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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2025
400210074031001 290503 Mantoloking 6 Obs NJ Permit Number 29-01325
Northern Atlantic Coastal Plain aquifer system
Englishtown Formation
Englishtown Formation
LOCATION - Lat 40°02'10.9", long 74°03'08.5" referenced to North American Datum of 1983, Mantoloking Borough, Ocean County, NJ, Hydrologic Unit 02040301, Bay Ave. GPS Adress: 1309 Bay Avenue Mantoloking, NJ 08738.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 906 ft. Upper casing diameter 8 in; top of first opening 845 ft, bottom of last opening 906 ft. Drilled artesian well.
DATUM - Land-surface datum is 5 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP EDGE OF 1 3/4 INCH DIAMETER HOLE IN CENTER, 2.0 ft above land-surface datum, Oct. 28, 1983 to Oct. 29, 1983; TOP OF 1 INCH STEEL PLATE AT 1 INCH PLUG, 1.5 ft above land-surface datum, Mar. 8, 1984 to May 2, 1984; Top of shelf, 2.4 ft above land-surface datum, Oct. 28, 1988 to Jan. 14, 2014; Top of 6 inch steel casing, 3.8 ft above land-surface datum, Jan. 13, 2014 to present.
PERIOD OF RECORD - October 1983 to current year.
GAGE - Water-level recorder.
REMARKS - Water level is affected by tidal fluctuation and nearby pumping.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 52.13 ft below land surface datum, May 19, 2010; lowest, 207.49 ft below land surface datum, Oct 31, 1987.
