Well, for starters, pick up a copy of Whitewater of the Southern Rockies. It will be the best 50 dollars you ever spend.
Whitewater of The Southern Rockies guidebook
You've got the Animas:
The Upper A-IV
There are some scenic floats ranging from II-III around the Forks of the Animas by Silverton
You've got the Dolores:
Cahone/Bradfield/Slickrock/Gateway is not too far
Stoner Stampede is a phenomenal play run when it's in
San Miguel: Ledges, etc.
That's just a start though. There's more good whitewater within 2 hours than you can imagine. Enjoy.