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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.

USGS 01179500 WESTFIELD RIVER AT KNIGHTVILLE, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 17'16", long 72° 51'53", Hampshire County, Hydrologic Unit 01080206, on left bank at Knightville, 0.2 mi downstream from Knightville Dam, 0.2 mi upstream from Sykes Brook, 2.4 mi upstream from Middle branch, 3.5 mi north of Huntington, and at mile 29.7.
DRAINAGE AREA--161 mi2.
PERIOD OF RECORD--Discharge: August 1909 to September 1990, October 1995 to current year.
Water-quality records: Water year 1953.
REVISED RECORDS--WSP 415: 1909–12. WSP 1001: 1941–43. WSP 1231: 1910, 1912, 1913(M), 1914–15, 1916–19(M), 1921–23(M), 1925–27(M), 1929–33(M), 1935(M). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Concrete control since Dec. 20, 1940. Datum of gage is 461.25 ft above National Geodetic Vertical Datum of 1929 (levels by U.S. Army Corps of Engineers). Prior to Jan. 11, 1936, nonrecording gage at site 0.5 mi upstream at different datum. Jan. 11, 1935, to May 20, 1940, water-stage recorder at site 700 ft upstream at datum 10.57 ft higher. May 21 to Dec. 19, 1940, nonrecording gage at site 700 ft upstream at datum 18.75 ft higher.
REMARKS-- Flow regulated by Knightville reservoir since 1941.
COOPERATION BY--U.S. Army Corps of Engineers

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This station managed by the Northborough MA Field Office.

Available Parameters Available Period
All 3 Available Parameters for this site
  
00060 Discharge 1995-03-09  2017-06-25
00062 Elevation, reservoir 2014-06-26  2017-06-25
00065 Gage height 2007-10-01  2017-06-25

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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: 222 06-25-2017   02:30 EDT
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Daily discharge, cubic feet per second -- statistics for Jun 25 based on 102 years of record more
Min
(2016)
25th
percen-
tile
Median Mean Most Recent
Instantaneous
Value Jun 25
75th
percen-
tile
Max
(1972)
26.5 71 114 181 222 224 1480


Gage height, feet

Most recent instantaneous value: 3.44 06-25-2017   02:30 EDT
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