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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 01104500 CHARLES RIVER AT WALTHAM, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 22’20", long 71° 14’03", Middlesex County, Hydrologic Unit 01090001, on right bank 800 ft downstream from Moody Street Bridge in Waltham and 0.3 mi upstream from Beaver Brook.
DRAINAGE AREA--227 mi2, excludes 23.6 mi2 drained by Stony Brook, from which flow is diverted for municipal supply of Cambridge.
PERIOD OF RECORD--Discharge: October 1903 to October 1909 (figures of average weekly discharge, equivalent to records of unadjusted discharge at present site), August 1931 to current year.
Water-quality records: Water years 1953, 1959, 1968–70.
REVISED RECORDS--WSP 781: 1933(M). WSP 851: drainage area. WSP 971: 1942.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 20.02 ft above sea level. Prior to July 10, 1904, at dam 700 ft upstream and July 10, 1904, to Oct. 2, 1909, at dam 0.7 mi downstream at different datums; discharge computed from flow over dam and through wheels and gates of Boston Manufacturing Co. and Waltham Bleachery, respectively.
REMARKS-- Flow affected by diversion to Mother Brook (station 01104000), diversions to and from basin for municipal supplies, and at times by water released from Stony Brook Reservoir. Prior to 1960, some regulation by mills upstream. Low flow completely regulated by Boston Edison Co. power plant prior to 1954.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Division of Planning and Engineering.

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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 1976-02-01  2017-08-21
00065 Gage height 2007-10-01  2017-08-21

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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: 110 08-21-2017   04:30 EDT
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Daily discharge, cubic feet per second -- statistics for Aug 21 based on 86 years of record more
Min
(1936)
25th
percen-
tile
Median Most Recent
Instantaneous
Value Aug 21
Mean 75th
percen-
tile
Max
(1955)
1.40 34 59 110 131 149 2200


Gage height, feet

Most recent instantaneous value: 1.14 08-21-2017   04:30 EDT
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