USGS Water-Year Summary 2024
404931073382101 N 110. 1
Northern Atlantic Coastal Plain aquifer system
Lloyd Aquifer
LOCATION - Lat 40°49'31", long 73°38'21" referenced to North American Datum of 1927, Nassau County, NY, Hydrologic Unit 02030201, at Scudders Lane and Motts Cove Road, Glenwood Landing.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 519 ft. Upper casing diameter 16 in; top of first opening 445 ft, bottom of last opening 515 ft.
PERIOD OF RECORD - January 1946 to April 1948, March 1952, May 1955, May 1957, March 1961, January 1965, December 1970 to March 1999, and March 2002 to current year. Unpublished records for 1946-48, 1952, 1955, 1961, 1965, and 1970-75 are available in files of the U.S. Geological Survey.
GAGE - Water-level recorder installed December 1986; 15-minute recording interval. Periodic manual measurements made by USGS personnel.
EXTREMES FOR PERIOD OF RECORD - Highest water level measured, 27.99 ft above sea level, December 15, 1970; lowest recorded, 10.58 ft below sea level, August 7, 1999.