In any case, we often do not see another person until the last two miles. We have seen Bald eagles, otters, deer swimming the river, osprey, quail, elk, herons, and wild turkey. There are some pretty good play spots as well. There are spots to surf, ender, cartwheel, and splat. There are several ugly strainers that can be avoided.
Shuttle takes an hour or so round-trip.
Here is the link to Bill Tuthill's California Creekin Website description of the Rumsey Run . This includes the section below this run. The north fork merges with the main branch of Cache Creek that comes out of Clear Lake after 2 miles. This is usually the toughest rapid on the run. It is almost within sight of the take out in a sharp left-hand bend.