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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
422803087475304 46N12E-14.6g4 (Zion well 4)
Cambrian-Ordovician aquifer system
Ironton-Galesville
Ironton-Galesville
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 1,203 ft. Upper casing diameter 1.25 in; top of first opening 1,186 ft, bottom of last opening 1,203 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, 2.73 ft above land-surface datum, Dec. 8, 1981 to present. Accuracy of datum is +/- 5 ft.
PERIOD OF RECORD -
GROUND-WATER LEVELS:September 2010 to October 2019. October 2006 to August 2010 (periodic), December 1998 to September 2006, November 1988 to September 1997, December 1981 to November 1988 (periodic).
GROUND-WATER LEVELS:September 2010 to October 2019. October 2006 to August 2010 (periodic), December 1998 to September 2006, November 1988 to September 1997, December 1981 to November 1988 (periodic).
GAGE - Water level recorder and radio telemetry. Ground water levels affected by regional pumping.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 200.28 ft. below land-surface datum, October 30, 2019; lowest, 238.23 ft below land-surface datum, March 1, 1986.
