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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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LOCATION--Lat 41°23’01", long 71°50’01", Washington County, Hydrologic Unit 01090005, on left bank at Westerly, 2.1 mi downstream from Shunock River.
PERIOD OF RECORD--Discharge: November 1940 to current year.
Water-quality records: Water years 1953, 1963, 1976–2002.
REVISED RECORDS--WSP 1051: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 2.68 ft below NAVD 1988; 1.76 ft below NGVD 1929.
REMARKS--Records good except those for estimated daily discharge, which are fair. Many days are adjusted for tidal backwater, which lasts as much as 4 hours during times of high tide. Diurnal fluctuation at low flow prior to 1962 by mills upstream; regulation much greater prior to 1958. Diversion upstream for municipal supply of Westerly.
COOPERATION BY--Rhode Island Water Resources Board

For more information on the areal extent and depth of flood inundation during flooding at and near this streamgage go to the Flood Inundation Mapper
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Available Parameters Available Period
All 11 Available Parameters for this site
00010 Temperature, water 2019-03-19  2019-06-23
00060 Discharge 1990-10-01  2019-07-16
00065 Gage height 2007-10-01  2019-07-16
00095 Specific cond at 25C 2019-03-19  2019-06-23
00300 Dissolved oxygen 2019-03-19  2019-06-23
00400 pH 2019-03-19  2019-06-23
32318 Chlorophylls,in situ 2019-03-19  2019-06-23
32319 fPC, water, in situ 2019-06-12  2019-06-23
32320 fChl,in situ,470/685 2019-03-19  2019-06-23
32321 Relative fPC, water, in situ 2019-04-24  2019-06-23
63680 Turbidity, Form Neph 2019-03-19  2019-06-23

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Days  (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: 366 07-16-2019   16:00 EDT
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Daily discharge, cubic feet per second -- statistics for Jul 16 based on 78 water years of record more
Median Mean 75th
Most Recent
Value Jul 16
85.0 145 222 285 329 366 1280

Gage height, feet

Most recent instantaneous value: 4.75 07-16-2019   16:00 EDT
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