USGS Water-Year Summary 2022
01427000 WEST BRANCH DELAWARE RIVER AT HANCOCK, NY
LOCATION - Lat 41°57'07.8", long 75°17'27.4" referenced to North American Datum of 1983, Delaware County, NY, Hydrologic Unit 02040101, at bridge at end of Pennsylvania State Highway 191 in Hancock, and 1.3 mi upstream from confluence with East Branch Delaware River.
DRAINAGE AREA - 650 mi².
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 1996 to current year.
INSTRUMENTATION - Water-temperature satellite telemeter provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Prior to Oct. 1, 2007--Maximum, 25.0 °C, July 11, 12, 2005; minimum, 0.0 °C on many days during winter periods.
WATER TEMPERATURE: After Oct. 1, 2007--Maximum, 23.4 °C, May 26, 2010; minimum, -0.1 °C, Mar. 3, 2009 and many days during 2018 and 2020-21 winter periods.