USGS Water-Year Summary for Site 02060500

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	00060 Discharge(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

02060500 ROANOKE (STAUNTON) RIVER AT ALTAVISTA, VA

LOCATION - Lat 37°06'16", long 79°17'44" referenced to North American Datum of 1927, Pittsylvania County, VA, Hydrologic Unit 03010101,

on right bank 12 ft upstream from bridge on alternate U.S. Highway 29, 0.3 mi south of Altavista, 0.3 mi downstream from Sycamore Creek, 3.5 mi upstream from Big Otter River, and at mile 286.5.

$word OF TEMPORARY RADAR GAGE: Lat 37.105705, Long 79.285638

DRAINAGE AREA - 1,782 mi².

REVISIONS HISTORY - WSP 892: 1938(M). WSP 972: 1931-33. OFR 2006-1308: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - August 1930 to current year.

GAGE -

Water-stage recorder. Datum of gage is 502.27 ft NAVD of 1988. Prior to Feb. 21, 1951, on left bank 50 ft downstream, at present datum.

Temporary radar gage installed 2700 feet downstream on RT 668 bridge. Datum was transferred.

REMARKS - Flow regulated since 1962 by Leesville Lake (station 02059400) 9.5 mi upstream and since 1963 by Smith Mountain Lake (station 02057400) 27.5 mi upstream. Statistics of monthly mean data and summary statistics for water years 1931 - 1962 (unregulated flow) are available in previous data books, water years 1991 - 1998. U.S. Army Corps of Engineers satellite gage-height telemeter at station. American Electric Power gage-height transmitter at station with recorder at Roanoke. Hadson Power Company gage-height telemeter at station. Maximum discharge, 105,000 ft³/s, from rating curve extended above 52,000 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. Water-quality records for some prior periods have been collected at this location.

EXTREMES FOR PERIOD PRIOR TO REGULATION - 1931-62: Maximum peak flow, 105,000 ft³/s, Aug. 15, 1940, gage height, 40.08 ft, from floodmarks. Instantaneous low flow, 94 ft³/s, Jan. 31, 1934.