Page Loading - Please Wait...
ICE EFFECTS ON STREAMFLOW
The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.
LOCATION--Lat 42o14'40", long
71o00'16", Norfolk County, Hydrologic Unit
01090001, on left bank at spillway into Burgin Brook diversion tunnel,
20 ft upstream from trash racks at entrance to Town Brook culvert, 100
ft west of Burgin Parkway, and about 1.5 mi upstream from Town River
Bay in Quincy.
DRAINAGE AREA--About 2.0 mi2 (unknown degree of inflow).
PERIOD OF RECORD--Gage height: February 1999 to September 2000; March 2001 to current year.
Precipitation: February 1999 to September 2000; March 2001 to current year.
GAGE--Data Collection Platform and heated tipping-bucket precipitation gage with telephone telemeter. Elevation of gage is 14.90 ft above National Geodetic Vertical Datum (NGVD) of 1929. Elevation of spillway into Burgin Brook diversion tunnel is 18.0 ft above NGVD. Elevation data provided by U.S. Army Corps of Engineers
REMARKS--Flows are diverted into Burgin Brook and diversion tunnel at a gage height of 18.0 ft (elevation of top of diversion dam). Periods of missing record are not estimated.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Division of Planning and Engineering