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USGS 01387500 Ramapo River near Mahwah NJ


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National Weather Service flood stage for this gage is 8.0 ft.

Forecasts for this gage are issued by the National Weather Service routinely year-round.
Forecast information is available here.

gage photo LOCATION.--Lat 41°05'53", long 74°09'46" referenced to North American Datum of 1983, Mahwah Township, Bergen County, NJ, Hydrologic Unit 02030103, on left bank 350 ft downstream from State Highway 17, 0.6 mi downstream from Mahwah River, 1.0 mi west of Mahwah, and 1.2 mi downstream of New York-New Jersey State line.
DRAINAGE AREA.--120 mi2.
PERIOD OF RECORD.--October 1902 to December 1906, September 1922 to current year. October 1902 to February 1905 monthly discharge only, published in WSP 1302. Figures of daily discharge Feb 10, 1903 to Dec 31, 1904, published in WSP 97 and 125, are unreliable and should not be used. Gage-height records for 1903-14 are contained in reports of the National Weather Service.
GAGE.--Water-stage recorder. Datum of gage is 253.10 ft above NGVD of 1929. Prior to Dec 31, 1906, nonrecording gage on former bridge at site 250 ft downstream at different datum. Sep 1, 1922 to Dec 23, 1936, water-stage recorder just below former bridge at present datum.
COOPERATION.--Funding for this gage is provided by the New Jersey Department of Environmental Protection and the U.S. Geological Survey.

Boating safety tips

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 2007-10-01  2015-11-30
00065 Gage height 2007-10-01  2015-11-30

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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: 79   11-30-2015  07:30 EST
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Daily discharge, cubic feet per second -- statistics for Nov 30 based on 95 years of record more
Most Recent
Value Nov 30
Median Mean 75th
22 79 100 180 298 375 1950

Gage height, feet

Most recent instantaneous value: 3.90   11-30-2015  07:30 EST
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