This station is operated in cooperation
National Weather Service
New York City Department of Environmental
U.S. Geological Survey
LOCATION.--Lat 41°30'32", long 74°59'10"
referenced to North American Datum of 1927, Sullivan County, NY,
Hydrologic Unit 02040101, on left bank 1.6 mi upstream from Lackawaxen
River, and 4.6 mi northwest of Barryville. Water-quality sampling site
at discharge station.
DRAINAGE AREA.--2,020 mi2.
PERIOD OF RECORD.--October 1940 to current year.
REVISED RECORDS.--WDR NY-82-1: Drainage area. WDR NY-04-1:
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage
is 600.22 ft above NGVD of 1929.
REMARKS.--Records good except those for estimated daily
discharges, which are poor. Subsequent to September 1954, entire flow
from 371 mi2 of drainage area controlled by Pepacton
Reservoir (01416900), and subsequent to October 1963, entire flow from
454 mi2 of drainage area controlled by Cannonsville
Reservoir (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. Satellite gage-height and temperature telemeter at
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.
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 year 2008), 0.0°C, on several days during winter
1 Water-Quality Records
Derived from NY Annual Water-Data Report 2011
Peak Flow and Stage Information
This station managed by the NY Water Science Center, Troy.