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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
03170000 LITTLE RIVER AT GRAYSONTOWN, VA
LOCATION - Lat 37°02'15", long 80°33'25" referenced to North American Datum of 1927, Pulaski County, VA, Hydrologic Unit 05050001, on left bank at upstream side of bridge on State Highway 693 at Snowville, 0.5 mi southeast of Graysontown, 7 mi south of Radford, and at mile 8.6.
DRAINAGE AREA - 309 mi².
REVISIONS HISTORY - WSP 823: 1929-36. WSP 1143: 1945. WSP 1305: 1929(M). WSP 1625: 1951(M). WSP 1725: 1936(M). OFR 2006-1308: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1928 to current year. Published as "at Graysonton" prior to October 1990.
GAGE - Water-stage recorder. Datum of gage is 1,815.62 ft NAVD of 1988. Prior to Nov. 20, 1931, nonrecording gage at bridge 1.0 mi downstream, at datum of 1,798.05 ft NGVD of 1929. Nov. 20, 1931, to Nov. 12, 1941, water-stage recorder 1.2 mi downstream, at datum of 1,795.46 ft NGVD of 1929.
REMARKS - U.S. Army Corps of Engineers satellite gage-height telemeter at station. Maximum discharge, 23,100 ft³/s, from rating curve extended above 16,000 ft³/s on basis of slope-area measurements at gage heights 12.76 ft and 13.40 ft. Water-quality records for some prior periods have been collected at this location.
