USGS Water-Year Summary 2023
01423000 WEST BRANCH DELAWARE RIVER AT WALTON, NY
LOCATION - Lat 42°09'58.0", long 75°08'24.1" referenced to North American Datum of 1983, Delaware County, NY, Hydrologic Unit 02040101, on left bank at west end of fairgrounds at Walton, and 100 ft downstream from West Brook.
DRAINAGE AREA - 332 mi².
- WDR NY-82-1: Drainage area. Datum of gage was revised on Oct. 6. 2022, from 1,190.30 ft to 1,188.21 ft above NGVD of 1929 and from 1,189.88 ft to 1,187.77 ft above NAVD of 1988, based on an updated geodetic survey and correction of the original levels.
PERIOD OF RECORD - October 1950 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,188.21 ft above NGVD of 1929 and 1,187.77 ft above NAVD of 1988.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 28,600 ft³/s, June 28, 2006, gage height, 16.85 ft, outside gage height was 17.10 ft, from crest-stage gage; minimum discharge, 12 ft³/s, Sept. 15, Nov. 22, 1964; minimum gage height, 1.86 ft, Nov. 22, 1964.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 2018 to current year. SPECIFIC CONDUCTANCE: October 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 - WATER TEMPERATURE: Maximum, 33.2°C, July 20, 2022, but may have been higher during period of instrument malfunction; minimum, -0.1°C on several days during 2020 winter period and Feb. 16, 2022, but may have been lower during period of instrument malfunction. SPECIFIC CONDUCTANCE: Maximum, 227 uS/cm at 25 °C, Feb. 4, 2022; minimum, 44 uS/cm at 25 °C, Dec. 25, 2020.