6/4/2026: Missouri River Fishing Report

Summary

Early summer has arrived ahead of schedule, with the river holding in the 3K club and acting more like a freestone in this low-water year. PMDs are in their historical main-event window right now, caddis are building, and the fish are eating heavily but getting educated daily. A soaking late-May rain added a touch of color.

At a glance: ~3,300 CFS below Holter | A touch of color from recent rain | 54 to 56°F, warming downstream | Hot stretch broken by soaking rain, more showers possible | PMDs at peak, BWOs waning, Pseudos, caddis building

Early summer has arrived ahead of schedule on the Mo. Flows are holding in the "3K club" at roughly 3,300 CFS below Holter, and this low-water year has the river acting more like a freestone than a tailwater, water temps (54 to 56°F) warm daily moving downstream from the dam and the fish are in their peak metabolic zone, eating heavily every day. The hot 80s-to-90 stretch in late May broke into a soaking rainstorm that put about 2" on the ground in 72 hours, adding a bit of color to the water and bumping trip bookings. Headhunters welcomes the rain, it shores up scant reservoir storage, and notes flows could bump temporarily before stabilizing again near 3K.

PMDs showed up roughly three weeks ahead of schedule and have been on the water since mid-May; the main event historically pops June 4 to 6, which is right now. BWOs are waning, micro mayflies (Pseudos) are appearing at varying times of day, and caddis are building with the warming trend. Fishing has been good but the fish are getting educated, the dry-fly bite that was easy a week ago is tightening up daily.

Best techniques

• Nymphing is the main game. Mornings: go deep, 6 to 7 feet under an indicator, with a worm pattern like the Wire Worm as lead fly trailed by a sow bug, target inside bends and slower water, especially in the upper river near the dam where sow bugs are always on the menu early. Afternoons: shorten to 3 to 5 feet and keep your mayfly nymph high in the column on the hard seams, swirlies, and fast shallow bank water; brown and olive patterns in #16 to #18.
• PMD techy nymphs are the timely swap, work Split Case PMDs, PMD Psycho Mays, and Micro Mays into your rig, and consider swapping the Pill Popper lead fly for a Blow Torch or Tung Dart as caddis build.
• Dry-fly fishing demands your A-game. Fish are very catchable but pressured, long leaders, accurate casts, and fly-first presentations. High-wing duns work the front end of the hatch; cripples, spinners, and emergers rule as it matures. Fish CDC and short hair-winged patterns in the film.
• Soft-hackle swing late morning to early afternoon: a Gold Tung Dart (caddis pupa) over a Partridge & Yellow (PMD) on a trout spey or single-hander finds swirling fish below the surface.
• Dry-dropper in skinny water: a Chubby suspending a Micro May or Frenchie is hard to beat, occasionally a big brown lights up the Chubby itself.
• Streamers when the sun is off the water, before the hatch or after the bugs have flown. Bright-sun fish are following but noncommittal; use a heavier sink tip to get down rather than expecting fish to chase up.

Hatches

Hatch picture: PMDs building toward the peak weeks (expect action to increase through the 4th of July); caddis improving with warm water, best below Mid-Canon for now; BWOs nearly done; Pseudos midday; Yellow Sallies starting (a small yellow stonefly, fish the parachute versions in the film); the worm hatch continues; ants (cinnamon, black, bi-colored) become daily carry by late June; Tricos on the horizon to finish the month. Midges remain the steady background option.

The Fly Box

Nymphs: Frenchy, Black IPT, Green Machine (incl. PT Green Machine), Psycho May, Split Case PMD, Spanish Bullet (brown or olive), Spanish Perdigon, Warrior Perdigon, PMD Perdigon, Fullback Napoleon, Two Bit Hooker, Micro May, Crust Nymph, Tung Jig Pheasant Tail, Tung Jig Hares Ear (GRHE), Blow Torch (incl. red bead), Redemptions, Magic Flies, Gold Lightning Bug, Weight Fly, Tailwater Sow (natural grey, rainbow, pink), Pill Popper, Wire Worm, Iron Sally, big and small PTs, Zebras, Split Back

Emergers: Loop Wing Emerger, Captive Dun, Partridge & Yellow, PMD Soft Hackle, Sprout Baetis (Baetis/PMD)

Dries: Purple Haze, Parachute Adams (Adams), Purple Para Wulff, Royal Wulff, Sparkle Flag, Split Flag, Brianne Dun, Film Critic (BWO/PMD), Missing Link (caddis/PMD), CDC Para Spinner, Hi-Vis Rusty Spinner, Corn Fed Caddis, Buzzball (great for both caddis and PMD)

Streamers: Bam Bam, Thin Mint (Thin Mint Bugger), Trout Spey Bugger, Mini Montana Intruder, Mini Sculpin, Mini Dungeon, Micro Dungeons, Micro Peanut Envy, Peacock and Black Bugger, Sex Dungeon (try a big white one if your heart can handle it), Kreelex, Sparkly Minnow, Lil Kim, Skiddish Smolt, Gamechanger, Zirdle, Space Invaders

Outlook. Rain in the forecast all week, good news for reservoir storage and summer flows, with a temporary flow bump possible before stabilizing near 3K. The cooler, wetter pattern should spur caddis activity and keep water temps in the happy zone. The PMD main event is arriving on its historical June 4 to 6 schedule (three weeks after first emergence), the next two weeks are Headhunters' favorite fly-fishing window of the year on the Mo, with PMD action expected to build through the 4th of July. On this lower-water year, expect the hatch to run hot and finish earlier than usual, make hay now. Thunderstorm chances most days; pack raingear and sunscreen both.

Sources and Thanks

Shop	Report date	Coverage
Headhunters Fly Shop (Craig)	June 1, 2026	Missouri River
The Trout Shop (Craig)	May 28, 2026	Missouri River
Cross Currents Fly Shop (Craig)	May 26, 2026	Missouri River
Wolf Creek Angler (Wolf Creek)	May 14, 2026	Missouri River