Freestone · Mixed · Montana

Yellowstone River

Yellowstone River venue image
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Through Paradise Valley the Yellowstone is big, honest freestone water — browns, rainbows, and Yellowstone cutthroat all sharing the same long runs and bank seams.

Species

About as good as it gets

River high but settled. Fish are looking up — bigger flies, confident takes.

75% confidence in this read
Water temperature for brown trout
Ideal
10.6°Cideal 1016°C
0°14°28°
Why this score · for brown trout
  • Temperature10028% weight
  • Flow8022% weight
  • Clarity9518% weight
  • Feeding Time5013% weight
  • Pressure807% weight
  • Insect activity5812% weight
Conditions
Level
1.67 m
Water temp
10.6°C
Clarity
Clear
Air temp
23°C
Wind
W 13 km/h
Gentle breeze
Pressure
1011 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
0.7 mm
No meaningful rain · next 48h

Live readings only. Trends shown where the gauge supports them.

How to fish it · for brown trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
2
1
1
2
2
2
2
2
2
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Gallery · 1
  1. Terrain map of the venue
    Terrain map
Permits & access
Permit required — see local rules.
  • Montana licence
  • Frequently unfishable through June runoff
  • Handle native cutthroat gently and release.
Directions
About this water

Through Paradise Valley the Yellowstone is big, honest freestone water — browns, rainbows, and Yellowstone cutthroat all sharing the same long runs and bank seams. The Mother's Day caddis and the post-runoff salmonfly and golden stone hatches are the events people drive for. The catch is late spring, when a long, muddy runoff window owns the river and there's nothing to do but wait it out.

Under the surface

The Yellowstone is the longest undammed river left in the lower forty-eight, and it earns the title the hard way — from its source south of the park, through Yellowstone Lake, over the two great falls and down the Grand Canyon of the Yellowstone with its yellow rhyolite walls, then out across Paradise Valley beneath the Absarokas toward Livingston and the plains. The fishing river is the freestone below the park: a big, brawling, cottonwood-lined flood that rises hard and brown with the June snowmelt and drops into shape by July. The bed is rounded volcanic and granitic cobble, the lies in the riffle corners and along the cut banks. This is native cutthroat water at heart, sharing the run now with browns and rainbows. Wading is honest work on slick freestone, and the river runs higher and faster than your eye keeps telling you.

Wading: Fast, high water over slick freestone

  • Mixed
  • Unconfined
  • Pool riffle
  • Large river
Seasons & zones
  • TroutThird Saturday of May → Last day of February
Other water nearby · 5