there is a long dead-end side canal from the canal lateral de la Loir, which heads North to the city of Nevers  itself. There used to be a lock at the river proper- the North end of the side  canal- but the river is no longer navigable at that spot, so the lock is no longer visible- it is now a swimming complex (itself abandoned). We are in the area at the North end. It's called "Quai de la Jonction".

Capitalism searches out the darkest corners of human potential, and mainlines them.

Look a little way right from the bridge with the weir.