Lamar River, Wyoming
Lamar Valley, Yellowstone — Wild cutthroat in America's most famous wildlife corridor
The Lamar River flows through the Lamar Valley in the northeast corner of Yellowstone National Park — a wide, open sagebrush valley that is arguably the finest wildlife watching location in the lower 48 states. Wolves, bears, bison, elk, and pronghorn share the valley with wild Yellowstone Cutthroat Trout in a setting of extraordinary ecological integrity. Fishing the Lamar is an experience that transcends fly fishing — it is an encounter with wild America in its most complete form.
The Lamar's cutthroat are wild, native Yellowstone Cutthroat — the subspecies that co-evolved with this landscape over thousands of years and that has been restored to relative abundance through the park's intensive management following the lake trout invasion of Yellowstone Lake. These are cooperative, beautiful fish that average 12–16 inches and will eagerly take dry flies during the valley's consistent summer hatches. The Lamar is not technical fishing — it is honest, rewarding dry fly fishing in an irreplaceable natural setting.
The valley section — accessible from the Northeast Entrance Road that parallels the river for most of its length — provides easy access to miles of productive water. Early morning visits to the Lamar Valley reward not only with better fishing but with the highest probability of wildlife encounters: the Lamar Canyon wolf pack has denned in the valley for decades and is the most reliably viewed wolf population in North America.
The Lamar fishes best from mid-June (park opening) through September, with the Golden Stone and Caddis hatches of July and August providing the most consistent dry fly action. The valley's elevation (6,400–7,000 feet) keeps temperatures comfortable even in summer heat.
Lamar Valley — Northeast Entrance Road
The primary road through the park parallels the river. Multiple pull-offs along the valley floor. Easy wade access throughout the open valley section.
Confluence with Yellowstone River
The lower Lamar meets the Yellowstone River near Tower Junction. Good fishing at and near the confluence. Walk downstream from the Tower Falls area.
Soda Butte Creek — Upper Tributary
Major tributary entering from the northeast. Also excellent wild cutthroat fishing. The road to the Northeast Entrance parallels Soda Butte Creek.
Yellowstone Cutthroat
Native subspecies restored through park management. Averaging 12–16 inches. Cooperative dry fly feeders. Catch and release is critical for this recovering population — practice perfect fish handling.
Arrive in the Lamar Valley before sunrise for the best wildlife viewing — wolves are most active in early morning and evening.
Keep an eye on the ridgelines while fishing — bears and wolves frequently cross the valley floor and can appear with little warning.
Attractor patterns work exceptionally well on Lamar cutthroat — they have not seen the pressure that valley rivers outside the park experience.
The NPS fishing permit is available at all park visitor centers and entrance stations. Get it before walking to the river.
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