MA-CGW 138R CHATHAM, MA
U.S. Geological Survey
Located in Barnstable County, Massachusetts, this groundwater monitoring location is associated with a water well in the Sand and gravel aquifers (glaciated regions).
Well Construction
| Depth | Description | |
|---|---|---|
| -2.64-39.28 ft | 2.0 in diameter other material casing | |
| 35.28-38.07 ft | 2.0 in diameter pvc, fbrgls/plst screen |
| Depth | Lithology | Description |
|---|---|---|
| 0.0-7.0 ft | Other | Other |
| 7.0-22.0 ft | Sand & Gravel | Sand & Gravel |
| 22.0-38.0 ft | Sand & Gravel | Sand & Gravel |
| 38.0-39.28 ft | Sand & Silt | Sand & Silt |
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Agency U.S. Geological Survey Site Name MA-CGW 138R CHATHAM, MA Site Number 414101070011001 Site Type WELL Lat/Long (NAD83) 41.6836, -70.0194 Well Depth 38.07 Feet Elevation (NAVD88) 37.22 ft Latitude 41.6836111111111 Longitude -70.0194444444444 Local Aquifer Name Outwash (None) National Aquifer Name Sand and gravel aquifers (glaciated regions) (N100GLCIAL) Aquifer Type UNCONFINED Water-Level Well Type Trend Water-Level Well Characteristics Background 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 29.56 27.23 24.12 1962-11-29 2026-02-20 4420 63.2 28.36 11.67 Statistics Calculated 2026-02-22 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 29.40 28.70 28.05 27.41 26.86 26.09 25.44 63 63 Feb 29.14 28.49 27.89 27.17 26.36 25.60 25.30 58 58 Mar 28.94 28.06 27.50 26.64 25.92 25.36 24.86 57 57 Apr 28.95 27.65 27.20 26.49 25.48 24.78 24.12 63 63 May 28.91 27.69 26.98 26.27 25.49 24.81 24.33 59 59 Jun 27.99 27.74 27.17 26.61 25.71 25.23 24.31 60 60 Jul 28.44 28.18 27.59 27.02 26.22 25.53 24.70 61 61 Aug 29.23 28.58 27.98 27.45 26.75 26.22 25.16 59 59 Sep 29.56 28.85 28.38 27.74 27.18 26.76 25.57 59 59 Oct 29.28 28.94 28.58 27.88 27.41 26.97 25.48 62 62 Nov 29.28 28.79 28.49 27.84 27.32 26.79 24.76 60 60 Dec 29.29 28.79 28.26 27.62 27.11 26.58 25.12 59 59 Statistics Calculated 2026-02-22 -
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