Idaho · Unknown Co.

South Fork of the Snake River

· 66 mi · Class
Optimal: 7000–21100 CFS · USGS #13341050
43°F — Cold water immersion risk — review cold water safety before launching
14,069 avg
28,100CFS
10.99 ft gauge height
Above Optimal
Stable(-200 in 3h)
Flow data is live from USGS·Rapid classifications and CFS ranges need community verification·Know this river?
Avg flow: 14,069 cfsHist. median: 0 cfsUSGS #13341050
Bureau of Land Mangement

The South Fork of the Snake River flows for 66 miles across southeastern Idaho, through high mountain valleys, rugged canyons, and broad flood plains to its confluence with the Henrys Fork of the Snake near the Menan Buttes. The river flows northwest from Palisades Dam in Swan Valley. For the first nine miles, the river runs through a narrow channel, then widens and flows around several island complexes. A waterfall can be seen just upstream from the Swan Valley Bridge where Fall Creek cascades into the river.

10-Year Flow Patterns
See 10 years of flow patterns for this river — historical analysis is a Pro feature.Upgrade to Pro →
Your Optimal Range
Set your personal optimal CFS window per river — custom ranges are a Pro feature.Upgrade to Pro →
Data Quality

River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.

Know the South Fork of the Snake River? Your local knowledge makes this page better for every paddler, angler, and guide who comes after you.
Improve This River →