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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.

USGS 01170000 DEERFIELD RIVER NEAR WEST DEERFIELD, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 32’09", long 72° 39’14", Franklin County, Hydrologic Unit 01080203, on right bank 0.4 mi downstream from South River, 1.2 mi west of West Deerfield, 2.5 mi west of Deerfield, and 9.2 mi upstream from mouth.
DRAINAGE AREA--557 mi2.
PERIOD OF RECORD--Discharge: March to November 1904, January 1905, March to December 1905, October 1940 to current year, published as "at Deerfield" 1904–5.
Water-quality records: June 1994.
REVISED RECORDS--WDR MA-RI-84-1: drainage area. WDR MA-RI-92-1: 1991.
GAGE--Data Collection Platform with satellite telemeter. Elevation of gage is 156.74 ft above North American Vertical Datum of 1988. Prior to Dec. 16, 1905, non-recording gage at site 1.5 mi downstream at different datum.
REMARKS--Flow regulated since 1913 by Somerset Reservoir, since 1924 by Harriman Reservoir, and by several powerplants upstream. Satellite gage-height telemeter at station.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.

For more information on the areal exent and depth of flood inundation during flooding at and near this streamgage go to the Flood Inundation Mapper
Boating safety tips
This station managed by the Northborough MA Field Office.

Available Parameters Available Period
All 2 Available Parameters for this site
   
00060 Discharge 1990-10-01  2018-12-12
00065 Gage height 2007-10-01  2018-12-12

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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: 1520 12-12-2018   11:30 EST
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Daily discharge, cubic feet per second -- statistics for Dec 12 based on 79 years of record more
Min
(1983)		 25th
percen-
tile		 Median Most Recent
Instantaneous
Value Dec 12		 Mean 75th
percen-
tile		 Max
(2009)
214 941 1290 1520 1600 1750 9610

Gage height, feet
Most recent instantaneous value: 3.36 12-12-2018   11:30 EST
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