Gallatin Canyon

Updated 35m ago

Gallatin · Yellowstone National Park boundary to Spanish Creek / Gallatin Gateway

Fishing Report

Report conditions: 314 cfs · 55.2°F · ▼ 3.4% 24h · ↓29% median

Flows are running about 29% below median and easing slightly, giving the canyon good clarity and wadeable pocket water. Water temp at Deer Creek is a cool 55°F, so no thermal stress concerns and fish should be active all day. Mornings are producing on Tricos and midges before the hoppers, ants, and spruce moths take over as the day warms—run a dry-dropper with a chubby up top and a rubberlegs or perdigon underneath through the faster runs. Nymphing still leads for numbers, but with clear water and stable conditions this is a great week to fish dries in the canyon.

Conditions	Clear, Improving
Nymphing	Pat's Rubberlegs #8-12, Perdigon #16-18, Pheasant Tail #16-18, Lightning Bug #14-18
Dry Fly	Chubby Chernobyl #10, Yellow Sally Stimulator #12-14, Elk Hair Caddis #14-16, Spruce Moth #14-16
Streamer	Galloup's Two Tone Dungeon #4-8, Boogieman #4, Rainbow Spanish Bullet

Based on current conditions and 2 local shop reports · 1h ago

What's Hatching Now

Seasonal Chart →

Tricos Tricorythodes minutus

Peak Favorable

Hook: #18-22

Hatch at sunrise; short emergence

Dries	CDC Trico #20-22 Hi-Vis Spinner #18-22 Trico Spinner #18-22
Nymphs	Pheasant Tail Nymph #14-20

Yellow Sallies Isoperla

Hook: #8-16

Nymphs more important than adults

Dries	Yellow Stimulator #10-14
Nymphs	Montana Jig Sally #14-16 Yellow Sally Nymph #12-16

Caddis Trichoptera

Hook: #12-16 Starts ~54°F

Mother's Day hatch pre-runoff; resumes ~Jun 20

Dries	CDC Caddis #14-18 Corn Fed Caddis #14-18 Elk Hair Caddis #14-18 X-Caddis #14-18
Nymphs	Hare's Ear Nymph #12-18

Midges Chironomidae

Favorable

Hook: #18-26

Year-round; peak winter during warmest hours

Dries	Griffith's Gnat #18-22
Nymphs	Mercury Midge #20-22 Spanish Bullet #16-18 Zebra Midge #18-22

Hoppers

Peak Favorable

Hook: #8-12

Dominant food source late summer

Dries	Chubby Chernobyl #6-12
Terrestrials	Dave's Hopper #8-12

Ants

Peak

Hook: #14-18

Terrestrials

Foam Ant #14-16

Beetles

Peak

Hook: #14-18

Terrestrials

Foam Beetle #14-16

Spruce Moths

Peak Favorable

Hook: #14-16

Near pine trees in canyon areas

Dries

Spruce Moth Dry #14-16

Conditions

Above Deer Creek (Big Sky)

1h ago

Clear

Flow	314 cfs · 4.97 ft · 54.5°F
Trend	↓29% med · ▼ 3.4% 24h
Wx	39° · 💨 18 NNE · 🌧️ 1% · H: 53° / L: 38°

Near Gallatin Gateway

35m ago

Clear

Flow	488 cfs · 1.62 ft
Trend	↓29% med · ▼ 1.2% 24h
Wx	54° · 💨 11 WNW · 🌧️ 1% · H: 67° / L: 52°

7-Day Flow

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