Mountain pocket water and colorful brook trout near Keystone Resort. A high-altitude freestone tucked into the Montezuma Valley.
The Snake River is a small, high-altitude freestone stream that flows from the Continental Divide near Montezuma through the Keystone area and into Dillon Reservoir in Summit County. A tributary of the Blue River, the Snake River offers a distinctly different fishing experience from its Gold Medal neighbor downstream. This is mountain brook trout fishing at its finest: tumbling pocket water, vivid fish, and a rugged alpine setting that makes every outing feel like an adventure.
The Snake River holds primarily brook trout (Salvelinus fontinalis) along with small brown trout in the lower sections. Fish average 6 to 9 inches, with occasional specimens reaching 11 or 12 inches in the deeper plunge pools. What brook trout lack in size, they make up for in beauty and willingness to eat. The vivid orange, red, and blue markings of a mountain brookie fresh from cold water are among the most striking sights in Colorado fly fishing.
The river has a complex history with mining impacts in the upper watershed near Montezuma and Peru Creek. Water quality has improved significantly through remediation efforts, and the fishery continues to recover. The lower Snake River near Keystone benefits from cleaner tributary inflows and offers the best fishing on the system.
The Snake River is accessed from US-6 near Keystone Resort, approximately 1 hour 30 minutes from Denver via I-70 east to US-6 at Dillon.
The Snake River is frozen and snow-covered in winter. At 9,000+ feet, temperatures are severe and access roads may be snowpacked. This is not a winter fishery. Fish the Blue River tailwater below Dillon Dam instead.
Snowmelt begins slowly at this elevation. The river remains partially ice-covered into April. By May, snowmelt runoff begins in earnest, making the river too high and murky to fish. Spring is not a productive season on the Snake River.
June brings peak runoff from snowmelt. By mid to late July, the river begins to clear and drop, opening the fishing season. August is the best month, with low, clear flows and active brook trout feeding on caddis, small stoneflies, and terrestrials. This is the time to fish the Snake River.
September is excellent. Low flows, cool water, and brook trout in their spawning colors make for beautiful fishing. By October, cold temperatures and early ice begin limiting access. The window is short but rewarding. November signals the end of the season at this elevation.
Live conditions for all 11 rivers across Summit, Eagle & Park Counties.
Gold Medal tailwater below Dillon Dam.
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Step-by-step instructions for Colorado's most versatile streamer pattern.
Get today's Snake River fishing score and conditions pushed to your phone every morning at 6 AM.