Can somebody explain to me how you can get through a canal lock without closing one set of paddles before exit (the upper set if locking down, the lower set if locking up).
Enter Lock, close gates behind you but you forget paddles and leave them open.
Now go to gates in front of you, open the paddles and you now have a free-flow of water from highest to lowest, 'easy' mistake to make.
it has been done before in other places but not often.....you would have to be on your own, so no one to notice and stop you. and, as they said, in a hurry.....but I bet whoever did it won't do it again.
Giving it some more thought, you could fail to close one paddle in the entry gates completely if "in a hurry" but the flow from the exit gate paddles would be sufficiently larger to change the levels. I guess that's what happened.