Within the Idaho borders, the most recognized section of the Snake River for fly fishing is commonly referred to as the South Fork, a 66-mile stretch that starts below the Palisades Dam and flows through stark canyons, looming valleys and broad flood plains until it reaches Henry’s Fork near Menan Buttes. Ranked as the one of the most productive Blue Ribbon Rivers in the US, its last census counted over 5000 fish per mile. Since 1985, the River has been included in the nation’s Wild and Scenic River System, boding well for its preservation and future.

 

Home to the largest riparian cottonwood gallery forest in the West, it is considered by naturalists to be among the most diverse ecosystems in Idaho. In addition to the cottonwoods, it is also home to over 120 avian species, including raptors, songbirds, shorebirds and game birds, earning it a distinctive “National Important Bird Area” designation. Outside of Yellowstone National Park, the South Fork corridor also contains the country’s largest native cutthroat fishery and an extensive population of other wildlife including moose, deer, elk, mountain goats, mountain lions, black bears, bobcats, coyotes, river otter, beaver, fox and mink.

 

Famous for its large summer stoneflies, with Salmon flies often reaching 3 inches in length, the best dry fly fishing is during the months of July and August. The hatches in the first half of July are so prolific that fish readily come to the surface in great numbers to seize the appetizing display. By the first week of August many fish have already been caught and released and become more hesitant to bite. At this point experts suggest employing emerger and cripple patterns, especially if the fish are feeding in the South Fork’s riffles and back channels. Lodging and guided trips are widely available.