Clear Creek and Bear Creek are both right outside of town. Can be minutes away, depending on where exactly you're at, for after work fun.
CC has two IV sections and one V section, and should run for 2-3 months after you get here (good timing, BTW!).
BC is "easy" low volume creeking--IV+/V-, but has a short window of doability. I'd expect it'll go with all the front range snow we've got, but it could be done by May. A good rain can bring it up.
When they're going, you'll have more potential partners than you can shake a stick at after work or on the weekends!