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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.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01432900 MONGAUP RIVER AT MONGAUP VALLEY, NY
LOCATION - Lat 41°40'05", long 74°46'50" referenced to North American Datum of 1983, Sullivan County, NY, Hydrologic Unit 02040104, on left bank about 400 ft upstream from bridge on State Highway 17B, and about 700 ft upstream from Creamery Brook, in Mongaup Valley.
DRAINAGE AREA - 76.6 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Occasional low-flow and/or miscellaneous discharge measurements, water years 1949, 1957-61, 1965, 1970, 1973-74. October 2002 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,068.40 ft above NAVD of 1988. Prior to Nov. 17, 2005, at site on opposite bank at same datum.
REMARKS - Water Years 2014-23: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 7,630 ft³/s, Apr. 3, 2005, gage height, 13.47 ft, from rating curve extended above 2,800 ft³/s on basis of contracted-opening measurement of peak flow; minimum discharge, 9.5 ft³/s, Sept. 24, 2005, gage height, 2.68 ft.
