The Missouri River is the longest river in North America stretching over 2,300 miles. Beginning in Montana’s Rocky Mountains. The Missouri is formed at the confluence of the Madison, Jefferson, and Gallatin rivers near Three Forks Montana. Its size and grandeur are matched only by its significance in history, as it played a vital role in the Lewis and Clark expedition. Today, the river continues to captivate adventurers and fly fishers with its untamed beauty and exceptional blue ribbon fishing opportunities. The river below Holter Dam, near Craig, Montana, is a legendary destination for fly anglers. This section of the river is renowned for its clear waters, consistent flows, and prolific insect hatches, creating some of the best conditions for fly fishing in the world. Whether you’re chasing wild brown trout or hefty rainbows, the Missouri offers year-round action and challenges for anglers of all skill levels.
Trout Species on the Missouri River
The Missouri River is home to a variety of trout species, with rainbow trout being the most prevalent. Brown trout also thrive here. Fish counts from Holter dam to Craig are in a historic high of 8000 fish per mile with 1200 being Brown trout. The trout in this section are known for their size and strength, with many fish measuring over 18 inch. Trout in the 20+ inch range are not uncommon. The scenery along this stretch is stunning, with rugged cliffs, rolling hills, and wide-open skies that Montana is famous for. The river is accessible from various public access points, making it easy for anglers to fly fish the Missouri.
Best Seasons for Fly Fishing the Missouri River
Each season brings its own delights for fly anglers on the Missouri River.
Spring heralds the beginning of the fishing season, with the river awakening from its winter slumber. As temperatures rise, hatches become more prolific, and trout become increasingly active, eagerly feeding on emerging insects.
Summer brings long days and warm temperatures with prolific hatches of caddis, PMD’s, terestals and trico mayflies.
Fall casts a spell of tranquility over the Missouri River. The crowds thin, and the landscape transforms into a kaleidoscope of vibrant colors. Cooler temperatures trigger a resurgence of insect activity, with blue-winged olives and midges dominating the menu. It’s a season of quiet and the chance to land some of the river’s largest trout before winter sets in.
Winter may seem like an unlikely time to fish, but it offers solitude and the opportunity to catch trophy trout. Midge hatches provide the main source of sustenance for trout during these colder months. Nymphing deep pools and runs can yield impressive results.
The Land of Giants Section of the Missouri River
This famed stretch of the Missouri River is just a short drive from downtown Helena. Flowing from Hauser Dam down to upper Holter lake. The Land of the Giants is truly a world class trout fishery. It is not uncommon to see large rainbow trout in the 22-24″ range with some fish pushing the 30″ mark. In addition, The Land of the Giants can provide anglers with opportunities at Kokanee salmon and Walleye. While some wade fishing opportunities are available, the Land of the Giants is best fished with a jet boat.
