This station is operated in cooperation
New York City Department of Environmental
U.S. Geological Survey
Lat 42°04'30", long 74°58'35"
referenced to North American Datum of 1983, Delaware County, NY,
Hydrologic Unit 02040102, on left bank 0.5 mi downstream from
Downsville Dam, at downstream end of outlet channel of Pepacton
Reservoir, and 1.0 mi east of Downsville.
PERIOD OF RECORD.--
July 1941 to current year.
WDR NY-82-1: Drainage area. WDR-US-2006:
Water-stage recorder and concrete control. Datum of gage
is 1,094.92 ft above NGVD of 1929 (levels by Board of Water Supply,
City of New York). Prior to Sept. 26, 1941, nonrecording gage, and
Sept. 26, 1941 to June 27, 1955, water-stage recorder, at site 0.8 mi
downstream at datum 7.03 ft lower.
No estimated daily discharges. Records good.
Subsequent to September 1954, entire flow from drainage area controlled
by Pepacton Reservoir (station 01416900). 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 gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge since
construction of Pepacton Reservoir, 20,200 ft3
/s, Sept. 18,
2004, gage height, 12.08 ft; minimum discharge, 0.3 ft3
Oct. 11, 1954; minimum gage height, 1.39 ft, Jan. 17, 1964.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Flood of Oct. 9, 1903,
reached a stage of about 16 ft (at former site and datum).
EXTREMES FOR PERIOD PRIOR TO REGULATION.--
prior to construction of Pepacton Reservoir, 23,900 ft3
Nov. 26, 1950, gage height, 14.52 ft, site and datum then in use;
Peak Flow and Stage Information
USGS provisional real-time discharge data can
differ from NYCDEP discharge data at flows less than 700
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