CPW is responsible for the preservation and protection of native and non-native wild trout populations. Most mountain streams and some high lakes in Colorado support populations of wild trout. These resources are important to the integrity of Colorado’s trout fisheries; as an indicator of properly functioning aquatic ecosystems; and for their intrinsic value to those seeking a unique, aesthetic and significant fishery resource. to assure the continuation and availability of wild self-sustaining trout populations the Parks and Wildlife Commission has established specific management guidelines for those aquatic habitats which support all life stages of trout. These waters are to be managed to the extent possible to maintain these wild trout populations. Buy License Online Fishing License Information License Agent List Back to our listing of states