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Water-Year Summary for Site 403040074144801

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Available Parameters
62611 Elevation, GW, NAVD88(Mean)  

Water year 2025: 2025-10-01 to 2026-09-30
 
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USGS Water-Year Summary 2025
403040074144801 R 131. 1
Northern Atlantic Coastal Plain aquifer system
Harbor Hill Terminal Moraine
LOCATION - Lat 40°30'40.1", long 74°14'48.7" referenced to North American Datum of 1983, Richmond County, NY, Hydrologic Unit 02030104, at southwest corner of Johnson Avenue and Craig Avenue, southernmost well, Tottenville, Staten Island.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 69 ft. Upper casing diameter 2 in; top of first opening 59 ft, bottom of last opening 64 ft.
DATUM - Land-surface datum is 57.98 ft above North American Vertical Datum of 1988. Measuring point: Top of casing, 0.18 ft below land-surface datum, 58.82 ft above National Geodetic Vertical Datum of 1929, Jul. 23, 2004 to Sep. 16, 2024; Top of casing, 0.18 ft below land-surface datum, 57.8 ft above North American Vertical Datum of 1988, Sep. 16, 2024 to present.
PERIOD OF RECORD - July 2004 to April 2015, June 2024 to current year.
GAGE - Water level recorder installed November 2005 to June 2007, October 2024 to current year. Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 8.35 ft above NGVD of 1929 (7.33 ft above NAVD of 1988), Feb. 19, 2010; lowest measured, 3.72 ft above NGVD of 1929 (2.70 ft above NAVD of 1988), Jan. 14, 2025.