USGS Current Conditions for USGS 01105000 NEPONSET RIVER AT NORWOOD, MA

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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.

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USGS 01105000 NEPONSET RIVER AT NORWOOD, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 10’39", long 71° 12’05", Norfolk County, Hydrologic Unit 01090001, on left bank 200 ft upstream from Pleasant Street Bridge, 200 ft downstream from railroad bridge, 0.45 mi downstream from Hawes Brook, and 0.5 mi south of Norwood.
DRAINAGE AREA--34.7 mi².
PERIOD OF RECORD--Discharge: October 1939 to current year. October 1939 monthly discharge only, published in WSP 1301.
Water-quality records: Water years 1958–59, 1966–68, 1999.
REVISED RECORDS--WDR MA-RI-78-1: 1976(M). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 43.25 ft above NAVD 1988. Prior to May 12, 2020, datum of gage reported as 44.04 ft above NGVD 1929. Since Oct. 1, 1960, recording orifice at upstream side of railroad bridge, at same datum.
REMARKS--Flow regulated by mills and reservoirs upstream. Flow affected by several diversions upstream for municipal and industrial use.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.