CHAM-07-07 (Seymour)
Illinois State Water Survey
Located in Champaign County, Illinois, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).
Well Construction
| Depth | Description | |
|---|---|---|
| - ft | none casing | |
| - ft | none screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-4.0 ft | unknown | clay, black (topsoil) |
| 4.0-8.0 ft | unknown | clay, brown |
| 6.0-8.0 ft | unknown | sand, brown, poorly sorted; with clay |
| 8.0-13.0 ft | unknown | clay, brown ,silty pebbly (till) |
| 13.0-40.0 ft | unknown | clay, gray, silty pebbly (till) |
| 40.0-43.0 ft | unknown | sand, dark gray, coarse; poorly sorted material includes very fine sand to gravel; this sand interval continued "caving-in" and brought about the use of 45' of temporary casing so the hole could be completed |
| 43.0-55.0 ft | unknown | clay, gray silty |
| 55.0-57.0 ft | unknown | silt, dark brown, clayey |
| 57.0-69.0 ft | unknown | clay, medium gray; with sand from overlying units? (till) |
| 69.0-91.0 ft | unknown | clay, medium dark gray, slightly sandy, minor amounts of granules (till) |
| 91.0-101.0 ft | unknown | sand, dark gray, medium to very coarse with very fine to fine gravel; coarser materials typically comprised of dark gray shale or light gray, angular fragments of limestone/dolomite |
| 101.0-104.0 ft | unknown | clay; (lithologic interpretation based on geophysical log) |
| 104.0-110.0 ft | unknown | sand; (lithtologic interpretation based on geophysical log) |
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Agency Illinois State Water Survey Site Name CHAM-07-07 (Seymour) Site Number P444867 Site Type WELL Lat/Long (NAD83) 40.1129, -88.4262 Well Depth 105 Feet Elevation (NAVD88) 700.11 ft Latitude 40.11291 Longitude -88.426226 Local Aquifer Name Glasford Aquifer (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 90.61 84.79 81.04 2008-03-24 2025-08-29 39614 17.4 85.64 45.45 Statistics Calculated 2026-01-11 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 Mar 88.63 87.31 85.83 84.33 82.89 82.10 82.02 16 16 Jun 87.76 86.86 85.42 83.84 82.73 81.40 81.36 13 13 Aug 90.34 90.13 86.94 85.61 84.15 81.87 81.79 10 10 Sep 89.83 89.42 87.14 85.82 83.45 83.02 82.86 15 15 Nov 89.23 88.88 87.61 85.20 84.09 82.18 82.09 12 12 Dec 88.44 88.38 86.66 85.70 83.16 81.94 81.87 11 11 Statistics Calculated 2026-01-11 -
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