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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
422803087475302 46N12E-14.6g2 (Zion well 2)
Cambrian-Ordovician aquifer system
Mount Simon Sandstone
Mount Simon Sandstone
LOCATION - Lat 42°28'05", long 87°47'58" 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 2,264 ft. Upper casing diameter 1.25 in; top of first opening 2,244 ft, bottom of last opening 2,264 ft. Slotted screen, observation, artesian.
DATUM - Land-surface datum is 586 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top coupling on pvc pipe, 2.67 ft above land-surface datum, Nov. 23, 1981, to present. Accuracy of datum is +/- 5 ft.
PERIOD OF RECORD -
GROUND-WATER LEVELS: September 2010 to current year. December 1981 to August 2010 (periodic).
GROUND-WATER LEVELS: September 2010 to current year. December 1981 to August 2010 (periodic).
GAGE - Water level recorder and radio telemetry. Ground water levels affected by regional pumping.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 160.59 ft below land-surface datum, March 8, 1982; lowest, 213.00 ft below land-surface datum, October 10, 2007.
