MWRD- Calumet Plant
Illinois State Water Survey
Located in Cook County, Illinois, this groundwater monitoring location is associated with a water well in the Cambrian-Ordovician aquifer system.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-614.0 ft | 12.0 in diameter steel 50# casing | |
| 614.0-1684.0 ft | 12.0 in diameter open hole - no screen screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-55.0 ft | unknown | drift |
| 55.0-490.0 ft | unknown | Silurian Dolomite |
| 490.0-606.0 ft | unknown | Maquoketa Shale |
| 606.0-935.0 ft | unknown | Galena-Platteville |
| 935.0-1065.0 ft | unknown | St. Peter Sandstone |
| 1065.0-1490.0 ft | unknown | Knox |
| 1490.0-1669.0 ft | unknown | Ironton-Galesville Sandstone |
| 1669.0-1684.0 ft | unknown | Eau Claire |
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Agency Illinois State Water Survey Site Name MWRD- Calumet Plant Site Number P37395 Site Type WELL Lat/Long (WGS84) 41.6673, -87.6101 Well Depth 1684 Feet Elevation (NAVD88) 589.72 ft Latitude 41.66726 Longitude -87.610055 Local Aquifer Name St. Peter and Ironton-Galesville Sandstones (None) National Aquifer Name Cambrian-Ordovician aquifer system (S300CAMORD) Aquifer Type CONFINED Water-Level Well Type Trend Water-Level Well Characteristics Known 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 507.30 447.83 359.19 1968-10-17 2025-10-08 5676 57.0 365.78 75.758 Statistics Calculated 2026-01-10 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 498.30 494.37 480.06 446.58 416.56 362.95 360.36 32 32 Feb 498.09 493.68 481.12 448.38 414.77 362.80 360.16 31 31 Mar 496.69 492.06 479.00 444.93 400.51 362.96 359.94 33 33 Apr 495.97 493.41 482.75 448.06 418.97 362.92 361.31 31 31 May 495.32 492.91 481.12 447.76 390.96 362.99 360.98 33 33 Jun 495.21 493.23 484.88 450.14 413.43 363.04 360.80 31 31 Jul 497.12 493.44 483.19 448.45 371.59 363.05 360.84 33 33 Aug 498.82 494.24 478.78 447.46 378.80 363.03 360.79 32 32 Sep 500.38 497.07 486.65 448.11 378.07 363.15 360.88 28 28 Oct 500.70 496.64 481.20 442.31 366.35 363.38 360.98 32 32 Nov 502.88 495.77 485.35 447.26 372.64 363.45 360.91 33 33 Dec 507.30 495.01 487.50 449.38 415.64 363.13 360.68 31 31 Statistics Calculated 2026-01-10 -
Operated in cooperation with:
