Water depth puts some restrictions on various actions:
* Water level: (+/- 0) no drink option available, no plant [[Sprout]] (too moist message)
* Drinkable[[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)
* [[Digging]]: Up to seven dirts below water level (>= -7)