Wild River Press is pleased to present this practical collection of 100 top fly patterns effective for trout in and on the wonderful waters of Colorado. They are listed by broad category according to type (dry fly, nymph, etc.) and in alphabetical order within each category. This is not intended as an all-inclusive or exclusive list but, rather, a solid foundation from which you can pick and choose your favorites. Wherever and whenever you fish, you’ll find many useful additions to your fly box. These flies all work; at times and under the right conditions, they are deadly. For recommendations of both proven traditional and innovative new patterns, thank you to experienced fly designers and avid anglers Rob Kolanda of Front Range Anglers, Al Ritt, Ray Chang of Solitude Fly Company, Rocky Bloskas of Stone Creek, and Bruce Olson of Umpqua Feather Merchants—no angler should go fishless with this premium selection. Good fishing!