East Branch Penobscot River at Grindstone, Maine
Is East Branch Penobscot River at Grindstone, Maine flooding right now?
East Branch Penobscot River at Grindstone, Maine measured 4.78 ft on 2026-09-11 01:00:00 UTC. That observation was 9.2 ft below its 14 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
4.78 ft
Streamflow
521 cfs
Minor flooding here begins at 14 ft, with major flooding at 17 ft. The highest crest on record was 16.9 ft on Mon, Apr 30, 1923.
Flood forecast
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 11.5 ft | 6.7 ft below |
| Minor flood | 14 ft | 9.2 ft below |
| Moderate flood | 16 ft | 11.2 ft below |
| Major flood | 17 ft | 12.2 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 16.9 ft | 1923-04-30 |
| 15.02 ft | 2008-04-30 |
| 14.71 ft | 1973-04-29 |
| 14.67 ft | 2023-12-19 |
| 14.3 ft | 1909-09-29 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Penobscot River near Mattawamkeag, ME | 14.4 mi | Penobscot County |
| Wytopitlock Stream near Wytopitlock Maine | 20.8 mi | Aroostook County |
| Mattawamkeag River near Mattawamkeag, Maine | 20.9 mi | Penobscot County |
| Seboeis River near Shin Pond, Maine | 28.6 mi | Penobscot County |
| E. Br. Penobscot River below Grand Lake Matagamon | 29.6 mi | Penobscot County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.