this might be a dumb question, is Paris concerned with the meandering of the Seine river? the river and gravity want to cutoff those curves and create an oxbow lake or two. are there underground aquifer tunnels to divert river flow to lessen the strain?
https://www.google.com/maps/place/Pa...14!4d2.3522219
or
https://www.google.com/maps/place/Pa...14!4d2.3522219