As you drive along Route 15 North of Helena, Mt you pass a sign that says, Gates of the Mountains. This is when you know you are getting close to the famous tailwater section of the Missouri River, from Holter Dam to Cascade, 40 miles of trout heaven. At certain times of the year, it feels like you are floating in an aquarium, watching groups of massive rainbows slice through the water under your drift boat; it’s a sight to behold. The Missouri River offers one of the best opportunities to catch a 20 inch” plus trout on a dry fly anywhere in Montana. This is a dry fly destination you will want to have on your bucket list.
When to come Fly Fishing on the Missouri River
The Missouri River can fish well almost any time of the year if the weather cooperates. I would suggest picking your favorite hatch and planning your trip around that time, or the type of fishing you enjoy most.
April and May – Fewer people and the fishing can be outstanding. Be prepared for anything typically Nymphing in the morning with the possibility to see some topwater action on blue-winged olives, March Browns, and caddis in the afternoon. The weather this time of year can do anything so bring lots of layers. If streamers are your thing, this is a great time to move some big fish.
June and July 20th– Probably the most popular time to come fish the Missouri River – PMD’s and Caddis are the primary hatches. This is one of my favorite times to throw dry flies on the Missouri, the sheer number of bugs at times is breathe taking. When you watch a 20+ inch fish repeatedly come up to sip a fly off the surface don’t be surprised if you find yourself consumed with catching that one fish. If Nymphing is your preferred method it can be off the charts this time of the year due to the number of bugs drifting in the current. Even better blend the two, chase the big risers and throw Nymphs for part of the day you won’t be disappointed.
Late July and August – This is Trico and hopper time – Early in the morning on the right days, you will find clouds of Tricos. Pick your method they will eat the Nymph or Drys for this hatch. After the Trios slow down you can try your hand at raising a big boy on a Hopper or as evening sets look for some caddis on top, lots of options to keep you hooked up.
Sept and October – The leaves are changing and so are the seasons gone are the crowds but the fish are hungry. Look for blue-winged olives, Pseudo’s, October caddis and even a few tricos left in September. Keep your streamer rod nearby as well this a great time to hook the big boys getting ready before winter sets in.