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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.
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USGS Water-Year Summary 2024
421653088370902 MARN-10-03
Sand and gravel aquifers (glaciated regions)
Quaternary System
Quaternary System
LOCATION - Lat 42°16'52.96", long 88°37'09.29" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 NW 1/4 sec.23, T.44 N., R.5 E., McHenry County, IL, Hydrologic Unit 07090006, 28 feet northwest of groundwater well MARN-10-04 (421653088370903), 49 feet southwest of River Road, 300 feet west of intersection of River Road and Elizabeth Street, 0.5 miles west of Route 23, 0.3 miles east of Tributary to Kishwaukee River, 1.0 mile north of Kishwaukee River, and 2.3 miles northwest of Marengo. Owner: Illinois State Geological Survey.
REVISIONS HISTORY - Revisions: Land-surface datum was updated to 828.02 ft NAVD88 on May 30, 2023, as determined by a GNSS Level II survey. Land-surface datum was previously published as 828 ft NAVD88 (furnished). Discrete water-level measurements prior to May 30, 2023, are referenced to the original datum.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 160 ft. Upper casing diameter 2 in; top of first opening 155 ft, bottom of last opening 160 ft. Well-casing includes 2-inch schedule 40 PVC pipe, 5.5 in. diameter borehole sealed with benseal grout, observation well.
DATUM - Land-surface datum is 828.02 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing; east side file mark, 3.08 ft above land-surface datum, May. 2, 2011 to present; Top of PVC casing; east side file mark, 831.08 ft above land-surface datum, May. 2, 2011 to present.
PERIOD OF RECORD -
GROUND-WATER LEVELS: May 2011 to current. Prior to May 2011,
observation well readings available from the Illinois State Geological Survey.
GROUND-WATER LEVELS: May 2011 to current. Prior to May 2011,
observation well readings available from the Illinois State Geological Survey.
GAGE - Water level recorder and satellite telemeter.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 22.39 ft below land-surface datum, June 5, 2019; lowest, 33.38 ft below land-surface datum, January 24, 2013.
