MTOW-6 (Mason Tree Farm)
Illinois State Water Survey
Located in Mason County, Illinois, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-40.5 ft | 2.0 in diameter pvc casing | |
| 40.5-None ft | 2.0 in diameter slo-pvc, 0.010 screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-2.0 ft | unknown | sand, drk brown, silty |
| 2.0-15.0 ft | unknown | sand, brown, medium |
| 15.0-46.0 ft | unknown | sand, tan, medium to coarse |
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Agency Illinois State Water Survey Site Name MTOW-6 (Mason Tree Farm) Site Number P360672 Site Type WELL Lat/Long (WGS84) 40.3132, -89.902 Well Depth 45.5 Feet Elevation (NAVD88) 494.26 ft Latitude 40.313176 Longitude -89.902026 Local Aquifer Name Mahomet Aquifer (None) National Aquifer Name Sand and gravel aquifers (glaciated regions) (N100GLCIAL) Aquifer Type UNCONFINED 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 21.90 17.46 10.68 1995-03-01 2025-04-21 5202 30.1 19.62 10.00 Statistics Calculated 2025-04-22 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 20.74 20.74 19.71 18.23 17.26 16.05 15.55 14 14 Feb 21.23 20.23 18.40 16.99 16.10 14.83 10.94 19 19 Mar 20.04 19.60 18.31 17.93 16.35 15.43 15.22 20 20 Apr 20.29 19.63 17.99 17.49 16.10 14.57 11.65 29 29 May 19.06 18.53 17.84 17.25 15.89 13.76 12.25 26 26 Jun 19.71 18.72 17.91 16.84 14.46 13.11 11.74 30 30 Jul 20.38 19.65 18.28 16.81 14.29 13.04 10.73 30 30 Aug 21.50 20.41 18.99 17.03 15.12 13.89 11.74 30 30 Sep 21.90 21.10 19.03 17.69 15.84 14.26 12.88 28 28 Oct 21.81 20.73 19.24 17.70 16.26 15.74 15.14 26 26 Nov 21.37 20.62 19.22 17.85 16.46 15.32 11.78 21 21 Dec 21.48 20.37 19.15 17.92 16.90 15.60 14.39 23 23 Statistics Calculated 2025-04-22 -
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