CLARK 20
U.S. Geological Survey
Located in Clark County, Indiana, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).
Well Construction
| Depth | Description | |
|---|---|---|
| -3.0-80.0 ft | 2.0 in diameter pvc or plastic casing | |
| 80.0-100.0 ft | 2.0 in diameter pvc, fbrgls/plst screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-5.0 ft | Soil | Soil |
| 5.0-15.0 ft | Clay, some Sand | Clay, some Sand |
| 15.0-30.0 ft | Sand & Silt | Sand & Silt |
| 30.0-38.0 ft | Sand & Gravel | Sand & Gravel |
| 38.0-39.0 ft | Sand | Sand |
| 39.0-80.0 ft | Sand & Gravel | Sand & Gravel |
| 80.0-90.0 ft | Gravel | Gravel |
| 90.0-97.0 ft | Sand | Sand |
| 97.0-100.0 ft | Clay | Clay |
| 100.0-122.0 ft | Sand | Sand |
| 122.0-122.0 ft | Rock | Rock |
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Agency U.S. Geological Survey Site Name CLARK 20 Site Number 382156085382401 Site Type WELL Lat/Long (NAD83) 38.3654, -85.64 Well Depth 100.65 Feet Elevation (NAVD88) 453.76 ft Latitude 38.36544443999999742800355307 Longitude -85.64000000000000056843418861 Local Aquifer Name Pleistocene Series (None) National Aquifer Name Sand and gravel aquifers (glaciated regions) (N100GLCIAL) Aquifer Type UNCONFINED 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 35.63 33.96 8.75 2013-06-18 2025-04-17 4171 11.8 32.42 61.54 Statistics Calculated 2025-04-18 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 33.80 33.80 33.76 33.34 33.02 27.73 26.79 11 11 Feb 34.17 34.13 33.89 32.79 28.67 22.77 22.00 11 11 Mar 33.77 33.69 33.26 32.78 31.25 26.33 25.30 11 11 Apr 34.87 34.75 33.92 32.58 27.20 26.42 26.24 11 11 May 34.79 34.70 34.30 33.52 32.53 29.73 29.12 11 11 Jun 35.05 35.02 34.85 34.18 33.85 33.46 33.35 12 12 Jul 35.15 35.09 34.90 34.28 33.87 32.83 32.44 12 12 Aug 35.07 35.01 34.87 34.50 34.20 33.88 33.81 12 12 Sep 35.18 35.13 34.81 34.40 34.09 33.01 32.59 12 12 Oct 35.20 35.13 34.81 34.37 34.05 33.83 33.76 12 12 Nov 34.70 34.66 34.51 34.32 33.86 31.99 31.31 12 12 Dec 34.54 34.52 34.20 33.96 33.61 29.38 28.95 11 11 Statistics Calculated 2025-04-18 -
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