Rezca
The Greatest Jaggi
It seems to me that now watermills are significantly worse than the jungle camp / lumbermill on a riverside tile. Jungle camps in particular, with Naturopathy, give 3 food, 2 hammers and 1 commerce on flat grassland. This is better than any other non-resource tile for at least a couple of eras.
Isn't that only while you're running Tribal(ism) though?
Which also cuts the income of your cities, amongst other things.