Actually, you just go to the parking area (East of 41). Walk down until you you see old Corlieu's grave (look for the cross).
Corlieu was the caretaker for that segment of the flume.
If you go a little downstream, there is lots of lumber from the flume to the west (right) of the trail.
The hot springs are just slightly above the falls. You should be able to spot the man-made stone wall.
My memory is a little rusty as to the exact date, but there was a time when blokes from the lumbering areas would ride the flume down on a log to get to Clovis for a party...