Outdoors and wildfire - Mountains
Fishing rules on the Roaring Fork change as you move down the river
The Roaring Fork River carries Gold Medal water and special catch rules that shift by river segment, so the legal way to fish depends on exactly where you stand.
Published June 10, 2026 - Last verified June 11, 2026
The Roaring Fork is the river that runs through Aspen and down the valley. It is a well-known trout stream, but a key thing to understand is that the rules are not the same along its whole length.
Parts of the Roaring Fork are designated Gold Medal water, a state label for streams that produce strong numbers of large trout. Along with that reputation come special regulations. On some upper stretches the river is artificial flies only, and every trout must go back in the water. Other stretches downstream allow flies and lures, with a small bag limit and a minimum size for the fish you keep. The exact lines where one rule ends and another begins are tied to landmarks like bridges and creek mouths.
Because the rules shift by segment, “I have a Colorado fishing license” is not the whole story. You also need to know which stretch you are standing in and what method and limits apply there. Getting it wrong can mean a ticket even with a valid license.
Before you fish, check the current Roaring Fork River regulations and the Gold Medal designation on the Colorado Parks and Wildlife website, since segment boundaries and limits can be updated.