Willow Creek is a small tailwater stream located below Harrison Reservoir and is an easy day trip from both Bozeman and Ennis. The stream is located at the bottom of a beautiful canyon and can only be accessed after a 4x4 drive across a private ranch and a short hike. Getting to the creek is a real adventure! Once at the bottom of the canyon, anglers have access to miles of productive pools and runs. Rainbows and Browns are both present in good numbers and most trout fall into the 10-15" class, although some bigger browns are present as well.
The creek occasionally blows out during high water years but Harrison Lake typically acts as a buffer for dirty water. The nymph fishing is very productive on Willow Creek throughout the season. The dry fly fishing can be very good at times but is a bit inconsistent from day to day. Caddis and Pale Morning Duns are the primary hatches.