Allagash River above Allagash
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
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Observed (OBS) 04/04/2025 12:00 PM EDTRecord: 19.8 ftCATEGORY STAGE 
Major Flooding 19 ft Moderate Flooding 17 ft Minor Flooding 15 ft Action 13 ft Reliability of the Forecast:
NOTE: Forecasts are issued as needed during times of high water, but are not routinely available.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 19 - Widespread 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 - Significant 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 - Minor low lying flooding occurs between Allagash Falls and the town of Allagash. River campsites flooded between McGargle Rocks to Eliza Hole Rapids.
Gauge Info
| Coordinates | 47.0697, -69.0794 |
| RFC | NERFC |
| State | ME |
| WFO | CAR |
| County | Aroostook |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 01011000 |
Gauge Location
Recent Crests
| 1. | 8.56 ft | on 04-14-2024 |
| 2. | 8.02 ft | on 12-19-2023 |
| 3. | 10.11 ft | on 04-19-2023 |
| 4. | 9.28 ft | on 04-17-2022 |
| 5. | 7.63 ft | on 04-11-2021 |
Recent Crests
| 1. | 8.56 ft | on 04-14-2024 |
| 2. | 8.02 ft | on 12-19-2023 |
| 3. | 10.11 ft | on 04-19-2023 |
| 4. | 9.28 ft | on 04-17-2022 |
| 5. | 7.63 ft | on 04-11-2021 |
| 6. | 8.77 ft | on 05-03-2020 |
| 7. | 11.91 ft | on 04-23-2019 |
| 8. | 11.84 ft | on 04-28-2018 |
| 9. | 10.03 ft | on 04-29-2017 |
| 10. | 11.10 ft | on 05-05-2011 |
| 11. | 10.22 ft | on 04-05-2010 |
| 12. | 14.89 ft | on 04-30-2008 |
| 13. | 13.18 ft | on 04-24-2007 |
| 14. | 12.98 ft | on 04-16-1994 |
| 15. | 19.78 ft | on 04-10-1991 |
| 16. | 17.55 ft | on 04-06-1988 |
| 17. | 12.37 ft | on 04-17-1984 |
| 18. | 19.48 ft | on 04-18-1983 |
| 19. | 12.76 ft | on 04-05-1981 |
| 20. | 12.63 ft | on 04-25-1978 |
| 21. | 14.43 ft | on 04-03-1975 |
| 22. | 12.33 ft | on 04-29-1973 |
| 23. | 13.83 ft | on 04-26-1970 |
| 24. | 12.21 ft | on 05-17-1961 |
| 25. | 14.16 ft | on 04-23-1960 |
| 26. | 12.28 ft | on 03-31-1953 |
| 27. | 13.14 ft | on 05-01-1939 |
| 28. | 14.22 ft | on 04-22-1933 |
Historic Crests
| 1. | 19.78 ft | on 04-10-1991 |
| 2. | 19.48 ft | on 04-18-1983 |
| 3. | 17.55 ft | on 04-06-1988 |
| 4. | 14.89 ft | on 04-30-2008 |
| 5. | 14.43 ft | on 04-03-1975 |
Historic Crests
| 1. | 19.78 ft | on 04-10-1991 |
| 2. | 19.48 ft | on 04-18-1983 |
| 3. | 17.55 ft | on 04-06-1988 |
| 4. | 14.89 ft | on 04-30-2008 |
| 5. | 14.43 ft | on 04-03-1975 |
| 6. | 14.22 ft | on 04-22-1933 |
| 7. | 14.16 ft | on 04-23-1960 |
| 8. | 13.83 ft | on 04-26-1970 |
| 9. | 13.18 ft | on 04-24-2007 |
| 10. | 13.14 ft | on 05-01-1939 |
| 11. | 12.98 ft | on 04-16-1994 |
| 12. | 12.76 ft | on 04-05-1981 |
| 13. | 12.63 ft | on 04-25-1978 |
| 14. | 12.37 ft | on 04-17-1984 |
| 15. | 12.33 ft | on 04-29-1973 |
| 16. | 12.28 ft | on 03-31-1953 |
| 17. | 12.21 ft | on 05-17-1961 |
| 18. | 11.91 ft | on 04-23-2019 |
| 19. | 11.84 ft | on 04-28-2018 |
| 20. | 11.10 ft | on 05-05-2011 |
| 21. | 10.22 ft | on 04-05-2010 |
| 22. | 10.11 ft | on 04-19-2023 |
| 23. | 10.03 ft | on 04-29-2017 |
| 24. | 9.28 ft | on 04-17-2022 |
| 25. | 8.77 ft | on 05-03-2020 |
| 26. | 8.56 ft | on 04-14-2024 |
| 27. | 8.02 ft | on 12-19-2023 |
| 28. | 7.63 ft | on 04-11-2021 |
Vertical Datum Table
| type | NGVD29 |
|---|---|
| major Flooding | 623.60 ft |
| moderate Flooding | 621.60 ft |
| minor Flooding | 619.60 ft |
| action | 617.60 ft |
| Latest Value | 609.06 ft |
| Gauge Zero | 604.60 ft |
Unique Local Info
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Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels |
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| 3 Day (SREF) | 7 Day (NAEFS) | 7 Day (GEFS) |
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Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.
See the Product Description Document link for more details on the interpretation of the 3,7 day graphics.
Click individual graphics to enlarge.
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.