River gauges›Pennsylvania
RIVER GAUGE · SUSQUEHANNA RIVER

Susquehanna River at Marietta

Lancaster County, Pennsylvania

Water level36.03 ft
Flow25,600 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action44 ft
Minor flood49 ft
Moderate flood52 ft
Major flood54 ft

The past week

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What floods at each level

Highest crests on record

DateLevelFlow
Jun 22, 197264.54 ft1,080,000 cfs
Mar 18, 193660.73 ft787,000 cfs
Jun 1, 188958.3 ft630,000 cfs

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