Click
to
hide
Water-Year
Summary
instructions
and
information
- 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.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2025
400210074031002 290504-- Mantoloking 17
Northern Atlantic Coastal Plain aquifer system
Magothy-Raritan-Potomac Aquifer Systems, Upper Aquifer
Magothy-Raritan-Potomac Aquifer Systems, 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. GPS Adress: 1309 Bay Avenue Mantoloking, NJ 08738.
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: Transfer MP created for migration, 0 ft above land-surface datum, Oct. 30, 1978 to Oct. 29, 1983; TOP EDGE OF CONCRETE BASE, 3.6 ft above land-surface datum, Oct. 28, 1983 to Jan. 14, 2014; EDGE OF METAL PLATE, 3.05 ft above land-surface datum, Oct. 28, 1998 to Jan. 14, 2014; Edge of 2 inch opening on top of steel covering on concrete block, 2.2 ft above land-surface datum, Oct. 31, 2013 to Jan. 14, 2014; 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.
REMARKS - Water level is affected by tidal fluctuation.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 22.70 ft below land surface datum, Oct 25, 1993; lowest, 53.73 ft below land surface datum, Sep 9, 2023.
