Yampa River State Park

From Yampa River website:
The Headquarters on the Yampa River near Hayden, Colorado, provides excellent camping, a Visitor Center and nature trail. The Headquarters has 50 camp sites; 35 are RV electric sites, 10 tent sites and five sites for group camping.  A 134 - mile stretch of the Yampa River is the heart of Yampa River State Park. It has 13 access points stretching from Hayden to the Dinosaur National Monument near the Utah border. The river access sites offer recreationists six camping areas, excellent fishing on miles of flat-water and Class I-V river boating.