USGS Water-Year Summary 2023
410316071535501 S 48579. 1
Northern Atlantic Coastal Plain aquifer system
Glacial Aquifer, Upper
LOCATION - Lat 41°03'17.5", long 71°53'52.1" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at north side of Montauk Point State Parkway (State Route 27), adjacent to intersection with Old Montauk Highway, Montauk. Located at Montauk State park Horse Stables, near sign.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 66 ft. Upper casing diameter 6 in; top of first opening 53 ft, bottom of last opening 56 ft.
PERIOD OF RECORD - January 1974 to current year. Unpublished records for January 1974 to September 1983 are available in files of the U.S. Geological Survey.
GAGE - Water-level recorder installed February 2017; 15-minute recording intervals. Periodic manual measurements by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 5.16 ft NGVD29, April 1, 2010; lowest measured, 2.34 ft above NGVD29, July 21, 2011.