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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 01104705 CHARLES RIVER AT FIRST ST AT CAMBRIDGE, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42o21'44", long 71o04'43", Suffolk County, Hydrologic Unit 01090001, on left bank, 100 ft downstream from Longfellow Bridge, at intersection of Broad Canal and First St. Bridge, Cambridge, MA..
DRAINAGE AREA--309 mi2, excludes 23.6 mi2 drained by Stony Brook, from which flow is diverted for municipal supply for Cambridge.
PERIOD OF RECORD--January 2007 to current year.
GAGE--Data Collection Platform with telephone telemeter.
DATUM--Datum of gages are from the Massachusetts Metropolitan District Commission base, which is 105.62 ft higher than NGVD 1929.
REMARKS--Stage may be affected by operation of the New Charles River Dam about 1 mile downstream.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Division of Planning and Engineering

This station managed by the Northborough, MA Field Office.

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All 1 Available Parameters for this site
  
00065 Gage height 2007-10-01  2015-05-05

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Gage height, feet

Most recent instantaneous value: 107.22   05-05-2015  06:00 EDT
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