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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 01115187 PONAGANSET RIVER AT SOUTH FOSTER, RI

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 41o49'07", long 71o42'20", Providence County, RI, Hydrologic Unit 01090004, on left bank, 5 ft downstream from bridge on Elmdale Road, on Rams Tail Road, 0.4 mi upstream from Barden Reservoir, and 0.3 mi south of South Foster.
DRAINAGE AREA.--14.0 mi2.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--March 1994 to current year.

GAGE.--Data Collection Platform with telephone telemeter. Datum of gage is 354.20 ft above NAVD 1988, estimated from topographic map. Datum of gage previously reported as 350 ft above NGVD 1929, estimated from topographic map.

WATER-QUALITY RECORDS

PERIOD OF RECORD.--February 2000 to May 2001, October 2001 to September 2006, and February 2009 to current year.
INSTRUMENTATION.--Water temperature and specific conductance monitor.

COOPERATION BY.-- Rhode Island Department of Environmental Management and Providence Water Supply Board

NOTE.--The precipitation data for this station are temporary and will only be displayed for 120 days. Time series of 15-minute or cumulative daily values WILL NOT be available for retrieval following the 120-display period. Although the instrumentation is calibrated at least once/year, the temporary classification means that documented routine inspections and other quality assurance measures are not performed that would make the data acceptable for archival, retrieval, or future use in general scientific or interpretive studies.



Boating safety tips
Available Parameters Period of Record
  
2000-02-01  2024-04-24
1994-03-22  2024-04-24
2000-02-01  2024-04-24







 (365)
 
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