USGS Water-Year Summary 2023
422803087475305 46N12E-14.6g5 (Zion Well #5)
Sand and gravel aquifers (glaciated regions)
Quaternary System
LOCATION - Lat 42°28'05.2", long 87°47'58.3" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 NW 1/4 sec.14, T.46 N., R.12 E., Lake County, IL, Hydrologic Unit 04040002, at Illinois Beach State Park, northern unit, Owner: U.S. Geological Survey.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 21.8 ft. Upper casing diameter 1 in; top of first opening 16.6 ft, bottom of last opening 21.6 ft.
DATUM - Land-surface datum is 586 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of PVC casing; notch on west side, 2.85 ft above land-surface datum, Jun. 29, 2010 to present.
PERIOD OF RECORD -
GROUND-WATER LEVELS: September 2010 to October 2019.
GAGE - Water level recorder and radio telemetry. Ground water levels affected by regional pumping.
EXTREMES FOR PERIOD OF RECORD - Highest water level, -0.12 ft below land-surface datum, April 19, 2013; lowest, 6.50 ft below land-surface datum, November 30, December 5, 6, and 8, 2012.