Moisture pump

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Moisture pump

Moisture pump

Very slowly equalizes moisture in nearby terrain, converting marshes or shallow water into dry ground, and soft sand into normal sand. Does not affect deep water.

Base Stats

Market Value
275 Silver [Note]
Path Cost


1 × 1
pass through only
Cover Effectiveness
Terrain Affordance
-150 W


Required Research
Moisture pump
Skill Required
Construction 6
Work To Make
1,500 ticks (25 secs)
Resources to make
Steel 75 + Component 4
Deconstruct yield
Steel 37 - 38 + Component 2
Destroy yield
Steel 18 - 19 + Component 1

A moisture pump slowly removes moisture from nearby terrain, providing buildable and sometimes arable land.


Moisture pumps can be constructed once the Moisture pump research project has been completed. They require Steel 75 Steel, Component 4 Components, 1,500 ticks (25 secs) of work, and a Construction skill of 6.


A powered moisture pump will slowly remove shallow water and other marshy tiles up to a radius of 6.9 tiles. The pump's radius will expand roughly 1 tile every 8.7 days — the entire radius will be terraformed in 1 year (60 days). The pump instantly transforms the tile that it is installed on once it becomes powered.

All other terrain types are unaffected by moisture pumps. Importantly, moisture pumps do not terraform moving water and deep water.

Pumps can be built on bridges, and will convert tiles under a bridge. However, the bridge must be removed before heavier objects can be placed on the land.

Once the tiles are converted, the change is permanent, and the pump is redundant. Moisture pumps cannot be manually turned off and must either have their power source disconnected or be deconstructed to stop them drawing power. Even after reaching their maximum radius, pumps will still draw power.

Inner circle is the radius of water already removed.
Outer circle is maximum radius of the pump.


Moisture pumps are the only way to permanently terraform wet environments. Because they are very slow, planning ahead or building in other areas is required while you wait up to a full year in advance. Moisture pumps may also have to be placed in a location that will need to be defended.

Wealthy Terraforming[edit]

Because moisture pumps instantly terraform the tile they are installed on, a colony can terraform an area quickly by building a large number of moisture pumps, one on each tile. You can alternatively build moisture pumps much closer together (such as 2 tiles apart) and only need to wait for them to expand their radius a few times. This strategy requires an exorbitant amount of components and steel.

Version history[edit]