USGS Water-Year Summary 2024
01435000 NEVERSINK RIVER NEAR CLARYVILLE, NY
LOCATION - Lat 41°53'23.8", long 74°35'23.3" referenced to North American Datum of 1983, Sullivan County, NY, Hydrologic Unit 02040104, on left bank 50 ft downstream from covered bridge, 300 ft upstream from small tributary, 2.2 mi downstream from confluence of East and West Branches, and 2.2 mi southwest of Claryville.
DRAINAGE AREA - 66.6 mi².
REVISIONS HISTORY - WDR NY-75-1: Gage datum. WDR NY-82-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1937 to May 1949, July 1951 to current year. Prior to July 1951, published as "at Halls Mills near Curry" (station 01435500).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,522.37 ft above NGVD of 1929 and 1,521.67 ft above NAVD of 1988. Prior to Oct. 1, 1974, at datum 6.00 ft higher. Oct. 1, 1974 to Sept. 30, 1979 at datum 5.00 ft higher. November 1937 to May 1949, at site 1.3 mi downstream at elevation 1,470 ft above NGVD of 1929, from topographic map.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Nov. 25, 1950, reached a stage of about 15.0 ft, present datum, from floodmarks, discharge, 23,400 ft³/s, from slope-area measurement of peak flow.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 20,900 ft³/s, Aug. 28, 2011, gage height, 14.64 ft; minimum discharge, 6.8 ft³/s, Sept. 24, 25, 1964.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: January 2012 to current year. SPECIFIC CONDUCTANCE: January 2020 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 - WATER TEMPERATURE: Maximum, 23.9 °C, July 21, 2019; minimum, -0.1 °C, Feb. 18, 2013, several days during 2014, 2020 winter periods and Feb. 3, 2023. SPECIFIC CONDUCTANCE: Maximum, 56 uS/cm at 25 °C, Mar. 2, June 29, 2021; minimum, 13 uS/cm at 25 °C, Apr. 13, 2020, Aug. 23, 2021, Oct. 26, 27, 2021, Apr. 8, 2022, Dec. 7, 2022.