River gauges›Pennsylvania
RIVER GAUGE · MONONGAHELA RIVER

Monongahela River at Charleroi Lock and Dam

Westmoreland County, Pennsylvania

Water level8.56 ft
Flow—
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action22.6 ft
Minor flood28 ft
Moderate flood31 ft
Major flood35 ft

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
Nov 4, 198542.7 ft—
Mar 8, 196741.1 ft—
Mar 17, 193639.9 ft—

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