45N5E-12.5h (HARV-09-01)
U.S. Geological Survey
Located in McHenry County, Illinois, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).
Well Construction
| Depth | Description | |
|---|---|---|
| 114.8-119.8 ft | pvc, fbrgls/plst screen |
No lithology data is available
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Agency U.S. Geological Survey Site Name 45N5E-12.5h (HARV-09-01) Site Number 422358088360201 Site Type WELL Lat/Long (NAD83) 42.3995, -88.6006 Well Depth 120.1 Feet Elevation (NAVD88) 942.0 ft Latitude 42.39954443999999966763425618 Longitude -88.60061939999999935935193207 Local Aquifer Name Quaternary System (None) National Aquifer Name Sand and gravel aquifers (glaciated regions) (N100GLCIAL) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Suspected / Anticipated Changes Water Quality Network Additional info Link 1 -
Activity Start Date Activity Start Time Characteristic Name Measure Value Units Detection Limit Value Type Sample Fraction Method Name Analytical Method System Sample Method ID Sample Method ID Context Sample Method Name Activity Type Code Data Provided By -
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How do we calculate statistics?
Overall Water Level Statistics (Depth to water, feet below land surface) Lowest Water Level Median Water Level Highest Water Level First Measurement Date Last Measurement Date Number of Measurements Years of Record Latest Value Latest Percentile 36.67 32.43 27.98 2009-09-11 2026-02-20 5941 16.4 35.17 16.67 Statistics Calculated 2026-02-21 Monthly Water Level Statistics (Depth to water, feet below land surface) Month Lowest Median 10th Percentile 25th Percentile 50th Percentile 75th Percentile 90th Percentile Highest Median Number of Measurements Years of Record Jan 36.47 36.02 33.98 33.17 31.50 29.92 29.53 16 16 Feb 36.12 35.79 33.72 32.95 31.47 29.98 29.97 16 16 Mar 35.67 34.93 33.20 32.08 30.93 29.38 29.15 16 16 Apr 34.17 33.89 32.32 31.49 30.75 29.37 29.14 16 16 May 34.39 33.54 32.61 31.62 30.71 28.87 28.57 16 16 Jun 34.80 34.13 33.25 31.93 30.66 29.20 28.96 16 16 Jul 34.46 34.36 33.85 31.53 30.30 29.93 29.81 16 16 Aug 34.71 34.68 33.84 32.23 30.88 29.79 29.43 16 16 Sep 35.50 35.12 33.65 32.43 31.13 29.97 29.85 17 17 Oct 35.86 35.31 34.08 33.14 31.84 29.56 28.94 17 17 Nov 35.89 35.49 34.12 32.81 31.93 29.76 28.94 17 17 Dec 36.24 35.76 34.12 32.91 31.93 29.90 29.36 17 17 Statistics Calculated 2026-02-21 -
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