This station is operated in cooperation
New York City Department of Environmental
Lat 42°18'30", long 74°23'24"
referenced to North American Datum of 1983, Greene County, NY,
Hydrologic Unit 02020005, on right bank 200 ft southwest of State
Highway 23 at Red Falls, 1.9 mi upstream from mouth, and 2.2 mi
southeast of Prattsville.
PERIOD OF RECORD.--
October 1997 to current year.
Water-stage recorder and crest-stage gage. Datum of gage
is 1,269.16 ft above NGVD of 1929.
Records good except those for estimated daily
discharges, which are poor. Flow regulated to some extent at high flows
by three flood-retardation reservoirs, combined drainage area of 19.2
. Seasonal diversion for snowmaking by Ski Windam ski
area at Windham. Satellite gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 44,200
/s, Aug. 28, 2011, gage height, about 20.0 ft, from
floodmark, from rating curve extended above 2,600 ft3
basis of step-backwater analyses at gage heights 10.08 ft and about
20.0 ft; minimum discharge, 1.7 ft3
/s, Sept. 8, 2007, Sept.
26, 2010; minimum gage height, 0.97 ft, Aug. 9, 2012.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Flood of Jan. 19, 1996,
reached a stage of about 11.4 ft, from floodmark, discharge, 16,400
/s, on basis of step-backwater analysis at gage height
Derived from NY Annual Water-Data Report 2013
Peak Flow and Stage Information