Lamar River
WY
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River
About Lamar River
The Lamar River, a 43-mile freestone stream in Yellowstone National Park, is renowned for its native Yellowstone Cutthroat Trout and occasional Rainbow Trout. A highly productive 7-mile stretch through the Lamar Valley, accessible from the Northeast Entrance Highway, offers excellent opportunities for dry fly fishing, especially during clear water periods. Anglers can anticipate hatches of Drakes, and terrestrial fishing for hoppers, ants, and beetles is a major draw. While the river's headwaters in the Absaroka Mountains present steeper, canyon country with smaller trout, the river flattens as it approaches Soda Butte Creek, with fish size increasing to a common 9-14 inches. This lower section, particularly in late July and August, provides less pressured, receptive trout that are susceptible to attractor patterns and hoppers.
Access
Seasons
Terrain
Water
Fish Species
Cutthroat
Rainbow Trout
Fishing Styles
undefined USGS Water Conditions
Water conditions for the last 7 days. You can gain insights to fishing activity based on these conditions, like water temperature and flow.
Data sourced from the USGS National Water Information System
Methods
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Wade Only
Land Ownership
National Park
Trip Planning
Best fishing typically occurs during summer and fall. Check water conditions before heading out.
See what insects are emerging on Lamar River's hatch forecast — including active hatches, water temperatures, and which patterns to have in your box this month.