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Machias River at Machias (in MLLW)

National Weather Service gauge MCSM1 · Maine · Washington County · 44.7195, -67.4496

Stage at this gauge is reported in MLLW.

Flood levels

Official flood levels at this gauge: action stage begins at 16.5 ft; minor flooding begins at 17.0 ft; moderate flooding begins at 18.0 ft; major flooding begins at 19.0 ft.

Action stage16.5 ft
Minor flooding17.0 ft
Moderate flooding18.0 ft
Major flooding19.0 ft

Highest recorded crests

What the water does

National Weather Service impact statements for this gauge, in the Weather Service's own words.

17.0 ftMinor Flooding. Water begins to flood business parking lot near Route 1 causeway.
18.0 ftModerate Flooding. Properties along the Machias River will become surrounded. Route 1 will begin flooding at the causeway. Backwater issues will cause flooding in low lying areas along Route 1 between Short Street to the Causeway and along Court Street.
19.0 ftWidespread Major Flooding of Machias area near the water. Up to 2 feet of water over Route 1 at the causeway. Significant inundation of water into structures between Short Street and the Route 1 Causeway in Machias. Moderate flooding of low lying areas upstream along the Machias River in the Middle River Reservoir.

Forecast office: NWS Caribou · River Forecast Center: Northeast River Forecast Center.

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