Late May Missouri River Fishing Report

Steve with one of several streamer eating bows.
The summer season unofficially began yesterday with Memorial Day and coincidentally we saw flows on the river decrease daily over the weekend making it look and feel a little more like the river we’ve become accustomed to in late spring with flows in the 8700 cfs range, clearing water and the fish returning to the faster water in which you’d normally expect to find them.
The weather is feeling like summer as well with plenty of sunshine, highs in the low 80’s and scattered thunderstorms popping up here and there daily. We’ll close out May with temps near 90 tomorrow before things return to more seasonably normal conditions towards the end of the week.
The official word on flows has things holding in the 8500 cfs range for the time being. We’re anxiously awaiting the updated operations report and flow forecast for June from the Bureau of Reclamation and we will share that with you as soon as we get it. There’s still a fair amount of talk about big water due to the well above average snow pack in the high country but as you can see the current SNOTEL map is indicating a somewhat gradual but steady reduction of snowpack in our region which is now in that 90 – 109 % of average range indicated by the color green.

11,000 cfs was fun, like a whole new river with fish fleeing to the slow depths and consistently eating sow bugs and the like presented at or near the bottom. These substantial drops in flows over the past few days have made things interesting and a little challenging depending on the day,but from what it sounds like from most of yesterday’s reports things may be settling. It’s transition time so while you shouldn’t necessarily abandon the worm/sow rigs it’s definitely time to start adding mayfly nymphs into the equation. Little Green Machines, Peep Shows and various PMD and Caddis nymphs (PMD Magic Fly, Split Case PMD, S& M PMD, Doc’s PMD, Tungsten UV Czech Caddis, Gold or Purple Weight Fly, Tung Dart,etc) You’re options are limitless right now!
Fish the slow depths for sure but start paying attention to the medium fast, swirly water as well. They are there and they are in feeding mode. No need to shorten up, you’re 9-10′ overall rig with which you’ve been plying the depths these last two weeks should work just fine.
The dry fly game is not really being played yet. The fish aren’t playing so we’re not playing but it shouldn’t be long, especially if the flows continue to hold or drop.
Not much talk out there about streamers as of late but don’t let that fool you. If you like the streamer game then play the streamer game. If you put your time in chances are you won’t be disappointed.
I had the pleasure of doing a full-on streamer float with Steve Fraley, a good friend from Michigan this past Saturday. Steve is Co-owner of Baldwin Bait and Tackle on the Pere Marquette River in Baldwin MI and it just so happens he played a major role in my becoming a streamer fishing addict by convincing me to do a destination streamer trip to Argentina way back in the day. I never looked back!
Steve made a surprise visit to Wolf Creek on Friday while en route to Seattle and on to Alaska where he guides during the summer months. We decided to do a short float on Saturday morning starting with nymphing and maybe switching over to streamers later in the day. The nymphing lasted for about an hour before we decided to go full-on streamers and we had several hours of solid action before things went quiet in the afternoon. I had downplayed streamer fishing on the MO’, especially with the bright sunny conditions but as is often the case, the fish were not deterred by the conditions. Just the opposite in fact. Maybe not LIGHTS OUT but a bunch of fish moved, a fair amount hooked and a few to the boat….a pretty good streamer day on any river and all in just a couple of hours of fishing.
The bottom line for late May/early June fishing on the MO’ is that things are good. If dry fly fishing is what you are seeking it’s not yet your time but conditions couldn’t be better for nymphing and streamer fishing. The crowds from two weeks ago have thinned a bit but the major influx is coming!
We hope to see you very soon at Wolf Creek Angler. We are your Missouri River fly fishing destination with EVERYTHING you need for your fly fishing odyssey. Affordable lodging, the best guides on the river and The up and coming Full Service Missouri River Fly Shop. Book your stay with us today or swing by on your way to the MO’ and see what the buzz is about. Open at 7 am daily for all of your Missouri River fly fishing needs.

So what’s it all mean? Those in the know are well aware of the snowpack and they have decided to reduce the outflow from Canyon Ferry in order to fill the reservoir. This tells me that the current contributing conditions are such that those calling the shots feel Missouri flows maintained in the 10K range below Holter Dam for time being will allow for sufficient fill rates. Above average precipitation over these next few weeks could definitely change this but if things remain average or below where precipitation is concerned we expect flows will be maintained at this level for the time being and will gradually be reduced as runoff peaks sometime in early to mid June.





So that’s the latest on river flows, now on to the fish numbers.
When discussing fish numbers it’s important to remember that even though we might be talking about declines or increases in the population we’re talking about them within the context of over 5,000 fish per mile in the section from Holter Dam to Craig. Amazing numbers to be sure. There was a substantial increase in Rainbow trout numbers which rebounded to 2014 levels after three straight years of decreasing populations. 2016 saw rainbow numbers of 4,816 fish per mile. Brown trout numbers continued to decrease for the fourth straight season with 269 fish per mile in 2016 which is still a respectable number.





