Elkhead Reservoir State Park is a Colorado state park located in Moffat and Routt counties in northwest Colorado, near Craig. The park surrounds and includes the 900 surface acre Elkhead Reservoir. It is referred to as Elkhead State Park. Elkhead Reservoir State Park is managed as a complex out of the Yampa River State Park office, located to the west of the town of Hayden, CO. (Ref: https://en.wikipedia.org/wiki/Elkhead_Reservoir_State_Park)