USGS Water-Year Summary 2021
01436000 NEVERSINK RIVER AT NEVERSINK, NY
LOCATION - Lat 41°49'12", long 74°38'08" referenced to North American Datum of 1983, Sullivan County, NY, Hydrologic Unit 02040104, on right bank at downstream end of outlet channel, 1,650 ft downstream from Neversink Dam and State Highway 55, 2.0 mi southwest of Neversink, and 2.6 mi upstream from Wynkoop Brook.
DRAINAGE AREA - 92.6 mi².
- WDR NY-72-1: 1961 (M), 1968 (M). WDR NY-82-1: Drainage area.
PERIOD OF RECORD - October 1941 to current year.
GAGE - Water-stage recorder and concrete control. Datum of gage is 1,255.24 ft above NGVD of 1929 (levels by Board of Water Supply, City of New York) and 1,253.99 ft above NAVD of 1988. Prior to Jan. 17, 1953, at site 650 ft downstream at datum 0.20 ft lower. Jan. 17, 1953 to Apr. 16, 1954, at present site at datum 0.41 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, since construction of Neversink Reservoir in 1953, 12,300 ft³/s, Apr. 3, 2005, gage height, 12.99 ft, outside gage height was about 14.8 ft, from floodmark, from rating curve extended above 6,000 ft³/s; no flow for all or part of each day Sept. 22-24, Oct. 26-29, 1954.
EXTREMES FOR PERIOD PRIOR TO REGULATION - Maximum discharge, prior to construction of Neversink Reservoir in 1953, 22,300 ft³/s, Nov. 25, 1950, gage height, 11.23 ft, site and datum then in use, from rating curve extended above 2,600 ft³/s on basis of contracted-opening and critical-depth measurements of peak flow; maximum gage height, 11.65 ft, Sept. 27, 1942, site and datum then in use.
PERIOD OF RECORD - SPECIFIC CONDUCTANCE: December 2019 to current year. WATER TEMPERATURE: July 2019 to current year.
INSTRUMENTATION - A continuous water-quality monitor with water temperature and specific conductance provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 36 uS/cm at 25 °C, Sept. 2, 2020; minimum, 7 uS/cm at 25 °C, Apr. 13, 2020. WATER TEMPERATURE: Maximum, 13.4 °C, Oct. 10, 2019; minimum, 0.9 °C, Feb. 29, 2020.