Box Canyon is often combined with a high-water trip down the upper McCloud. Stop to scout whenever you cannot see to the bottom of a rapid, because strainers and logjams can pose substantial risks. 0 Put in on the left side below Siskyou Dam road bridge, probably lowering your boats on a rope. Almost continuous class IV rapids begin immediately. Stop to scout as necessary.
Several trails descend from a parking lot to the river near the base of a midstream island.
Vehicles can reach Ney Springs by driving south from the west side of Siskyou Dam, then taking a dirt road down to the river. 2 Stink Creek enters on the right. 2.4 First railroad bridge, where Cantara Loop descends to and crosses the river. This was the site of a toxic waste spill in 1991. 3.1 Second railroad bridge, then big Canyon Creek enters on the left.