USGS Water-Year Summary 2024
402151074525301 190251 Corsalo Rd TB 1 Obs NJ Permit Number 27-10124
Early Mesozoic basin aquifers
Passaic Formation
LOCATION - Lat 40°21'51", long 74°52'53" referenced to North American Datum of 1927, West Amwell Township, Hunterdon County, NJ, Hydrologic Unit 02040105, 1,100 ft east of the intersection of County Rt. 518 and Corsalo Rd.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 299 ft. Upper casing diameter 4 in; top of first opening 21.5 ft, bottom of last opening 299 ft. Drilled observation well.
DATUM - Land-surface datum is 405 ft above National Geodetic Vertical Datum of 1929. Measuring point: Transfer MP created for migration, 0 ft above land-surface datum, Jul. 5, 1989 to May. 2, 1995; TOP OF SHELTER SHELF, 2.5 ft above land-surface datum, May. 1, 1995 to Aug. 8, 2002; Top of casing, 2.35 ft above land-surface datum, Aug. 7, 2002 to present; TOP OF CASING, 2.38 ft above land-surface datum, Jul. 10, 2012 to present.
PERIOD OF RECORD - June 1989 to current year.
GAGE - Water-level recorder with telemetry.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 0.84 ft above land surface datum, 9/1/2021; lowest, 10.65 ft below land surface datum, Jan 1-2, 1999.