Montana ·
Missouri River Fly Fishing Report - June 14, 2026
MISSOURI RIVER
ReportJUN 14 — 21, 2026
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Flow
3130CFS
Missouri River bl Holter Dam nr Wolf Cr MT
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Water Temp
56.3°F
Updated 2026-06-13
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Weather
37–72°F
Mostly Clear
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Clarity
Clear
Check post-storm
The Missouri below Holter Dam is running 3,130 cfs at 56.3°F — textbook tailwater conditions with a slight green tint from the Dearborn tributary adding character. PMD and caddis hatches are firing hard mid-day through evening, setting up some of the best dry-fly fishing of the year.
What's Working — Hot Flies
Corn-fed Caddis (CDC) Tan #20
#20
Corn-fed Caddis (CDC) Olive #20
#20
Tungsten Split Case Nymph - PMD #20
#20
Guides Choice Hare's Ear #18
#18
Parachute - Blue Wing Olive #22
#22
Pheasant Tail Tungsten #20
#20
Roza's World Spain Perdigon Barbless #18 - 32
#18
Black Zebra Midge(TBH) #20
#20
Egan's CDC Rainbow Warrior #22
#22
Tungsten Jig Bugger - Olive - Barbless #14
#14
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Pale Morning Dun (PMD) | #18–20 | Heavy — pods of rising fish mid-river and along seams | 11 AM – 4 PM |
| Caddis (Tan/Olive) | #18–20 | Strong — skating and egg-laying flights in afternoon | 2 PM – 7 PM |
| Blue-Winged Olive (BWO) | #20–22 | Moderate — watch for overcast windows and riffles | 10 AM – 1 PM |
| Midge | #20–22 | Consistent — morning clusters and evening film feeders | 7 AM – 10 AM & 6 PM – dusk |
| PMD Nymph (subsurface) | #18–20 | Active — fish keying on emergers in the water column | 9 AM – 2 PM |
Best Time Window
- 9:00 AM – 11:00 AM: Midge and BWO nymph window — fish subsurface with Zebra Midge and Pheasant Tail before the PMD hatch kicks off
- 11:00 AM – 4:00 PM: Prime PMD dry-fly action — pods of rising fish on mid-river seams; Corn-fed Caddis and Split Case PMD nymph both producing
- 4:00 PM – 7:00 PM: Afternoon caddis flight — switch to Corn-fed Caddis (Olive or Tan) as egg-layers skate the surface; expect the most aggressive surface feeding of the day
Guide's Tip
From the benchWith flows at 3,130 cfs and water temps at 56°F, the Mo is in prime shape — position your boat or wade the inside seams where PMD nymphs concentrate before the hatch. Watch for the first rising fish around 11 AM as PMDs begin to emerge; switch to a Corn-fed Caddis or Parachute BWO as the hatch intensifies and fish start keying on the surface. The slight green tint from the Dearborn is actually helping — fish are a touch less spooky than usual, so don't be afraid to get closer to working pods. On this sunny, calm forecast, expect the best dry-fly window from 1–6 PM with fish feeding aggressively right through the evening caddis flight.
Main Species
Brown Trout
Rainbow Trout
Mountain Whitefish
