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Montana
South Fork Sun River
No verdict for this water
We won't guess. Here is exactly what we do and don't know.
What we do know
Inside Helena-Lewis and Clark National Forest
3 managing-area boundaries mapped — agency alerts for them feed this page automatically.
Boundary data
What's missing
No access route mapped
We don't yet know which road reaches this trailhead, so we can't tell you if it's gated.
Nobody's filed a report here yet — be the first.
Why you'll love it
River facts
- Water
- Flows year-round
- Average flow
- 153 cfs
- Average current
- 1.3 ft/s
- Gradient
- 84.5 ft/mi
- Drainage area
- 115 sq mi
Long-term averages modeled by USGS (NHDPlus HR), not today's conditions. Check a gauge before you go.
Here's your day on the water, mapped
South Fork Sun River
AI-suggested draft · review before you go
Photos
Directions & GPX
Permits & access
- Managing agency
- Forest Service
About this water
South Fork Sun River is a 13-mile paddling stretch near Augusta, Montana. It flows year-round. USGS models an average flow of about 153 cfs and a gradient of about 84.5 feet per mile. Land along it is managed by the U.S. Forest Service.
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Keep exploring — more water worth the drive
Photo: Qfl247 (Transferred by Citypeek/Original uploaded by Qfl247), CC BY-SA 3.0 (via Wikimedia Commons)Sun River
~22 min drive
Sun River is a 0.1-mile paddling stretch near Augusta, Montana. It flows year-round. USGS models an average flow of about 894 cfs. Land along it is managed by the U.S. Forest Service.
Gibson Boating Site
~22 min drive
A worthwhile stop near Montana.
Lowry Bridge
~1h 12m drive
A worthwhile stop near Montana.
Photo: Jet Lowe, Public domain (via Wikimedia Commons)Dearborn River
~29 min drive
Dearborn River is a 19-mile paddling stretch near Augusta, Montana. It flows year-round. USGS models an average flow of about 77 cfs and a gradient of about 82.8 feet per mile. Land along it is managed by the U.S. Forest Service.
Home Gulch Boat Launch
~25 min drive
A worthwhile stop near Montana.
Photo: Bswc blackfootchallenge, CC BY-SA 4.0 (via Wikimedia Commons)Clearwater River
~56 min drive
Clearwater River is a 13-mile paddling stretch near Seeley Lake, Montana. It flows year-round. USGS models an average flow of about 406 cfs and a gradient of about 46.0 feet per mile. Land along it is managed by the U.S. Forest Service.
Holland Lake Boating Site
~57 min drive
A worthwhile stop near Montana.
Photo: Public domain (via Wikimedia Commons)South Fork Flathead River
~1h 2m drive
South Fork Flathead River is a 0.3-mile paddling stretch near Essex, Montana. It flows year-round. USGS models an average flow of about 2,174 cfs. Land along it is managed by the U.S. Forest Service.
Lindbergh Lake Boating Site
~1h 6m drive
A worthwhile stop near Montana.
Photo: mypubliclands, Public domain (via Wikimedia Commons)Blackfoot River
~1h 2m drive
Blackfoot River is a 13-mile paddling stretch near Lincoln, Montana. It flows year-round. USGS models an average flow of about 50 cfs and a gradient of about 40.8 feet per mile.
