The Canal Saint-Martin is north of the Seine, towards the east side of Paris. As part of periodic maintenance, the canal was completely drained, leaving behind years of detritus and debris. Follow the link to see a series of pictures showing the process of draining the canal and some of the junk that people somehow decided to dispose of into the water.

No big surprises, but I did find the whole series fascinating. They were so careful to save all the fish.