Funding for this site is provided by:
41°07'06", long 74°09'37" referenced to North
American Datum of 1983, Rockland County, NY, Hydrologic Unit 02030103,
on left bank 145 ft downstream from highway bridge on New York State
Thruway at Suffern, and 1.1 mi upstream from Mahwah River.
PERIOD OF RECORD.--
June 1979 to current year.
WDR NY-00-1: 1999 (M).
Water-stage recorder, crest-stage gage, and concrete
control. Datum of gage is 264.44 ft above NGVD of 1929 and 263.29 ft
above NAVD of 1988.
Flow affected by diversion from United Water New York
well field upstream from station and by occasional regulation by Lake
Water Years 2014-19: Records fair except those for estimated daily
discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 14,700 ft³/s,
Aug. 28, 2011, gage height, 18.88 ft, on basis of runoff comparisons
with nearby stations; minimum discharge, 1.7 ft³/s, Sept. 7, 1995, gage
height, 1.04 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Maximum discharge, 6,600
ft³/s, Mar. 12, 1936, by computation of flow over dam at site 0.65 mi
upstream, drainage area, 90.6 mi².
Peak Flow and Stage Information