USGS Water-Year Summary 2021
02061500 BIG OTTER RIVER NEAR EVINGTON, VA
LOCATION - Lat 37°12'30", long 79°18'14" referenced to North American Datum of 1927, Campbell County, VA, Hydrologic Unit 03010101, on right bank 60 ft upstream from bridge on State Highway 682, 2.0 mi southwest of Evington, and 2.1 mi upstream from Flat Creek.
DRAINAGE AREA - 315 mi².
- WSP 852: 1937. WSP 892: 1938-39(M). WSP 972: 1937-39. WSP 1032: 1940. OFR 2006-1308: Drainage area.
PERIOD OF RECORD - October 1936 to current year. Monthly discharge only for some periods, published in WSP 1303. Prior to October 1965, published as Otter River near Evington.
GAGE - Water-stage recorder. Datum of gage is 544.02 ft NGVD of 1929.
COOPERATION - Records were provided by the Virginia Department of Environmental Quality - Water Division.
EXTREMES OUTSIDE PERIOD OF RECORD - Floods in October 1937 and August 1939 reached a stage of 23.1 ft, discharge, 27,500 ft³/s, from rating curve extended above 7,000 ft³/s on basis of unit hydrograph and flood-routing studies by U.S. Army Corps of Engineers, and records for other stations in Roanoke River Basin.
PERIOD OF RECORD - October 2006 to September 2008.
PERIOD OF DAILY RECORD - October 2006 to September 2008.
COOPERATION - Daily records were provided by the Virginia Department of Environmental Quality - Water Division.
INSTRUMENTATION - Specific conductance and water temperature monitor. Electronic data logger with 15-minute recording interval.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum, 359 microsiemens/cm, May 4, 2008; minimum, 37 microsiemens/cm, July 30, 2007.
WATER TEMPERATURE: Maximum, 31.2°C, July 22, 2008; minimum, -0.1°C, Feb. 5, 2007.