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ALL DATA ARE EASTERN STANDARD TIME

USGS 01425000 WEST BR DELAWARE RIVER AT STILESVILLE NY

PROVISIONAL DATA SUBJECT TO REVISION

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This station is operated in cooperation with:
   New York City Department of Environmental Protection
   U.S. Geological Survey


LOCATION.--Lat 42°04'29", long 75°23'46" referenced to North American Datum of 1983, Delaware County, NY, Hydrologic Unit 02040101, on right bank at Stilesville, 0.5 mi upstream from Cold Spring Creek, 1.4 mi downstream from Cannonsville Dam, and 2.0 mi northeast of Deposit. Water-quality sampling site at discharge station.
DRAINAGE AREA.--456 mi2.
PERIOD OF RECORD.--July 1952 to current year.
REVISED RECORDS.--WDR NY-05-1: 1973, 1977, 1979, 1986, 1993, 2004.
GAGE.--Water-stage recorder and concrete control. Datum of gage is 992.23 ft above NGVD of 1929 (levels by Board of Water Supply, City of New York). Prior to Oct. 1, 1964, at site 600 ft downstream at datum 1.37 ft higher.
REMARKS.--No estimated daily discharges. Records fair. Subsequent to October 1963, entire flow from 454 mi2 of drainage area controlled by Cannonsville Reservoir (station 01424997). Part of flow diverted for New York City municipal supply. Remainder of flow (except for conservation releases and spill) impounded for release during period 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 since construction of Cannonsville Reservoir, 33,100 ft3/s, June 28, 2006, gage height, 17.72 ft; minimum discharge not determined.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--Maximum discharge prior to construction of Cannonsville Reservoir, 17,500 ft3/s, Jan. 22, 1959, gage height, 9.01 ft, site and datum then in use.
PERIOD OF DAILY RECORD1.--
WATER TEMPERATURE: October 1962 to current year.
INSTRUMENTATION1.--Water-temperature satellite telemeter provides 15-minute-interval readings. From October 1975 to February 1993, water-temperature recorder provided one-hour-interval readings. Prior to October 1975, water-temperature recorder provided continuous recordings.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: Prior to Oct. 1, 2007--Maximum (water years 1963-78, 1980-82, 1984-86, 1988, 1990-92, 1994-95, 1997, 1999-2002, 2004-07), 30.5 °C, July 2, 1963; minimum (water years 1963-95, 1998-2003, 2006), 0.0 °C on many days during winter periods, except 1969, 1973, 1986-87, 1990-91, 1994-95, 2001, 2006.
WATER TEMPERATURE: After Oct. 1, 2007--Maximum, 21.9 °C, Aug. 1, 2, 2009; minimum, 1.0 °C, Feb. 12, 2008.
1 Water-Quality Records
Derived from NY Annual Water-Data Report 2013

Peak Flow and Stage Information

USGS provisional real-time discharge data can differ from NYCDEP discharge data at flows less than 2,100 ft3/s as a result of debris or other obstructions affecting the USGS stage-discharge relationship. USGS and NYCDEP data may also differ as a result of accuracy limitations of the stage-discharge rating and the release valve ratings. Release valve changes are recorded at the stream-gaging station after a brief period due to travel time between the two locations.
More information about provisional data can be found at
http://waterdata.usgs.gov/nwis/help/?provisional


Available Parameters Available Period
All 3 Available Parameters for this site
  
00060 Discharge 2007-10-01  2014-07-28
00065 Gage height 2014-03-30  2014-07-28
00010 Temperature, water 2014-03-30  2014-07-28

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 609   07-28-2014  22:45 EST
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Daily discharge, cubic feet per second -- statistics for Jul 29 based on 50 years of record more
Most Recent
Instantaneous
Value Jul 29
Min
(1965)
25th
percen-
tile
Median Mean 75th
percen-
tile
Max
(1971)
-- unavailable -- 41 300. 399 504 663 1280


Gage height, feet

Most recent instantaneous value: 8.14   07-28-2014  22:45 EST
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Page Contact Information: New York Water Data Support Team
Page Last Modified: 2014-07-29 00:40:27 EDT
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