Machias River at Machias (in MLLW)

Highest listed crest 19.49 ftFlood stage 17.0 ft2 crests since 2024

The Machias River at Machias (in MLLW) crested at major flood stage 1 time among the 2 crests the National Weather Service lists from 2024 to 2024. The highest, 19.49 ft on January 10, 2024, was major flooding, 2.49 feet above flood stage.

The gauge

Highest listed crest: 19.49 ft; January 10, 2024
Flood stage: 17.0 ft; Major flooding from 19.0 ft
Crests at major: 1; 16th of 55 gauges in Maine
Most recent flood crest: August 11, 2024; 17.93 ft, minor flooding
Location: Washington County; Maine
Identifiers: NWS MCSM1; No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Machias River at Machias (in MLLW)

Action stage	16.5	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	17.0	1	Aug 11, 2024	Minimal or no property damage, but possibly some public threat
Moderate flood stage	18.0	0	—	Some inundation of structures and roads near the stream
Major flood stage	19.0	1	Jan 10, 2024	Extensive inundation of structures and roads

Every listed crest

2 crests from 2024 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Machias River at Machias (in MLLW)

1	Jan 10, 2024	19.49	+2.49	Major	—
2	Aug 11, 2024	17.93	+0.93	Minor	—

Other gauges in Washington County

Flood gauges in Washington County

Grand Lake Stream at Grand Lake Stream	7.0	7.75 ft, Dec 2, 2005
Gulf of Maine at Cutler Farris Wharf (IN MLLW)	18.0	19.02 ft, Apr 10, 2020
Wesley	8.5	8.91 ft, Dec 14, 2010
Passamamaquoddy Bay at Eastport (IN MLLW)	22.5	24.34 ft, Apr 10, 2020
Baring	12.0	12.76 ft, May 29, 1961
Vanceboro	10.0	11.28 ft, Jun 3, 1984

Washington County: every hazard · River floods across the country · Maine

NOAA National Water Prediction Service, gauge MCSM1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.