Not enough water to run the power plant, so the canal is empty.
Random wood in odd spots at low water.
I suggest that you Scout since the summer shifted a lot of lumber around.
First image is the start of the big drop in Stairway. There are also a couple of small things just below the surface on the approach. Look before you go.
(images are full res since I posted this with my phone. Click on them to enlarge and see things).