MG 225 Montgomery County Observation Well
U.S. Geological Survey
Located in Montgomery County, Pennsylvania, this groundwater monitoring location is associated with a water well in the Early Mesozoic basin aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| 0.0-78.0 ft | 12.0 in diameter steel casing | |
| 78.0-486.0 ft | other screen |
| Depth | Lithology | Description |
|---|---|---|
| 78.0-None ft | Sndstn & Shale | Sndstn & Shale |
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Agency U.S. Geological Survey Site Name MG 225 Montgomery County Observation Well Site Number 400808075210401 Site Type WELL Lat/Long (NAD83) 40.1362, -75.3507 Well Depth 486 Feet Elevation (NAVD88) 167.0 ft Latitude 40.1361666666667 Longitude -75.3506944444444 Local Aquifer Name Stockton Formation (None) National Aquifer Name Early Mesozoic basin aquifers (N300ERLMZC) Aquifer Type UNCONFINED Water-Level Well Type Surveillance 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 60.25 17.31 2.46 1956-08-15 2025-12-18 22401 69.3 16.57 57.58 Statistics Calculated 2026-02-21 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 54.05 42.80 28.51 16.45 10.77 8.36 6.61 65 65 Feb 51.12 42.48 27.04 16.40 10.56 8.01 6.69 65 65 Mar 41.44 36.58 26.37 15.85 10.28 7.38 6.54 65 65 Apr 44.95 34.14 22.24 14.57 9.66 8.25 5.39 64 64 May 49.25 34.67 25.11 17.32 10.86 9.11 6.76 64 64 Jun 52.50 39.42 24.17 17.03 11.25 9.09 6.93 64 64 Jul 55.35 43.39 26.84 19.33 11.79 10.0 8.11 63 63 Aug 58.57 44.99 34.72 20.50 12.33 9.90 7.13 65 65 Sep 58.57 46.36 35.91 20.10 13.37 9.38 6.34 64 64 Oct 59.25 46.13 36.30 19.65 12.61 10.59 7.32 65 65 Nov 58.19 46.07 35.49 20.51 13.12 10.0 7.03 65 65 Dec 54.89 46.61 31.43 17.98 11.30 9.06 6.21 64 64 Statistics Calculated 2026-02-21 -
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