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Water-Year Summary for Site 01305500

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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.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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Available Parameters
00060 Discharge(Mean)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 40°46'01", long 72°59'37" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, on left bank 94 ft downstream from Montauk Highway in East Patchogue, 200 ft downstream from outlet of Swan Lake, and 1.2 mi upstream from mouth.
DRAINAGE AREA - 8.07 mi².
REVISIONS HISTORY - WDR NY-81-2: 1952-77 (M), 1978, 1979-80 (M). WDR-US-2009: Drainage area.
PERIOD OF RECORD - October 1946 to current year.
GAGE - Water-stage recorder and concrete control. Datum of gage is 2.84 ft above NGVD of 1929 and 1.79 ft above NAVD of 1988 (VERTCON).
REMARKS - Flow regulated at outlet of Swan Lake.
Water Years 2014-20: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 77 ft³/s, Aug. 24, 1990, gage height, 2.71 ft; maximum gage height, about 3.6 ft, Oct. 29, 2012, from high-water mark, result of storm tide; minimum discharge, 0.06 ft³/s, Sept. 2, 1964, gage height, 0.02 ft, result of regulation.