One final C+O Canal post (unless I look at my photos again and come up with another idea!). Below is a view of Dam # 5, looking across to the WV side. The water was high, but not nearly at flood stage (click photos to enlarge):
Next is a shot I was practically mesmerized by, a 30' tree trunk that was caught in the hydraulic immediately below the dam:
This tree trunk--15' of which was stood up vertically out of the water in this shot--was tumbled incessantly, both end for end and rolled. It would disappear for 10-15 seconds, then pop back up, still caught in the hydraulic. There was no escape. Had this been a crazy kayaker, he/she undoubtedly would have also been trapped and drowned.
I love water, and although I am a decent swimmer, rushing water such as that above scares me. The weight and the force are irresistible.