Originally Posted by streetdoctor
chatfield is free if you have a state park pass
Chatfield does not charge a boat ramp fee, but it does charge $8 for a day pass just to get in the park. An annual state parks pass costs $70.
Also, Chatfield is quite a drive from Boulder. Closer to Boulder is Bear Creek Lake Park, run by the City of Lakewood. You can paddle in either Bear Creek Lake or Big Soda Lake--the latter is obvious from C470 near the US285 exit. Their day use fee is only $5, and the annual pass is about $40.
Gross Reservoir is "no body contact allowed". That includes rolling, although if nobody's around to see you and you have a secure roll...