River gauges›Massachusetts
RIVER GAUGE · CHARLES RIVER

Charles River at Waltham

Middlesex County, Massachusetts

Water level0.81 ft
Flow38 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action4 ft
Minor flood5 ft
Moderate flood7 ft
Major flood9 ft

The past week

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Highest crests on record

DateLevelFlow
Mar 15, 20107.56 ft3,811 cfs
Feb 2, 19766.54 ft4,150 cfs
Jan 24, 19796.48 ft3,480 cfs

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