Williams Fork Reservoir is located three miles south of Parshall Colorado off U.S. Hwy 40. The Reservoir  has 1,860 surface acres and 15.8 miles of shoreline.

The reservoir is fed by two major tributaries, the Colorado River system and the Williams Fork River. Nestled in a diverse Rocky Mountain setting, this reservoir has proven to be an outstanding coldwater fishery due to the natural forage base and its prime habitat. Various species of trout i.e. Rainbows, Browns, Cutthroat and Mackinaw can all be found prowling these waters. The Kokanee salmon are abundant and anglers in late autumn can usually fill a bag limit. Williams Fork is also an excellent Northern pike fishery. The lake holds a reputation for the state record in Northern pike measuring at 43.5 inches, and weighing in at 30.6 lbs. 

Many different species of fish can be harvested at Williams Fork Reservoir because it provides a diverse underwater habitat allowing each species to prosper in it’s own choice of environment, therefore resulting in the growth of many healthy fish. Ice fishing is popular and provides anglers an opportunity during the winter months.