PROVISIONAL DATA SUBJECT TO REVISION
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Site Information
LOCATION.--Lat 41°55'13.5", long
74°34'27.8" referenced to North American Datum of
1983, Sullivan County, NY, Hydrologic Unit 02040104, on left
bank about 50 ft upstream from bridge on County Highway 157 in
Claryville.
DRAINAGE AREA.--33.8 mi².
PERIOD OF RECORD.--July 1991 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 1,615.82 ft above NAVD of 1988.
REMARKS.--Diversion upstream from station to maintain lake volume at Frost Valley YMCA camp. Excess lake water is diverted back into the river upstream from station.
Water Years 2014-21: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,600 ft³/s, Aug. 28, 2011, gage height, 15.38 ft, from rating curve extended above 3,400 ft³/s on basis of runoff comparisons with nearby stations; minimum discharge, 5.9 ft³/s, result of freezeup, Mar. 14, 1993; minimum gage height, 3.61 ft, Aug. 27, 2005.
PERIOD OF RECORD1.-- SPECIFIC CONDUCTANCE: January 2020 to current year. WATER TEMPERATURE: January 2020 to current year.
INSTRUMENTATION1.--A continuous water-quality monitor with water temperature and specific conductance provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF DAILY RECORD1.--SPECIFIC CONDUCTANCE: Maximum, 42 uS/cm at 25 °C, Mar. 5, 2021; minimum, 14 uS/cm at 25 °C, Dec. 25, 2020, Sept. 23, 24, 2021. WATER TEMPERATURE: Maximum, 24.7 °C, July 27, 2020, June 30, 2021; minimum, 0.0 °C, on many days during winter periods.
1 Water-Quality Records
DRAINAGE AREA.--33.8 mi².
PERIOD OF RECORD.--July 1991 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 1,615.82 ft above NAVD of 1988.
REMARKS.--Diversion upstream from station to maintain lake volume at Frost Valley YMCA camp. Excess lake water is diverted back into the river upstream from station.
Water Years 2014-21: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,600 ft³/s, Aug. 28, 2011, gage height, 15.38 ft, from rating curve extended above 3,400 ft³/s on basis of runoff comparisons with nearby stations; minimum discharge, 5.9 ft³/s, result of freezeup, Mar. 14, 1993; minimum gage height, 3.61 ft, Aug. 27, 2005.
PERIOD OF RECORD1.-- SPECIFIC CONDUCTANCE: January 2020 to current year. WATER TEMPERATURE: January 2020 to current year.
INSTRUMENTATION1.--A continuous water-quality monitor with water temperature and specific conductance provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF DAILY RECORD1.--SPECIFIC CONDUCTANCE: Maximum, 42 uS/cm at 25 °C, Mar. 5, 2021; minimum, 14 uS/cm at 25 °C, Dec. 25, 2020, Sept. 23, 24, 2021. WATER TEMPERATURE: Maximum, 24.7 °C, July 27, 2020, June 30, 2021; minimum, 0.0 °C, on many days during winter periods.
1 Water-Quality Records
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