USGS Water-Year Summary 2024
400210074031002 290504-- Mantoloking 17
Northern Atlantic Coastal Plain aquifer system
Magothy-Raritan-Potomac Aquifer System, Upper Aquifer
LOCATION - Lat 40°02'10.8", long 74°03'09.8" referenced to North American Datum of 1927, Mantoloking Borough, Ocean County, NJ, Hydrologic Unit 02040301, Bay Ave.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 1,369 ft. Upper casing diameter 8 in; top of first opening 1,263 ft, bottom of last opening 1,368 ft. Drilled artesian well.
DATUM - Land-surface datum is 5 ft above National Geodetic Vertical Datum of 1929. Measuring point: Top of 8 inch steel casing, 4.1 ft above land-surface datum, Jan. 13, 2014 to present.
PERIOD OF RECORD - October 1978 to current year.
GAGE - Water-level recorder.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 22.70 ft below land surface datum, Oct 25, 1993; lowest, 43.16 ft below land surface datum, Sep 29, 2015.