Intro: Montana Stillwater Fly Fishing in July
When July hits in southwest Montana, it’s time to load up the float tube and head to Georgetown Lake. Known for its healthy population of rainbow and brook trout, this scenic stillwater becomes a top destination thanks to two iconic hatches: the midday damsel fly emergence and the evening traveling sedge explosion.
This month, we’re diving into fly recommendations, stillwater tactics, and the best sun protection gear for those long days on the water. Whether you’re a seasoned lake angler or new to the stillwater game, Georgetown in July is a can’t-miss experience.
Hatch Focus: Damsel Fly and Traveling Sedge
Midday: Damsel Fly Hatch
By late morning and into the afternoon, damsel flies are the main event. Trout cruise just under the surface, ambushing emerging nymphs and newly hatched adults. Sight-fishing opportunities abound, especially along weed beds and shallow flats.
Must-Have Damsel Nymphs:
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Lancer’s Damsel Nymph – a killer imitation with just the right movement
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Belly Flop Balanced Damsel – ideal under an indicator or euro rigged in deeper channels
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Ritt’s Slimfast Damsel – sleek profile, deadly on the strip
Top Damsel Dry Patterns:
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Deer Hair Damsel – floats low and fools picky cruisers
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Braided Butt Damsel – great for that moment right as the adult breaks the surface
Evening: Traveling Sedge (Giant Caddis)
As the sun drops and the wind settles, big caddis start skipping across the surface in a wild mating ritual. This is when trout lose all caution, crushing dries with reckless abandon.
Evening Sedge Favorites:
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Chubby Chernobyl – floats forever, easy to skate or skitter
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Hopper Stones – buggy, versatile, and deadly in low light
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Goddard Caddis – a traditional favorite that rides high and skates beautifully
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Plan B – perfect when they’re refusing everything else
Tip of the Month: Stillwater Tactics for Success
1. Target the Drop-Offs
Early and late, trout move into shallow water to hunt damsels. Cruise the edges of weed beds and shoals in a float tube, pontoon, or boat. Use a slow retrieve and keep your eyes peeled for cruisers.
2. Retrieve Like a Real Damsel
Use an intermediate or hover line and a slow, steady hand-twist retrieve with long pauses. You’re imitating a swimming insect—don’t rush it.
3. Use Balanced Flies Under an Indicator
When fish are holding deeper during midday sun, the Belly Flop Balanced Damsel under a small indicator can be a game-changer. Fish it 3–6 feet deep near weed edges or structure.
4. Skitter the Sedge
During the evening hatch, give your dry fly life. A long leader, floating line, and subtle rod tip twitches will help skate your fly like a real caddis trying to escape.
5. Watch the Wind
Bug drift and trout location shift with the wind. Fish often stack up on the downwind side where hatches collect.
Product Spotlight: Sun Protection You’ll Actually Want to Wear
Stillwater fishing means long hours under direct sun. Our favorite gear for July protects you without making you sweat. This isn’t your dad’s old-school fishing shirt—this is technical gear built for anglers.
Simms SolarFlex Hoody
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UPF 50
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Quick-dry comfort
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Thumb loops and hood for full coverage
💬 "I wear it all summer. Light and breathable, even when I’m rowing." – Shop Staff
Grundéns Solstrale Sunwear + Sun Gloves
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Full UPF coverage and stretch fit
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Built for performance without bulk
Bajío Sunglasses
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Polarized lenses designed for anglers
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Exceptional clarity and contrast, especially on stillwater
Sun Bum & Sawyer SPF
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Fly line-safe and reef-safe
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Easy to apply, non-greasy protection
👉 Shop all sun protection gear at TheStonefly.com
Final Word
If you're looking to experience explosive dry fly eats, sight-fishing opportunities, and cool mountain air, Georgetown Lake in July delivers. Come by the shop for the flies we trust, gear that works, and the best sun protection to keep you on the water longer.
Stop in, call, or shop online at TheStonefly.com. We’re always happy to talk stillwater strategy.
