According to Yellowstone Angler’s August 17, 2026 report, recent storms in Yellowstone National Park are pushing muddy runoff downstream, meaning “down low would be the best plan for a float today” as clearer morning water gives way to brown conditions from Gardiner through town. Carter’s is reading 2,470 CFS with temperatures between 59.5°F and 64.4°F, though anglers should still monitor temps and “consider calling it a day” if the river hits 68°F to 70°F.
- River Conditions: Flows sit at 2,470 CFS with water temps ranging from 59.5°F to 64.4°F.
- Water Clarity: Upstream rain is bringing mud downstream, making lower stretches the most viable float option.
- Regulations: Cooling trends have prompted the lifting of hoot-owl restrictions between Highway 89 and Laurel.
Overall action has been “a little on the slow side this week,” but dropping temperatures should “help extend the fish bite into the afternoon” for anglers targeting quality trout. Terrestrials are picking up momentum, with the report emphasizing that “the tricky part is paying close attention to your fly after a long silence.”
- Surface Patterns: Chubbies, nocturnal stones, ants, and smaller terrestrial patterns, as “smaller hoppers seem to have the edge (#12-14).”
- Nymphs: Buggerlegs, Perdigons (#14–18), Beadhead Princes, and Blow Torches.
- Streamers: High-visibility patterns including Sparkle Minnows, Sex Dungeons, and Olive Leadeye Stingers.
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