Firehole River
WY
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River
About Firehole River
The Firehole River is a dynamic 30-mile hybrid freestone and spring creek within Yellowstone National Park, renowned for its wild brook, brown, and rainbow trout populations. This geyser-heated system offers a diverse fly fishing experience with fast pocket water, riffles, and challenging slick water sections. Anglers can anticipate excellent dry fly opportunities during Caddis and Golden Stone hatches, with warm spring waters influencing water temperatures for early and late season fishing. Accessible via the Grand Loop Road, with some areas requiring a short hike, the Firehole also boasts tributaries like Sentinel Creek and the Little Firehole River that can hold larger trout seeking cooler waters.
Access
Seasons
Terrain
Water
Fish Species
Rainbow Trout
Brown Trout
Brook Trout
Cutthroat
Regulations
Fishing Styles
Methods
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Wade Friendly
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Float Friendly
Land Ownership
National Park
Regulations
Trip Planning
Best fishing typically occurs during spring and fall. Check water conditions before heading out.
See what insects are emerging on Firehole River's hatch forecast — including active hatches, water temperatures, and which patterns to have in your box this month.