N 67. 1
U.S. Geological Survey
Located in Nassau County, New York, this groundwater monitoring location is associated with a water well in the Northern Atlantic Coastal Plain aquifer system.
Well Construction
No well construction data is available
| Depth | Lithology | Description |
|---|---|---|
| 0.0-50.5 ft | - | - |
| 50.5-54.3 ft | - | - |
| 54.3-690.3 ft | - | - |
| 690.3-750.9 ft | - | - |
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Agency U.S. Geological Survey Site Name N 67. 1 Site Number 403922073353501 Site Type WELL Lat/Long (NAD83) 40.6562, -73.5927 Well Depth 1052 Feet Elevation (NGVD29) 22.0 ft Latitude 40.6562222222222 Longitude -73.5926666666667 Local Aquifer Name Lloyd Aquifer (None) National Aquifer Name Northern Atlantic Coastal Plain aquifer system (S100NATLCP) Aquifer Type CONFINED 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 25.76 12.17 6.05 1946-12-05 2025-12-29 503 79.0 9.27 79.5 Statistics Calculated 2026-01-21 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 16.40 15.23 13.10 11.65 9.59 7.26 6.47 48 48 Feb 16.90 13.95 11.61 9.54 8.11 7.13 6.67 30 30 Mar 25.76 13.92 12.34 10.10 8.65 7.60 6.91 44 44 Apr 15.69 14.33 12.50 10.2 8.32 7.53 6.46 29 29 May 16.42 14.73 12.26 10.6 8.92 8.05 6.05 37 37 Jun 17.36 15.66 14.47 12.23 11.03 9.61 6.96 46 46 Jul 23.13 18.83 15.62 13.35 12.20 11.44 9.30 42 42 Aug 20.70 18.79 16.33 14.18 12.97 11.94 10.59 36 36 Sep 19.90 18.29 16.54 14.64 13.06 11.46 10.74 46 46 Oct 23.22 17.64 14.02 12.32 11.38 10.2 8.69 39 39 Nov 18.94 14.45 12.38 10.99 9.83 8.80 7.22 31 31 Dec 18.59 16.82 14.00 11.55 9.86 8.58 6.49 43 43 Statistics Calculated 2026-01-21 -
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