Gallatin Valley

Updated 1h ago

Gallatin · Spanish Creek / Gallatin Gateway to Three Forks (confluence with Madison and Jefferson)

🌡️ Water hit 77.5°F in the last 3 days — hoot owl territory

FWP restricts fishing from 2pm to midnight when water hits 73°F for three consecutive days. An official restriction may follow — check FWP before an afternoon session. Fish mornings, land fish fast, and keep them wet.

Fishing Report

Report conditions: 387 cfs · 61.9°F · ▼ 2.3% 24h · ↑2% median

The Gallatin at Logan is running close to seasonal median (387 cfs, just 2% above) and clear, with water temps in the low 60s—good news for midday fishing. Dry-dropper rigs are producing well: fish a chubby chernobyl trailing a pat's rubberlegs or pheasant tail through pocket water and deeper runs. Look for yellow sallies, caddis, and morning tricos to bring fish up, with hoppers, ants, and beetles becoming increasingly important as we push into August. No restrictions in place currently, and conditions look stable to slightly improving if afternoon storms stay light.

Conditions	Clear, Improving
Nymphing	Pheasant Tail #16, Pat's Rubberlegs #10, Flashy Perdigon #16, Yellow Sally Nymph #14
Dry Fly	Royal Chubby Chernobyl #10, Yellow Sally Stimulator #14, X-Caddis #14, Trico #20
Streamer	Woolly Bugger #8, Rainbow Spanish Bullet

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

What's Hatching Now

Seasonal Chart →

Tricos Tricorythodes minutus

Peak Slower

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

Resumes post-runoff ~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

Slower

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 Slower

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

Conditions

At Logan

1h ago

Overcast

Flow	392 cfs · 4.55 ft · 59.9°F
Trend	↑4% med · ▼ 3.4% 24h
Wx	56° · 💨 13 N · 🌧️ 1% · H: 70° / L: 54°

7-Day Flow

Section Map

Gauge Access Site Fly Shop Full Map →