PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 41°54'12", long
74°48'46" referenced to North American Datum of 1983,
Sullivan County, NY, Hydrologic Unit 02040102, on right bank
0.4 mi upstream from State Highway 17 interchange 96 at
Livingston Manor, and 1.1 mi upstream from Little Beaver
Kill.
DRAINAGE AREA.--62.6 mi².
PERIOD OF RECORD.--August 1937 to September 1970, annual maximum only--1971-74, August 2018 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 1,433.14 ft above NAVD of 1988. Prior to August 2018, gage at same location at datum 2.00 ft higher.
REMARKS.--Water Years 2018-23: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 15,700 ft³/s, July 28, 1969, gage height, 11.03 ft, datum then in use, from rating curve extended above 3,200 ft³/s on basis of slope-area measurement of peak flow; minimum discharge, 4.5 ft³/s, Sept. 23, 1964; minimum gage height, -0.26 ft Oct. 17, 1969, datum then in use.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Jan. 19, 1996, reached a stage of 7.41 ft, datum then in use, discharge, 6,790 ft³/s. Flood of Sept. 18, 2004, reached a stage of 8.50 ft, datum then in use.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: August 2018 to current year.
INSTRUMENTATION1.--Water-temperature recorder provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: Maximum, 26.4 °C, Aug. 4, 2022; minimum, 0.0 °C on many days during winter periods.
1 Water-Quality Records
DRAINAGE AREA.--62.6 mi².
PERIOD OF RECORD.--August 1937 to September 1970, annual maximum only--1971-74, August 2018 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 1,433.14 ft above NAVD of 1988. Prior to August 2018, gage at same location at datum 2.00 ft higher.
REMARKS.--Water Years 2018-23: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 15,700 ft³/s, July 28, 1969, gage height, 11.03 ft, datum then in use, from rating curve extended above 3,200 ft³/s on basis of slope-area measurement of peak flow; minimum discharge, 4.5 ft³/s, Sept. 23, 1964; minimum gage height, -0.26 ft Oct. 17, 1969, datum then in use.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Jan. 19, 1996, reached a stage of 7.41 ft, datum then in use, discharge, 6,790 ft³/s. Flood of Sept. 18, 2004, reached a stage of 8.50 ft, datum then in use.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: August 2018 to current year.
INSTRUMENTATION1.--Water-temperature recorder provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: Maximum, 26.4 °C, Aug. 4, 2022; minimum, 0.0 °C on many days during winter periods.
1 Water-Quality Records
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