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This station is operated in cooperation with:
   New York City Department of Environmental Protection
   NYS Department of Environmental Conservation

LOCATION.--Lat 42°00'11", long 75°23'01" referenced to North American Datum of 1983, Delaware County, NY, Hydrologic Unit 02040101, on left bank at downstream side of bridge on County Highway 56 in Hale Eddy, and 9 mi upstream from confluence of East and West Branches near Hancock. Water-quality sampling site at discharge station.
DRAINAGE AREA.--595 mi2.
PERIOD OF RECORD.--November 1912 to current year.
REVISED RECORDS.--WSP 871: 1916. WDR NY-82-1: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 946.46 ft above NGVD of 1929. Prior to Sept. 8, 1928, nonrecording gage.
REMARKS.--Records good except those for estimated daily discharges, which are fair. Subsequent to October 1963, entire flow from 454 mi2 drainage area controlled by Cannonsville Reservoir (see 01424997). Part of flow 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 and telephone gage-height and temperature telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge since construction of Cannonsville Reservoir, 43,400 ft3/s, June 28, 2006, gage height, 19.10 ft; minimum discharge, 17 ft3/s, Oct. 20, 1963; minimum gage height, 1.03 ft, Aug. 4, 1936.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Oct. 10, 1903, reached a stage of 20.3 ft, from floodmarks, discharge, about 46,000 ft3/s.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--Maximum discharge prior to construction of Cannonsville Reservoir, 28,900 ft3/s, Mar. 22, 1948, gage height, 15.69 ft; maximum gage height, 15.8 ft, Sept. 30, 1924, from graph based on gage readings.
PERIOD OF RECORD1.--Water years 1958-59, 1968 to current year.
CHEMICAL DATA: 1958-59 (d), 1970 (b), 1971-74 (d), 1975 (c).
ORGANIC DATA: OC--1974 (a), 1975 (c).
NUTRIENT DATA: 1971-74 (d), 1975 (c).
BIOLOGICAL DATA: Bacteria--1971, 1973 (c); 1974 (d); 1975 (c).
INSTRUMENTATION1.--Water-temperature satellite and telephone telemeter provides 15-minute-interval readings. From October 1976 to April 1993, water-temperature recorder provided one-hour-interval readings. Prior to October 1976, water-temperature recorder provided continuous readings.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: Prior to Oct. 1, 2007--Maximum (water years 1968-77, 1979-83, 1985, 1988-96, 1998-2007), 30.5°C, July 22, 23, 1972, June 16, 1981; minimum (water years 1968, 1978-2007), 0.0°C on many days during winter periods.
WATER TEMPERATURE: After Oct. 1, 2007--Maximum, 20.2°C, Sept. 8, 15, 2008, May 31, 2011; minimum, 0.0°C, Dec. 2, 2007, Nov. 23, 2008, several days during 2011 winter period, Jan. 15, 2012.
1 Water-Quality Records
Derived from NY Annual Water-Data Report 2012

Peak Flow and Stage Information
This station managed by the NY Water Science Center, Troy.

Available Parameters Available Period
All 3 Available Parameters for this site
00065 Gage height 2014-03-25  2014-07-23
00010 Temperature, water 2007-10-01  2014-07-23
00060 Discharge 2007-10-01  2014-07-23

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Gage height, feet

Most recent instantaneous value: 3.22   07-23-2014  16:45 EST
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Temperature, water, degrees Celsius

Most recent instantaneous value: 14.5   07-23-2014  16:45 EST
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Discharge, cubic feet per second

Most recent instantaneous value: 721   07-23-2014  16:45 EST
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Daily discharge, cubic feet per second -- statistics for Jul 23 based on 50 years of record more
Median Mean Most Recent
Value Jul 23
36 378 502 593 721 793 1730

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Page Contact Information: New York Water Data Support Team
Page Last Modified: 2014-07-23 18:11:26 EDT
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