12pm(now) — Western Blue-Winged Olive
Peak activity at 11am — Western Blue-Winged Olive (Western Blue-Winged Olive, Peak emergence window)
Hatch predictions
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Based on species-occurrence records, not local invertebrate surveys.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
The Gallatin is a walk-and-wade freestone that pours out of Yellowstone NP and tumbles down through the canyon — pocket water you fish on foot, the way it ought to be. Rainbows and browns down low, cutthroat up in the headwaters. The salmonflies show in early summer, but only once the river has dropped and cleared off after runoff. Show up too early and you'll just stand in cold mud water and call it scouting.
Recreation: Bacteria/pathogen advisory — mind wading cuts and immersion.
EPA ATTAINS assessment unit 'Gallatin River' (MT41H001_021), 2021 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Algal Growth. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.
Status is for the Clean Water Act assessment unit covering this reach.
EPA ATTAINS (Clean Water Act) · MT41H001_021
The Gallatin is a walk-and-wade freestone that pours out of Yellowstone NP and tumbles down through the canyon — pocket water you fish on foot, the way it ought to be.
12pm(now) — Western Blue-Winged Olive
Peak activity at 11am — Western Blue-Winged Olive (Western Blue-Winged Olive, Peak emergence window)
Hatch predictions
See what else is on the menu with Pro.
Start free trial14-day free trial. Cancel anytime.
Based on species-occurrence records, not local invertebrate surveys.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
The Gallatin is a walk-and-wade freestone that pours out of Yellowstone NP and tumbles down through the canyon — pocket water you fish on foot, the way it ought to be. Rainbows and browns down low, cutthroat up in the headwaters. The salmonflies show in early summer, but only once the river has dropped and cleared off after runoff. Show up too early and you'll just stand in cold mud water and call it scouting.
Recreation: Bacteria/pathogen advisory — mind wading cuts and immersion.
EPA ATTAINS assessment unit 'Gallatin River' (MT41H001_021), 2021 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Algal Growth. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.
Status is for the Clean Water Act assessment unit covering this reach.
EPA ATTAINS (Clean Water Act) · MT41H001_021
Mayflies
Caddisflies
