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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.


* IMPORTANT: Next Generation Station Page

USGS 01168500 DEERFIELD RIVER AT CHARLEMONT, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 37’33.6", long 72° 51’15.1"(revised), Franklin County, Hydrologic Unit 01080203, on left bank 0.8 mi east of Charlemont, 2.5 mi downstream from Chickley River, and at mile 24.5.
DRAINAGE AREA--361 mi2.
PERIOD OF RECORD--Discharge: June 1913 to current year.
Water-quality records: Water years 1954–55, 1958, 1967–69, 1995.
REVISED RECORDS--WSP 781: 1915(M). WSP 1301: 1918(M). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 516.93 ft above North American Vertical Datum of 1988.
REMARKS--Flow regulated by Somerset Reservoir, since 1924 by Harriman Reservoir, and by several powerplants upstream. Telephone and satellite gage-height telemeter at station.
COOPERATION BY--Great River Hydro Company

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
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This station managed by the Northborough MA Field Office.

Available Parameters Available Period
  
1990-10-01  2019-12-07
2007-10-01  2019-12-07







 (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: 986 12-07-2019   07:30 EST
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Daily discharge, cubic feet per second -- statistics for Dec 7 based on 106 water years of record more
Min
(1965)		 25th
percen-
tile		 Median Most Recent
Instantaneous
Value Dec 7		 Mean 75th
percen-
tile		 Max
(1924)
35.0 604 984 986 1090 1440 4300

Gage height, feet
Most recent instantaneous value: 3.23 12-07-2019   07:30 EST
Graph of Gage height, feet

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