USGS Water-Year Summary 2019
02054500 ROANOKE RIVER AT LAFAYETTE, VA
LOCATION - Lat 37°14'11", long 80°12'34" referenced to North American Datum of 1927, Montgomery County, VA, Hydrologic Unit 03010101, on right bank 120 ft upstream from bridge on State Highway 626 (corrected) at Lafayette, 0.4 mi downstream from confluence of North and South Forks, and 1.1 mi upstream from Cove Hollow.
DRAINAGE AREA - 254 mi².
- WSP 1333: 1944-47(M), 1948-49. OFR 2006-1308: Drainage area.
PERIOD OF RECORD - September 1943 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,174.47 ft NGVD of 1929. Prior to July 30, 1949, nonrecording gage at present site and datum.
COOPERATION - Records were provided by the Virginia Department of Environmental Quality - Water Division.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in August 1940 reached a stage of 12.2 ft, from information by local residents, discharge, 19,000 ft³/s, from rating curve extended above 12,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Instantaneous low flow, 8.0 ft³/s, Jan. 19, 1959, result of freezeup.