Funding for this site is provided by:
LOCATION.--Lat
41°30'32", long 74°59'09" referenced to North
American Datum of 1983, Sullivan County, NY, Hydrologic Unit 02040101,
on left bank 1.6 mi upstream from Lackawaxen River, and 4.6 mi
northwest of Barryville.
DRAINAGE AREA.--2,020 mi².
PERIOD OF RECORD.--October 1940 to current year.
REVISIONS HISTORY.--WDR NY-82-1: Drainage area. WDR NY-04-1:
2003.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage
is 600.22 ft above NGVD of 1929 and 599.51 ft above NAVD of 1988.
REMARKS.--Subsequent to September 1954, entire flow from 371 mi²
of drainage area controlled by Pepacton Reservoir (station 01416900),
and subsequent to October 1963, entire flow from 454 mi² of drainage
area controlled by Cannonsville Reservoir (station 01424997). Part of
flow of these reservoirs diverted for New York City municipal supply.
Remainder of flow (except for conservation releases and spill)
impounded for release during periods of low flow in the lower Delaware
River basin, as directed by the Delaware River Master.
Water Years 2014-17: Records good except those for estimated daily
discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge prior to
current degree of regulation, 130,000 ft³/s, Aug. 19, 1955, gage
height, 26.40 ft, from floodmarks in gage house, from rating curve
extended above 57,000 ft³/s on basis of slope-area measurement at gage
height 23.19 ft; maximum discharge since current degree of regulation,
151,000 ft³/s, June 28, 2006, gage height, 28.97 ft, from floodmark in
gage house, from rating curve extended as explained above; minimum
discharge, 122 ft³/s, Sept. 5, 1953, gage height, 1.11 ft.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: October
1967 to current year (no winter record for water years 1969-76).
INSTRUMENTATION1.--Water-temperature satellite and
telephone telemeter provides 15-minute-interval readings. From October
1975 to September 1995, water-temperature recorder provided
one-hour-interval readings. Prior to October 1975, water-temperature
recorder provided continuous readings.
REMARKS1.--Temperature readings prior to Oct. 1,
2007, rounded to the nearest 0.5 °C.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER
TEMPERATURE: Prior to Oct. 1, 2007--Maximum (water years 1968-75,
1980-81, 1983, 1985-96, 1998-2001, 2003-07), 32.5 °C, July 9, 10, 1993;
minimum (water years 1968, 1977-2007), 0.0 °C, on many days during
winter periods, each year except water years 1980-82. WATER
TEMPERATURE: After Oct. 1, 2007--Maximum, 32.0 °C, July 7, 8, 2010;
minimum (water years 2008, 2010-17), -0.1 °C, Feb. 13, 2012, many days
during 2013 winter period, Dec. 22, 26, 2013, and several days during
2015 winter period.
1 Water-Quality Records
Peak Flow and Stage Information
Station image