Tuolumne can be rafted in 1 day, or on a 2-day camping trip, where you go at a more leisurely pace and have time to hike. I decided to go the 17 miles in one day. We were told that this was a special time to visit the Tuolumne. Remember the Rim Fire last year that burnt 250,000 acres? Well, this is the first spring after that fire and you can see wild flowers growing in the now-open areas.
Here's a video of the class V rapids, Clavey Falls. It looks much tamer on the video, though! And everything always LOOKS alright as long as no one falls ...
We did have a swimmer on the class IV Ram's Head but alas, my GoPro wasn't on at that time!
Other highlights include the class IV Gray's Grindstone which is a mile long rocky rapids. If you're considering rafting in Northern California, I would highly recommend Tuolumne!