It's a big state with lots of mountain rivers, that require some advanced whitewater skill.
IF you are moving to the front range, the South Platte once it is on the plains and parts of the Cache La Poudre are suitable for beginners. Central southern Colorado, parts of the Gunnison River above blue mesa, Close by in Utah -sections of the Green and Colorado -especially Ruby and Horsethief Canyons.
The Kayak Wing
EZ-Dock modular docks