Allagash River above Allagash, ME
River level and flood forecast · Aroostook County
The river is 13.1 ft below flood stage (15 ft).
Flow: 257 cubic feet per second (USGS).
Much lower than normal for October 13.
Usual for October 13: 424 to 1,620 cubic feet per second (the middle half of 97 years).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Allagash River above Allagash to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 19 ft |
| Moderate flood stage | 17 ft |
| Flood stage | 15 ft |
| Action stage | 13 ft |
| Record crest (April 10, 1991) | 19.78 ft |
What floods at each level
From the National Weather Service, highest first.
- 19 ftWidespread significant flooding upstream of Eliza Hole Rapids. Michaud Tote Road and Inn Road impassable. Numerous camp roads flooded. River side campsites between Allagash Falls and Eliza Hole Rapids completely inundated. Flooding similar to April 1983 and 1991.
- 17 ftSignificant flooding of Michaud Tote Road and Inn Road in the town of Allagash. Floodwaters threaten Route 161 in the town of Allagash combined with St. John River conditions. Campsites inundated between Allagash Falls and Eliza Hole Rapids.
- 15 ftMinor low lying flooding occurs between Allagash Falls and the town of Allagash. River campsites flooded between McGargle Rocks to Eliza Hole Rapids.
- 13 ftRiver approaches bankfull. River begins to threaten low lying campsites between Allagash Falls and Eliza Hole Rapids.
Highest crests on record
- 19.78 ft — April 10, 1991
- 19.48 ft — April 18, 1983
- 17.55 ft — April 6, 1988
- 14.89 ft — April 30, 2008
- 14.43 ft — April 3, 1975
Recent crests: 8.72 ft (April 28, 2025) · 8.56 ft (April 14, 2024) · 8.02 ft (December 19, 2023) · 10.11 ft (April 19, 2023) · 9.28 ft (April 17, 2022)
Highest flow on record
40,900 cubic feet per second — April 30, 2008. From the USGS's yearly peaks since 1932.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (ALLM1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.