Minor Flood
8.5 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Action Stage
7.5 ft
What Floods at Each Level
9.5 ft
Similar 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 ft
Minor 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 ft
Increasingly 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.
Impact statements from the National Weather Service, describing what typically happens at each water level.
Low-Water Impacts
5 ft
Stage needed to inundate designated Gulf Sturgeon critical habitat below Jim Woodruff Lock and Dam.
3 ft
Temporary (not sustainable) operating level for of Scholz Power Plant
What happens as water levels drop, per the National Weather Service.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Dec 19, 2023 | 9.6 ft | 6,819 cfs |
About This Gauge
USGS Site
NWS LID
GLMM1
River
E. Branch of Penobscot
County
Penobscot, ME
Coordinates
46.1343°N, 68.7939°W
Get Flood Alerts for E. Branch of Penobscot
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 E. Branch of Penobscot Below Grand Lake Matagamon?
The E. Branch of Penobscot Below Grand Lake Matagamon gauge is maintained by USGS (site 01029100) 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 E. Branch of Penobscot Below Grand Lake Matagamon?
The NWS-defined flood stage for E. Branch of Penobscot Below Grand Lake Matagamon is 8.5 feet. Action stage begins at 7.5 feet. Moderate flooding starts at N/A feet, and major flooding at N/A feet.
How do I get alerts when E. Branch of Penobscot rises?
Download StormCast free on Google Play, go to River Gauges, and add E. Branch of Penobscot Below Grand Lake Matagamon 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 E. Branch of Penobscot Below Grand Lake Matagamon gauge located?
The gauge is located in Penobscot County, Maine at coordinates 46.1343°N, 68.7939°W. USGS site number: 01029100. Data is provided by the U.S. Geological Survey and the National Weather Service.
On This River
Downstream: Penobscot River above Grindstone
More Resources
Source & Notes
Data provided by: Observations courtesy of US Geological Service
- Stage may be affected by ice.
- Stage may be affected by ice.
- Flood stages have not been defined for this location.