Local number, Ro-543, at Rockland Lake NY
U.S. Geological Survey
Located in Rockland County, New York, this groundwater monitoring location is associated with a water well in the Early Mesozoic basin aquifers.
Well Construction
| Depth | Description | |
|---|---|---|
| -2.3-20.4 ft | 6.0 in diameter steel casing | |
| 22.0-50.0 ft | 6.0 in diameter screen | |
| 62.0-118.0 ft | 6.0 in diameter screen |
| Depth | Lithology | Description |
|---|---|---|
| 20.4-None ft | Mudstone | Mudstone |
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Agency U.S. Geological Survey Site Name Local number, Ro-543, at Rockland Lake NY Site Number 410853073554001 Site Type WELL Lat/Long (NAD83) 41.148, -73.9277 Well Depth 153 Feet Elevation (NAVD88) 159.06 ft Latitude 41.148 Longitude -73.9276944444445 Local Aquifer Name Brunswick Formation (None) National Aquifer Name Early Mesozoic basin aquifers (N300ERLMZC) Aquifer Type CONFINED 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 10.70 7.17 4.52 2005-10-01 2026-01-20 7318 20.2 8.46 0.0 Statistics Calculated 2026-01-22 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 8.45 8.20 7.03 6.82 6.26 5.47 5.34 20 20 Feb 8.69 8.46 6.98 6.70 6.30 5.88 5.67 20 20 Mar 7.19 7.14 6.81 6.05 5.64 5.54 5.27 20 20 Apr 7.52 7.45 6.80 6.23 5.87 5.54 5.42 20 20 May 7.49 7.43 7.04 6.70 6.26 5.86 5.46 20 20 Jun 8.40 8.22 7.65 7.35 7.04 6.24 5.98 20 20 Jul 9.29 8.84 8.28 7.90 7.39 7.11 6.98 20 20 Aug 9.70 9.22 8.71 8.36 7.45 6.96 6.93 20 20 Sep 9.78 9.70 9.21 8.75 7.57 6.67 6.16 20 20 Oct 9.88 9.68 9.18 8.57 7.17 6.44 6.02 21 21 Nov 9.86 9.53 8.96 8.00 6.82 5.88 5.57 21 21 Dec 9.05 8.64 7.96 7.19 6.23 5.67 5.52 20 20 Statistics Calculated 2026-01-22 -
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