Major Flood
19 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: MCSM1). Live data may be limited. View on NWS AHPS →
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
18 ft
Minor Flood
17 ft
Action Stage
16.5 ft
What Floods at Each Level
19 ft
Widespread 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.
18 ft
Moderate 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.
17 ft
Minor Flooding. Water begins to flood business parking lot near Route 1 causeway.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jan 10, 2024 | 19.49 ft | — |
| Jan 13, 2024 | 18.83 ft | — |
| Aug 11, 2024 | 17.93 ft | — |
About This Gauge
NWS LID
MCSM1
River
Machias River
County
Washington, ME
Coordinates
44.7195°N, 67.4496°W
Get Flood Alerts for Machias River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Machias River at Machias (in MLLW)?
The Machias River at Machias (in MLLW) gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Machias River at Machias (in MLLW)?
The NWS-defined flood stage for Machias River at Machias (in MLLW) is 17 feet. Action stage begins at 16.5 feet. Moderate flooding starts at 18 feet, and major flooding at 19 feet.
How do I get alerts when Machias River rises?
Download StormCast free on Google Play, go to River Gauges, and add Machias River at Machias (in MLLW) to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Machias River at Machias (in MLLW) gauge located?
The gauge is located in Washington County, Maine at coordinates 44.7195°N, 67.4496°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Hohonu / NERACOOS
- The tide heights shown above reference the <a href="https://tidesandcurrents.noaa.gov/datum_options.html"> mean lower low water (MLLW) </a> tidal datum.