South Fork Flathead River
Near Bigfork, Montana
The South Fork Flathead River originates in the Bob Marshall Wilderness and flows through some of the most remote and pristine country in the lower 48 states before entering Hungry Horse Reservoir. This wilderness river offers exceptional fishing for native westslope cutthroat trout and threatened bull trout in crystal-clear water surrounded by stunning mountain scenery. Access requires multi-day backpacking or horseback trips into the Bob Marshall Wilderness, making this a true adventure destination. Outfitters offer guided float trips through the wilderness canyon during the short summer season. The South Fork is approximately 98 miles long, making it the second-longest tributary of the Flathead system. Hatches of caddis, mayflies, spruce moths, and terrestrials provide dry fly opportunities throughout summer. Anglers must be prepared for wilderness travel and should practice catch-and-release to protect the wild fish populations. This is bucket-list fishing for those seeking a genuine Montana wilderness experience.