The Yampa River near Steamboat Springs, Colorado, has closed to fishing due to high water temperatures, per Steamboat Pilot & Today. Commercial users – fly fishing guides – are prohibited from spending time on the river; however, the closure for everyone else is voluntary. Unlike other rivers in the Rocky Mountain West, officials at Colorado Parks and Wildlife didn’t feel the need to initiate a mandatory closure.
You can read more about the current state of the Yampa River here.