River gauges›Pennsylvania
RIVER GAUGE · MONONGAHELA RIVER

Monongahela River at Maxwell Lock and Dam (lower pool)

Fayette County, Pennsylvania

Water level10.14 ft
Flow6,220 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action23.5 ft
Minor flood32 ft
Moderate flood34 ft
Major flood36 ft

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
Nov 4, 198544.4 ft—
Mar 6, 196738.2 ft—
Mar 4, 196338 ft—

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