E. Branch of Penobscot Below Grand Lake Matagamon, ME
River level and flood forecast · Penobscot County
Normal2.5 ftas of Mon 10:45 PM
The river is 6.0 ft below flood stage (8.5 ft).
Flow: 194 cubic feet per second (USGS).
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 E. Branch of Penobscot Below Grand Lake Matagamon to flood, when it floods, and when it's over.
Flood stages
| Flood stage | 8.5 ft |
| Action stage | 7.5 ft |
| Record crest (December 19, 2023) | 9.6 ft |
What floods at each level
From the National Weather Service, highest first.
- 9.5 ftSimilar flooding to December 19th, 2023 with extremely dangerous flows greater than 6800cfs downstream from Grand Lake Matagamon Dam to Spencer Rips. All campsites inundated with 1 to 2 feet of moving water upstream of the Grand Lake Road bridge on the left bank side of the river. Several campsites downstream of Grand Lake Road bridge flooded to the Katahdin Woods and Waters Monument on the right bank side of the river.
- 8.5 ftMinor flooding is occuring with extremely dangerous flows greater than 5800cfs from the Grand Lake Matagamon Dam. Campsites on the left bank upstream of the Grand Lake Road bridge will become inaccessible. Campsites begin flooding downstream of the bridge on the right bank. Campsites will be flooding downstream in the Katahdin Woods and Waters Momument land including areas from The Oxbow to Grand Pitch.
- 7.5 ftIncreasingly dangerous flows being discharged from the Grand Lake Matagamon Dam upstream. Water will begin flooding low lying campsites on the right bank downstream of the Grand Lake Road bridge. Water will be approaching the campsites on the left bank upstream of the Grand Lake Road bridge.
Highest crests on record
- 9.6 ft — December 19, 2023
Recent crests: 9.6 ft (December 19, 2023)
Up and down the river, and nearby
- DownstreamPenobscot River above Grindstone, ME
- Seboeis River near Shin Pond, ME
- Aroostook River at Masardis, ME
- Wytopitlock Stream near Reed Plantation, ME
- Meduxnekeag River above South Branch near Houlton, ME
- Pearce Brook near Houlton, ME
- Meduxenkeag River at Lowery Rd near Houlton, ME
- Mattawamkeag River at Mattawamkeag, ME
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (GLMM1); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.