It’s the Seine. A proper river as my mother says. Yes, it has tides, it’s navigable, deep and polluted. At this spot it doesn’t look like a river at all. I visited a few places along the Seine looking for a place to walk but I only found a dead buzzard.
When I did find a place to walk there was no view of the river and it turned out to be infested with horsey types. I overheard one lady saying, “yes, we’ve walked more than six kilometres!”. I must just say the horse looked tired but she didn’t.