2.95 ft above land-surface datum, Aug. 19, 1993 to present.
PERIOD OF RECORD -
GROUND-WATER LEVELS: December 1993 to current by Illinois State
Water Survey (fragmentary). July 2011 to current by U.S. Geological Survey.
GAGE - Water-level recorder and satellite telemeter.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 29.56 ft below land-surface datum, July 2, 2010; lowest, 37.29 ft below land-surface datum, July 30, 2018.