Water depth puts some restrictions on various actions:
* Over water table: (>=1), can plant, can meditate, can drop tent, can plan house* Water table: moist tile (+/- 0) no drink option available, no plant ("The ground is too moist here, so the bouquet of orange-red flowers would rot."), no meditate ("You can not meditate here. It is too wet."), cant drop tent ("The ground is too wet to pitch your tent there. You'll need to drop it on higher ground."), no plan house ("You can't build on water.")
* [[Water tile]]: below water level (<= -1) drink, refill options available
* Passable by shallow draft boats: Five below water level (<= -5) ([[Crude canoe]]s, [[Rowing boat]]s, [[Small sailing boat]]s, [[Knarr]]s)