watermills

[ShyLion]

If there is two tiles, separated by the river, you can build a watermill on one tile only.

 

[BeefontheBone]

Methinks that's a feature rather than a bug.

 

[eldar]

Yep you can only build a watermill on one side of a river, not both. Farm the other side, or put a +1 gold cottage instead.