Lake

Lake is a water biome in RimWorld.

Summary[edit]

A lake acts as a background biome on the surface of the world. You cannot settle, nor enter a Lake tile.

It is mechanically the same as the ocean biome, with a few exceptions:

Entering a tile next to a lake/ocean tile will make the water body on the coastline be freshwater or saltwater, respectively.
A water tile will be a lake if it's part of a water body with a size of 15 tiles or smaller, otherwise it will be ocean.

A lake tile, as well as ocean and sea ice, has a pollution factor of 8 - dumping toxic wastepacks onto these tiles will pollute them eight times more than a normal land tile.