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Around West Branch Penobscot River
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Source: USGS GNIS · Public land: USGS PAD-US
About this river
West Branch Penobscot River is a 39.6 mile river. Streamflow is measured at the USGS gauge S. Br. Penobscot River nr Canada Falls Lake, Maine (site 01027240). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
2017 to 2026
West Branch Penobscot River typically runs highest in April, at a median 1,010 cfs, and lowest in September, at 78 cfs. The highest flow on record for any single day is 7,650 cfs, in 2024.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 179 | 132 to 219 |
| February | 122 | 69 to 161 |
| March | 212 | 125 to 456 |
| April | 1,010 | 512 to 1,880 |
| May | 288 | 197 to 705 |
| June | 142 | 90 to 281 |
| July | 110 | 92 to 241 |
| August | 97 | 62 to 181 |
| September | 78 | 52 to 197 |
| October | 81 | 55 to 164 |
| November | 182 | 71 to 319 |
| December | 217 | 157 to 594 |
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 10 years of record. Statistics published by the US Geological Survey for S. Br. Penobscot River nr Canada Falls Lake, Maine (site 01027240). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
3 mapped launches sit in the mapped area of West Branch Penobscot River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Lobster StreamLobster StreamPublic
- Seboomook LakeSeboomook LakePublic
- Seboomook LakeSeboomook LakePublic
Made to print
Put West 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 West 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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