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Water-Year Summary for Site 02049500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
02049500 BLACKWATER RIVER NEAR FRANKLIN, VA
LOCATION - Lat 36°45'45", long 76°53'55" referenced to North American Datum of 1927, Southampton County, VA, Hydrologic Unit 03010202, on right bank 0.4 mi south of Burdette, 0.5 mi upstream from Black Creek, 3.3 mi downstream from Corrowaugh Swamp, and 6.0 mi north of Franklin.
DRAINAGE AREA - 613 mi².
REVISIONS HISTORY - WSP 2104: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1944 to current year.
GAGE - Water-stage recorder. Datum of gage is 0.00 ft NAVD of 1988.
REMARKS - Low flow reversed by tide some years. Occasional diversion upstream from station. Maximum discharge, 23,000 ft³/s, from rating curve extended above 12,800 ft³/s. Water-quality records for some prior periods have been collected at this location.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in August 1940 reached a stage of about 22 ft, discharge, 21,000 ft³/s, from rating curve extended above 9,400 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum peak flow, 23,000 ft³/s, Sept. 18, 1999, gage height 26.27 ft, from floodmarks. Probably occurred this date. Instantaneous low flow, not determined, tidally affected most years during periods of extreme low flows; minimum measured flow, 2.4 ft³/s (reverse flow), Sept. 17, 1952.