Click
to
hide
Water-Year
Summary
instructions
and
information
- 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.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
422308088195601 9-MCH-S
Sand and gravel aquifers (glaciated regions)
Quaternary System
Quaternary System
LOCATION - Lat 42°23'07.7", long 88°19'56.1" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 NW 1/4 sec.17, T.45 N., R.8 E., McHenry County, IL, Hydrologic Unit 07120006, 25 ft. south of McCullom Lake Road, 36 ft. west of the Harrison-Benwell Park entrance, 0.1 mi. northwest of Harrison Elementary School, 0.8 mi. east of the town of Wonder Lake, 0.9 mi. east of Wonder Lake, and 1.9 mi. southeast of Ringwood and Route 31. Owner: McHenry County.
REVISIONS HISTORY - Revisions: Land-surface datum was updated to 863.52 ft NAVD88 on May 30, 2023, as determined by a GNSS Level II survey. Land-surface datum was previously published as 863.18 ft NAVD88 (furnished). Discrete water-level measurements prior to May 30, 2023, are referenced to the original datum.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 25.9 ft. Upper casing diameter 2 in; top of first opening 25.4 ft, bottom of last opening 25.9 ft. Well-casing includes 2-inch schedule 40 PVC pipe, 8 in. diameter borehole with bentonite seal, observation well.
DATUM - Land-surface datum is 863.52 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing; high point marked, 2.74 ft above land-surface datum, Oct. 1, 2008 to present.
PERIOD OF RECORD -
GROUND-WATER LEVELS: February 2009 to current.
GROUND-WATER QUALITY:
CHEMICAL: Water year 2010, 2012.
WATER TEMPERATURE: April 2011 to April 2016.
SPECIFIC CONDUCTANCE: April 2011 to April 2016.
GROUND-WATER LEVELS: February 2009 to current.
GROUND-WATER QUALITY:
CHEMICAL: Water year 2010, 2012.
WATER TEMPERATURE: April 2011 to April 2016.
SPECIFIC CONDUCTANCE: April 2011 to April 2016.
GAGE - Water-level/water-quality recorder and satellite telemeter.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
EXTREMES FOR PERIOD OF RECORD -
GROUND-WATER LEVELS: Highest water level, 4.79 ft below land-surface datum, May 18, 2020; lowest, 16.01 ft below land-surface datum, February 16 , 2022.
WATER TEMPERATURE: Maximum, 15.1oC, Several days during 2012; Minimum, 9.6 oC, Several days during 2011, and 2014-2015.
SPECIFIC CONDUCTANCE: Maximum, 2,590 uS/cm at 25oC, November 20-21, 2015; Minimum, 1,290 uS/cm at 25oC, April 26, 2011.
GROUND-WATER LEVELS: Highest water level, 4.79 ft below land-surface datum, May 18, 2020; lowest, 16.01 ft below land-surface datum, February 16 , 2022.
WATER TEMPERATURE: Maximum, 15.1oC, Several days during 2012; Minimum, 9.6 oC, Several days during 2011, and 2014-2015.
SPECIFIC CONDUCTANCE: Maximum, 2,590 uS/cm at 25oC, November 20-21, 2015; Minimum, 1,290 uS/cm at 25oC, April 26, 2011.
