Apr 03, 2025

Yellowstone National Park.

New for the 2024 season, the Madison and Gardner River in YNP will remain open to year-round fishing for as long as weather permits. The Madison will remain open from the park boundary to the MT/WY state line, and the Gardiner will remain open from the park boundary up to Osprey falls.

All other YNP fisheries are CLOSED as of October 31st. Standard fishing season in the park is Memorial Day (May 26th) -October 31st.

Floy Tags

Park biologists are conducting a study to determine fish movement patterns and population sizes in Yellowstone Lake and several other park waters. Biologists have attached a Floy tag near the fish’s dorsal fin. The tags are typically orange or yellow in color and have a unique identification number.

If you catch a tagged cutthroat:

1. Record the tag number (photo or written) and release the fish unharmed.
2. Note the location the fish was caught.
3. Call or text 406-404-4877 and report the tag number and location of catch.
4. If the fish accidentally died, please include that detail in your report.