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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.



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LOCATION--Lat 42° 25’14 ",long 71° 08’33", Middlesex County, Hydrologic Unit 01090001, on left bank upstream side of bridge at Route 60, between Arlington and Medford, Ma.
DRAINAGE AREA.--Undertermined.
PERIOD OF RECORD--Discharge: September 2015 to current year.
GAGE--Data Collection Platform and velocity sensor with high-data-rate satellite telemeter. Elevation of gage is Boston City Datum.
COOPERATION BY--Massachusetts Water Resources Authority and Mystic River Watershed Association.

REMARKS.--River level affected by gate operations at Amelia Earhart Dam, located about 4.5 miles downstream.
Boating safety tips
Available Parameters Available Period
All 4 Available Parameters for this site
00010 Temperature, water 2015-09-18  2017-09-19
00060 Discharge 2016-06-29  2017-09-19
00065 Gage height 2015-09-18  2017-09-19
72255 Mean water velocity 2016-06-29  2017-09-19

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Days  (7)

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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: 57.6 09-19-2017   20:15 EDT
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Daily discharge, cubic feet per second -- statistics for Sep 19 based on 1 years of record more
Mean Min
Median Max
Most Recent
Value Sep 19
4.5 4.52 4.5 4.52 57.6

Gage height, feet

Most recent instantaneous value: 105.11 09-19-2017   20:15 EDT
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