USGS Water-Year Summary 2024
403455074514801 190276 Environmental Ctr 1 Obs NJ Permit Number 24-25826
Early Mesozoic basin aquifers
Stockton Formation
LOCATION - Lat 40°34'38", long 74°51'39" referenced to North American Datum of 1927, Clinton Township, Hunterdon County, NJ, Hydrologic Unit 02030105, at the Hunterdon County Arboretum, Rt. 31.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 175 ft. Upper casing diameter 6 in; top of first opening 55 ft, bottom of last opening 175 ft. Drilled observation well.
DATUM - Land-surface datum is 170.4 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of casing, 1.36 ft above land-surface datum, Aug. 8, 2002 to present.
PERIOD OF RECORD - March 1991 to current year.
GAGE - Water-level recorder with telemetry.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 8.44 ft below land surface datum, Mar 29, 1994; lowest, 13.46 ft below land surface datum, Sep 3, 2008.