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ALL DATA ARE AT LOCAL TIME


* IMPORTANT: Next Generation Station Page

USGS 01387420 RAMAPO RIVER AT SUFFERN NY

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 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.
DRAINAGE AREA.--93 mi².
PERIOD OF RECORD.--June 1979 to current year.
REVISIONS HISTORY.--WDR NY-00-1: 1999 (M).
GAGE.--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.
REMARKS.--Flow affected by diversion from United Water New York well field upstream from station and by occasional regulation by Lake Sebago.
Water Years 2014-18: 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

Gage PhotoStation image

 

This station managed by the NY Water Science Center Troy.

Available Parameters Available Period
  
1990-10-01  2019-12-09
2007-10-01  2019-12-09







 (7)
 

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 155 12-09-2019   08:15 EST
Graph of  Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Dec 9 based on 39 water years of record more
Min
(2002)
25th
percen-
tile
Median Most Recent
Instantaneous
Value Dec 9
Mean 75th
percen-
tile
Max
(2012)
14.9 72 122 155 203 221 1240


Gage height, feet

Most recent instantaneous value: 3.20 12-09-2019   08:15 EST
Graph of  Gage height, feet

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