The Firehole River - This is one of the truly unique fly fishing rivers in the world. It flows through several large and active thermal basins and you may have to walk around "mud pots" and hot springs as you walk the banks.There is usually a lot of wildlife in this area. there are plentiful numbers of rainbows and browns but most are in the 12-14 inch range but fish up to 18" have been caught. It is an early and late season river due to the thermal activity. It fishes well from the opener on Memorial Day weekend into June. It does not really become fishable again until September when the cold

​

Links to more information on the Firehole River:

The Firehole River - Yellowstone Fly Fishing

Map of the Firehole River - yellowstoneflyfishing.com

Fly Fishing the Firehole River - Perfect Fly

​