Anything specific you are looking for on the trip or just knowing what's out there?
Good list by shap.
Don't know Cali very well but believe there are lots of options there as well. How many days make it worth your while? That might help guide the responses and help with the non-permitted sections. For those owyhee comes to kind, sections of CO, salmon, green, and I'm sure lots I'm forgetting. Also guessing your rafting based on your user name but you never know and that will help narrow it down also.
I thought the odds suck on all permitted sections but would love to hear if some are better odds.