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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
401654088212001 21N7E-13.4h1 (CHAM08-09A)
Sand and gravel aquifers (glaciated regions)
Quaternary System
Quaternary System
LOCATION - Lat 40°16'53.66", long 88°21'20.43" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NE 1/4 sec.13, T.21 N., R.7 E., Champaign County, IL, Hydrologic Unit 07130006, about 2 mi south of Fisher at Champaign County (Sangamon) Forest Preserve and 0.3 mi west of the Sangamon River. Local names: 21N7E-13.4h1 and CHAM08-09A. Owner: Illinois State Geological Survey.
REVISIONS HISTORY -
Revisions: Groundwater levels for the period Oct. 19, 2021, to July 26, 2021, were revised Mar. 7, 2022, because the incorrect measuring point was used.
Revisions: Groundwater levels for the period Oct. 19, 2021, to July 26, 2021, were revised Mar. 7, 2022, because the incorrect measuring point was used.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 265 ft. Upper casing diameter 2 in; top of first opening 259.5 ft, bottom of last opening 264.5 ft. Well-casing includes schedule 40 PVC pipe, 5.50 in. diameter borehole with bentonite seal, observation well.
DATUM - Land-surface datum is 713.88 ft above North American Vertical Datum of 1988. Measuring point: Top of PVC casing-south side; MP alt 716.71 NAVD88-measured by pcmills 11-19-09; ISGS GPS Land, 2.83 ft above land-surface datum, Aug. 12, 2008 to present; Top of PVC casing-south side; MP alt 716.71 NAVD88-measured by pcmills 11-19-09; ISGS GPS Land, 716.71 ft above land-surface datum, Aug. 12, 2008 to present.
PERIOD OF RECORD -
GROUND-WATER LEVELS: August 2008 to September 2009 by Illinois State Geological Survey (periodic measurements). October 2009 to March 2011 by U.S. Geological Survey (periodic measurements). Continuous record July 2011 to current.
GROUND-WATER LEVELS: August 2008 to September 2009 by Illinois State Geological Survey (periodic measurements). October 2009 to March 2011 by U.S. Geological Survey (periodic measurements). Continuous record July 2011 to current.
GAGE - Water-level recorder and satellite telemeter.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 43.40 ft below land-surface datum, Dec. 6, 2016; lowest, 59.03 ft below land-surface datum, July 31 and Aug. 1, 2012
