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    ALL DATA ARE AT LOCAL TIME



    USGS 01403400 Green Brook at Seeley Mills NJ

    PROVISIONAL DATA SUBJECT TO REVISION

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    Estimated flood stage for this gage is 5.5 feet.

     
    gage photoLOCATION. --Lat 40°39'58", long 74°24'14" referenced to North American Datum of 1983, Watchung Borough, Somerset County, NJ, Hydrologic Unit 02030105, on right bank at Seeley Mills, 250 ft downstream from Blue Brook, 300 ft downstream from bridge on New Providence (Diamond Hill) Road, and 0.5 mi northwest of Scotch Plains.
    DRAINAGE AREA. --6.23 mi2.
    PERIOD OF RECORD. --Annual maximum, water years 1927-38 (in files of Union County Park Commission), 1958-68 (in files of Union County Park Commission), 1969-79. Fragmentary records 1944-53 (in the files of the U.S. Geological Survey). Occasional low-flow measurements, water years 1959-64, 1969. Continuous-record gaging station, June 1979 to current year.
    GAGE. --Water-stage recorder. Datum of gage is 184.44 ft above NGVD of 1929. From 1944 to 1953, water-stage recorder and masonry dam about 400 ft downstream, above lower Seeley Mills dam at different datum. From July 1969 to May 1979, crest-stage gage about 450 ft downstream below lower Seeley Mills dam (washed out May 29, 1968) at different datum.
    EXTREMES OUTSIDE PERIOD OF RECORD. --Flood of July 23, 1938 reached an elevation of 196.5 ft (New Jersey Geological Survey datum; above lower Seeley Mills dam), discharge, 5,840 ft3/s (computed by State Water Policy Commission).
    COOPERATION. --This gage is funded by U.S. Army Corps of Engineers, Somerset County Board of Chosen Freeholders, and the U.s. Geological Survey.

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    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  2014-09-02
    00065 Gage height 2007-10-01  2014-09-02

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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: 2.6   09-02-2014  18:45 EDT
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    Daily discharge, cubic feet per second -- statistics for Sep 2 based on 34 years of record more
    Min
    (1999)
    25th
    percen-
    tile
    Median Most Recent
    Instantaneous
    Value Sep 2
    75th
    percen-
    tile
    Mean Max
    (2006)
    0.49 1.4 1.8 2.6 3.9 5.2 53


    Gage height, feet

    Most recent instantaneous value: 1.26   09-02-2014  18:45 EDT
    Graph of  Gage height, feet

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