Around here
Around East Branch Penobscot River
Data Source: Recreation.gov · Source: USGS GNIS · Source: National Park Service. No claim to original U.S. Government works. · Public land: USGS PAD-US
About this river
East Branch Penobscot River is a 57.4 mile river. Streamflow is measured at the USGS gauge East Branch Penobscot River at Grindstone, Maine (site 01029500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1903 to 2026
East Branch Penobscot River typically runs highest in April, at a median 4,365 cfs, and lowest in September, at 671 cfs. The highest flow on record for any single day is 33,700 cfs, in 1923.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 1,030 | 680 to 1,380 |
| February | 865 | 571 to 1,240 |
| March | 1,150 | 635 to 1,700 |
| April | 4,365 | 3,025 to 6,385 |
| May | 4,190 | 2,570 to 5,530 |
| June | 1,730 | 1,130 to 2,670 |
| July | 996 | 702 to 1,370 |
| August | 690 | 489 to 1,080 |
| September | 671 | 459 to 1,045 |
| October | 852 | 485 to 1,490 |
| November | 1,300 | 768 to 2,285 |
| December | 1,180 | 752 to 2,120 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 105 years of record. Statistics published by the US Geological Survey for East Branch Penobscot River at Grindstone, Maine (site 01029500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
6 mapped launches sit in the mapped area of East Branch Penobscot River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Penobscot RiverPenobscot RiverPublic
- Quakish Lake (Green Bridge)Quakish LakePublic
- Dolby Pond (Rt.11 Main St.)Dolby PondPublic
- Ambajejus LakeAmbajejus LakePublic
- Millinocket LakeMillinocket LakePublic
- Sawtelle DeadwaterSawtelle DeadwaterPublic
Made to print
Put East Branch Penobscot River on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show East Branch Penobscot River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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