This station is operated in cooperation
New York City Department of Environmental
U.S. Geological Survey
Lat 41°49'12", long 74°38'08"
referenced to North American Datum of 1983, Sullivan County, NY,
Hydrologic Unit 02040104, on right bank at downstream end of outlet
channel, 1,650 ft downstream from Neversink Dam and State Highway 55,
2.0 mi southwest of Neversink, and 2.6 mi upstream from Wynkoop
PERIOD OF RECORD.--
October 1941 to current year.
WDR NY-72-1: 1961 (M), 1968 (M). WDR
NY-82-1: Drainage area.
Water-stage recorder and concrete control. Datum of gage
is 1,255.24 ft above NGVD of 1929 (levels by Board of Water Supply,
City of New York) and 1,253.99 ft above NAVD of 1988. Prior to Jan. 17,
1953, at site 650 ft downstream at datum 0.20 ft lower. Jan. 17, 1953
to Apr. 16, 1954, at present site at datum 0.41 ft higher.
Subsequent to June 1953, entire flow from 92.5 mi² of
drainage area controlled by Neversink Reservoir (station 01435900).
Part of flow diverted for New York City municipal supply. Remainder of
flow (except for conservation release and spill) impounded for release
during periods of low flow in the lower Delaware River basin, as
directed by the Delaware River Master.
Water Years 2014-18: Records good.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, since
construction of Neversink Reservoir in 1953, 12,300 ft³/s, Apr. 3,
2005, gage height, 12.99 ft, outside gage height was about 14.8 ft,
from floodmark, from rating curve extended above 6,000 ft³/s; no flow
for all or part of each day Sept. 22-24, Oct. 26-29, 1954.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--
prior to construction of Neversink Reservoir in 1953, 22,300 ft³/s,
Nov. 25, 1950, gage height, 11.23 ft, site and datum then in use, from
rating curve extended above 2,600 ft³/s on basis of contracted-opening
and critical-depth measurements of peak flow; maximum gage height,
11.65 ft, Sept. 27, 1942, 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 300
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 https://waterdata.usgs.gov/nwis/help/?provisional