In southeastern Idaho, the South Fork Snake River is an excellent tailwater fly fishing area starting below the Palisades Dam on the Idaho/Wyoming border. The blue-ribbon trout river flows for 60 miles for you to explore. You can expect to find plenty of cutthroat trout, rainbow trout and brown trout (up to 20+ inches).
The upper section stretches from the Dam downstream about fifteen miles with big mountain water. This section is dominated by cutthroat trout and is best starting in early July through September. It is access by several points along SR26 and at the Conant Valley Access. There are good hatches of caddis, golden stones and baetis that make for good dry fly fishing.
The Lower section of the South Fork Snake River for fly fishing is considered from the Conant Valley Access to the confluence with the Henrys Fork. This section is 49 miles long. The first 24 miles run through a big canyon with limited access, so its better for floating. The latter portion runs through farmlands.
While wading is possible, it is generally not easy. The South Fork Snake River is a floaters river for fly fishing. There are swift currents and deep pools.
Overall, South Fork Snake River is the 5th most popular fly fishing river of all 17 fly fishing spots in Idaho.