* All water in caves is automatically fresh
* Single tile over 25 deep = water, probably won’t get fish in it
Water tile category seems to be determined at server restart. Therefore a fresh water lake can became salty (so a sea) after connected to salty water trough a deepth enough canal and after server restart. On the opposite a inland sea can be re-turn back into fresh water lake after server restart, if the connecting channel is fullfilled over -25 dirt level (-20 remains still deep enough for biggest boats).
== Usage ==