Approximate - nearest available gauge. Use as general reference only.
Rock Creek enters from the right just as the river curves to the left. It is obvious, as there is a huge scree slope on either side of the creek. This scree is rock removed from construction of the tunnel between Mammoth Pool and Mammoth powerhouse.
There is road access a short but steep distance up this creek. No doubt there are fishermen's trails from the road to the river. This could be alternate put in during the winter when access to Mammoth Pool is blocked by snow.
Below Rock Creek the class 4 rapids are very continuous for a mile and a half or so.