USGS Water-Year Summary 2024
421036088054501 43N10E-29.6e1 (Deer Park)
Sand and gravel aquifers (glaciated regions)
Quaternary System
LOCATION - Lat 42°10'36.35", long 88°05'44.94" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 NW 1/4 sec.29, T.43 N., R.10 E., Lake County, IL, Hydrologic Unit 07120006,
in middle of Village of Deer Park Administration building property, under large windmill, 100 feet west of large barn. Site removed 7/5/2016 and equipment relocated to South Barrington Well.
Site was reinstalled on Sept. 29, 2020 using equipment from North Barrington Well.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 169.7 ft. Upper casing diameter 2 in; top of first opening 165 ft, bottom of last opening 170 ft.
DATUM - Land-surface datum is 875.39 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 0.24 ft below land-surface datum, Jul. 2, 2007 to Jun. 19, 2014; File mark on top of PVC well stickup west side, 2.45 ft above land-surface datum, Jun. 19, 2014 to Sep. 29, 2020; Filemarks, top of PVC well casing, 2.36 ft above land-surface datum, Sep. 29, 2020 to present.
PERIOD OF RECORD - GROUND-WATER LEVELS: April 2014 to July 5, 2016; September 29, 2020-Present
GAGE - Water level recorder and satellite telemeter. Land-surface datum is 875.39 ft. above North American Vertical Datum of 1983.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 142.08 ft below land-surface datum, April 11, 2021; lowest, 154.75 ft below land-surface datum, August 26, 2014 and September 14, 2023.