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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  2014-09-03
    00065 Gage height 2007-10-01  2014-09-03

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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: 34   09-03-2014  02:30 EDT
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    Daily discharge, cubic feet per second -- statistics for Sep 3 based on 94 years of record more
    Most Recent
    Value Sep 3
    Median 75th
    Mean Max
    5.9 20. 34 34 82 105 2360

    Gage height, feet

    Most recent instantaneous value: 3.57   09-03-2014  02:30 EDT
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