East Branch Penobscot River at Grindstone, Maine

Penobscot County, Maine · USGS gauge 01029500 · NWS GRNM1 · Maine river levels

Is East Branch Penobscot River at Grindstone, Maine flooding right now?

No — East Branch Penobscot River at Grindstone, Maine is at 4.88 ft, 9.1 ft below its 14 ft flood stage, as of 2 hours ago.

Gauge height
4.88 ft
as of 2 hours ago
Streamflow
621 cfs
data refreshed 14 min ago

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

NWS forecast, issued 10 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

CategoryStageCurrent distance
Action11.5 ft6.6 ft below
Minor flood14 ft9.1 ft below
Moderate flood16 ft11.1 ft below
Major flood17 ft12.1 ft below

Highest crests on record

StageDate
16.9 ft1923-04-30
15.02 ft2008-04-30
14.71 ft1973-04-29
14.67 ft2023-12-19
14.3 ft1909-09-29

Nearby gauges

GaugeDistanceCounty
PENOBSCOT RIVER NEAR MATTAWAMKEAG, ME14.4 miPenobscot County
Wytopitlock Stream near Wytopitlock Maine20.8 miAroostook County
Mattawamkeag River near Mattawamkeag, Maine20.9 miPenobscot County
Seboeis River near Shin Pond, Maine28.6 miPenobscot County
E. Br. Penobscot River below Grand Lake Matagamon29.6 miPenobscot County
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.

Sources: USGS monitoring location · NWS gauge & forecast