Funding for this site is provided by:
SURFACE-WATER RECORDS
LOCATION.--Lat 41°08'28", long 74°06'58"
referenced to North American Datum of 1983, Ramapo Township, Rockland
County, NY, Hydrologic Unit 02030103, on left bank 13 ft upstream from
bridge on U.S. Route 202, 2.5 mi northeast of Suffern, and 4.8 mi
upstream from mouth.
DRAINAGE AREA.--12.3 mi
2.
PERIOD OF RECORD.--Continuous-record discharge station, water
years 1959-95, 2006 to current year. Annual maximum gage, water years
1996 to 2005.
REVISED RECORDS.--WDR NY-79-1:1977(P). WDR NY-87-1:1986. WRD
US-2011: 2001(M), 2005(M), 2006(M), 2007(M), 2008(M), 2010(M).
GAGE.--Water-stage recorder with telemetry. Datum of gage is
321.57 ft above NGVD of 1929. Prior to Nov 18, 1976, water-stage
recorder at site on right bank, 13 ft downstream, at present
datum.
REMARKS.--Records fair, except for estimated discharges, which
are poor. Occasional regulation at low flow due to unknown source.
Pumping from wells upstream of gage may affect flow past gage.
Discharges above 2,200 ft
3/s from rating curve extension on
basis of contracted-opening and flow-over-road computations.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 3,700
ft
3/s, Aug 28, 2011, gage height, 10.66 ft, from rating
curve extended above 2,200 ft
3/s on basis of
contracted-opening and flow-over-road computations; minimum discharge,
0.05 ft
3/s, Oct 20, 1970, result of temporary pumping from
gage pool.
Peak
Flood Chart
National Weather Service flood stage for
this gage is 4.0 ft.
Rain gage data is available from this location at this link.
