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ICE EFFECTS ON STREAMFLOW During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.

USGS 01102000 IPSWICH RIVER NEAR IPSWICH, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42°39’35", long 70°53’39", Essex County, Hydrologic Unit 01090001, on left bank 200 ft downstream from Willowdale Dam, 1.5 mi downstream from Howlett Brook, and 4 mi upstream from Ipswich.
DRAINAGE AREA--125 mi2.
PERIOD OF RECORD--Discharge: June 1930 to current year.
Water-quality records: Water years 1954, 1976–79.
REVISED RECORDS--WSP 1621: 1930–58 (monthly runoff). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 20.63 ft above National Geodetic Vertical Datum of 1929.
REMARKS--Diversions upstream for municipal supply of Reading, Lynn, Peabody, Danvers, Salem, and Beverly. Occasional regulation by dams and reservoirs upstream.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.

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This station managed by the Northborough, MA Field Office.

Available Parameters Available Period
All 2 Available Parameters for this site
  
00060 Discharge 2007-10-01  2016-12-02
00065 Gage height 2007-10-01  2016-12-02

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