Gallatin River

September 20, 2020

Fishing Conditions

September 20, 2020

The Gallatin is fishing well and is a great option currently. The Gallatin in early fall allows an angler to fish their preffered method, whether that be dries, nymphs or streamers. And on any given day you might have to use each tactic. Hoppers and other terrestrials are tapering off, but dry dropper rigs are still picking up fish here and there. Most anglers are digging out their bobbers, as the nymph bite has been very consistent. A darker colored stonefly with a pheasant tail dropper is hard to beat right now. Other popular choices include caddis pupa, soft hackles, mayfly attractors, worms and midges.  Streamer fishing has picked up nicely, and should just continue to get better. Stick to smaller streamers in olive, white and black. A sink tip or an extra split shot or two can certainly help as well. You may see quite an abundance of Green Algae right below Big Sky, if you do find yourself in this area, above Big Sky, or lower in the Canyon may be a better option for fishing. 

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Fly Pattern Suggestions

Dries: Griffiths Gnat: 16-20, Purple Haze: 12-18, Matts midge: 18, Adams Para Wulff: 14-18, Brook Sprout BWO; 20-22, C-UM Spinner PMD; 16-20, Water Walkers; 10-16, Triple Decker Hoppers; 12-16, CFO Ant; 12-16, Hi-Vis PMD; 14-16, Twisted Sprucie; 12-14

Nymphs: Delektable Hurless: 4-6, Mega Prince: 4-6, Mega Hare's Ear: 6-8, Pats Rubber Legs Tan: 6-10, Pheasant Tail: 14-18, Copper John Blue, Black: 14-18, Lightning Bug Silver, Original, Gold: 12-14-16, El Diablo: 14-16-18, Tungsten Purple Burger: 12-14, Wire Worm Pink: 4, Military Mayfly: 18-20-22, Little Green Machine: 18-20-22, Little Spanker: 12-18, Hares ear: 12-18, Zebra Midge: 18-22

Streamers: BH Black Bugger: 2-4-6, Black Krystal Bugger: 6-8, Sex Dungeon Black, Olive,: 2, Home Invader Black, Yellow: 2, Black/Copper Zonker: 4-6, Sculpzilla Black, Olive, White: 2, Micro Zonker Grey, Brown, Black: 8, Bellyache Minnow Tan: 1-1/0, JJ Special: 6-8, Yellow/Brown: 4, Cheech Leech, Halloween: 1

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More USGS Water Data

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