USGS Water-Year Summary 2024
410431074395801 370204 Sparta Twp 6 Obs NJ Permit Number 22-28915-1
Sand and gravel aquifers (glaciated regions)
Stratified Drift
LOCATION - Lat 41°04'49", long 74°39'32" referenced to North American Datum of 1927, Sparta Township, Sussex County, NJ, Hydrologic Unit 02040105, White Lake Rd., Germany Flats.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 143 ft. Upper casing diameter 6 in; top of first opening 123 ft, bottom of last opening 143 ft. Drilled observation well.
DATUM - Land-surface datum is 621.7 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of base of locking cap, 2.55 ft above land-surface datum, May 20, 2009 to present.
PERIOD OF RECORD - August 1991 to September 1993, May 1995 to current year.
GAGE - Water-level recorder.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 30.53 ft below land surface datum, Sep 30, 2011; lowest, 56.09 ft below land surface datum, Nov 19, 2001.