On the River
On the River
2012 – On the River
- One Fly Event
2025 Event
Join us September 4-7 for the 39th annual conservation-focused angling event
Participant Information
Everything you need for an exceptional One Fly experience
Past Events
Celebrating decades of angling tradition and conservation impact
- Conservation
Conservation Impact
Decades of measurable conservation results protecting Greater Yellowstone waters
Successful Projects
Habitat restoration victories delivering lasting benefits for wild trout populations
Fund a Project
Make your mark: directly fund the next generation of habitat restoration
- Partners & Sponsors
Corporate Sponsors
Corporate partners investing in wild trout habitat and watershed protection
Conservation Partners
Collaborating with leading organizations to deliver science-based habitat restoration
Outfitters & Guides
The premier professionals who share our waters and conservation commitment
- About
Our History
39 years of conservation impact through the spirit of fly fishing
The Foundation’s Future
Securing wild trout habitat for generations through sustainable funding
Board & Staff
Dedicated leaders committed to trout habitat preservation
- Contact
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