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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 01197500 HOUSATONIC RIVER NEAR GREAT BARRINGTON, MA

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION--Lat 42° 13'54.9", long 73° 21'16.8", Berkshire County, Hydrologic Unit 01100005, on left bank at upstream side of highway bridge at Van Deusenville, 0.5 mi upstream from Williams River, and 2 mi north of Great Barrington.
DRAINAGE AREA--282 mi2.
PERIOD OF RECORD--Discharge: May 1913 to current year.
Water-quality records: Water years 1957–59, 1964, 1971, and 1980.
Suspended sediment records: Water years 1980, 1994–96 (discontinued).
REVISED RECORDS--WSP 415: 1913–14. WSP 781: 1928(M). WSP 1051: 1928, 1933. WSP 1301: 1914–15(M), 1917–27(M), 1929–31(M). WDR MA-RI-83-1: 1980(P), 1982(P). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 683.04 ft above National Geodetic Vertical Datum of 1929. Prior to Oct. 1, 1931, nonrecording gage at same site and datum.
REMARKS--Regulation at low flow by powerplants upstream. High flow slightly affected by retarding reservoir since 1973.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.

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Available Parameters Available Period
All 2 Available Parameters for this site
   
00060 Discharge 1990-10-01  2018-04-21
00065 Gage height 2007-10-01  2018-04-21

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Discharge, cubic feet per second
Most recent instantaneous value: 1230 04-21-2018   11:30 EDT
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Daily discharge, cubic feet per second -- statistics for Apr 21 based on 103 years of record more
Min
(2012)		 25th
percen-
tile		 Median Mean Most Recent
Instantaneous
Value Apr 21		 75th
percen-
tile		 Max
(1983)
152 610 885 1110 1230 1370 5020

Gage height, feet
Most recent instantaneous value: 3.80 04-21-2018   11:30 EDT
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