River gauges›West Virginia
RIVER GAUGE · SOUTH BRANCH POTOMAC RIVER

South Branch Potomac River near Petersburg

Grant County, West Virginia

Water level3.78 ft
Flow112 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action12 ft13,500 cfs
Minor flood14 ft24,400 cfs
Moderate flood15 ft29,800 cfs
Major flood17 ft41,700 cfs

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
Jun 16, 194922.83 ft62,000 cfs
Sep 6, 199622.2 ft113,000 cfs
Nov 4, 198521.8 ft130,000 cfs

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