This station is operated in cooperation
National Weather Service
New York City Department of Environmental
U.S. Geological Survey
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. Water-quality sampling site
at discharge station.
PERIOD OF RECORD.--
October 1940 to current year.
WDR NY-82-1: Drainage area. WDR NY-04-1:
Water-stage recorder and crest-stage gage. Datum of gage
is 600.22 ft above NGVD of 1929.
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 (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. Satellite gage-height and
temperature telemeter at station.
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
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).
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.--
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, 2010-13), -0.1 °C, Feb. 13, 2012, many
days during 2013 winter period.
1 Water-Quality Records
Peak Flow and Stage Information