Hatch predictions
Today's headline hatch shown — see all 8 active hatches hour by hour as a supporter.
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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 Clark Fork is a river with a hard past — the upper reaches carried a century of mining poison out of Butte, and what you fish today is the product of an enormous cleanup. Below Missoula it's grown back into a big, broad freestone full of browns and rainbows that eat trico and baetis and a fine fall caddis. It's a float river in its lower reaches and a wade river up high. Like most things around here it goes brown in June runoff and then settles into a long, generous summer and fall.
Recreation: Bacteria/pathogen advisory — mind wading cuts and immersion.
EPA ATTAINS assessment unit 'Clark Fork River' (MT76E001_010), 2021 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Nutrients, Algal Growth, Habitat Alterations, Metals Other Than Mercury, Mercury. 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) · MT76E001_010
The Clark Fork is a river with a hard past — the upper reaches carried a century of mining poison out of Butte, and what you fish today is the product of an enormous cleanup.
Hatch predictions
Today's headline hatch shown — see all 8 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Supporters see what else is on the menu.
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 Clark Fork is a river with a hard past — the upper reaches carried a century of mining poison out of Butte, and what you fish today is the product of an enormous cleanup. Below Missoula it's grown back into a big, broad freestone full of browns and rainbows that eat trico and baetis and a fine fall caddis. It's a float river in its lower reaches and a wade river up high. Like most things around here it goes brown in June runoff and then settles into a long, generous summer and fall.
Recreation: Bacteria/pathogen advisory — mind wading cuts and immersion.
EPA ATTAINS assessment unit 'Clark Fork River' (MT76E001_010), 2021 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Nutrients, Algal Growth, Habitat Alterations, Metals Other Than Mercury, Mercury. 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) · MT76E001_010
Mayflies
Chironomids
Gammarids
