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Water-Year Summary for Site 02056000

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Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
02056000 ROANOKE RIVER AT NIAGARA, VA
LOCATION - Lat 37°15'18", long 79°52'18" referenced to North American Datum of 1927, Roanoke County, VA, Hydrologic Unit 03010101,

on right bank 200 ft downstream from power plant of American Electric Power at Niagara, 2 mi downstream from Tinker Creek, 2.1 mi southeast of Vinton, and at mile 355.3.

 

 

DRAINAGE AREA - 509 mi².
REVISIONS HISTORY - WSP 972: 1927(M), 1929(M), 1934(M), 1937(M). WSP 1303: 1928, 1930, 1933-38, 1940. WDR VA-72-1: 1928(M), 1930(M), 1933(M), 1935-36(M), 1938(M), 1940, 1944-45(M), 1948-49(M), 1951(M), 1955(M), 1960(M), 1967(M), 1969(M). OFR 2006-1308: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1926 to current year.
GAGE - Water-stage recorder. Datum of gage is 819.7 ft, NAVD88.
REMARKS - Flow regulated by dam and power plant 200 ft upstream from station. Maximum discharge, 52,300 ft³/s, from rating curve extended above 12,000 ft³/s on basis of slope-area measurements at gage heights 18.98 ft and 25.30 ft.
WATER-QUALITY RECORDS
PERIOD OF RECORD - November 2006 to June 2009.
PERIOD OF DAILY RECORD - March 2007 to June 2009.
INSTRUMENTATION - Specific conductance and water temperature monitor. Electronic data logger with 15-minute recording interval.
EXTREMES FOR PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: Maximum, 860 microseimens/cm, Mar. 3, 2009; minimum, 166 microseimens/cm, Apr. 28, 2008.
WATER TEMPERATURE: Maximum, 28.6°C, Aug. 10, 2007; minimum, 1.3°C, Jan. 17, 2009.