[RF] Underground Detention Basin

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Author: [SSU]yenyang
Last revision: 25 Mar at 23:42 2017 UTC


Underground Detention Basin by [SSU]yenyang

Required Mod


Detains stormwater underground which slowly infiltrates into the ground.

Recommend using anarchy to place within a park.

Detention Capacity: 100000 units
Infiltration Rate: 250 units/min
Cost: 10000
Upkeep: 32/week
Electricity: 0 KW

Storm Drain Inlets and Pumps direct any storm water that is collected to Underground Detention Basins within the same district first, and then to Gravity Storm Drain Outlets and SD Force Main Outlets in the same district once the Detention Basins have reached 80% filled. Anything not included in a district is actually in District 0.

Underground detention systems must be empty before you can relocate/demolish them. Turning them off will prevent any more water from flowing to one.

Problems and How to Fix Them

Line Not Connected – You don’t have any inlets in the same district. Add an inlet in this district or move the basin to another district with an inlet.

Landfill Full – The detention basin is full. The basin will slowly drain at the infiltration rate. You can Turn Off the detention basin and no more water will flow to it if you want to drain it more quickly.

Rainfall Guide

See Official Rainfall Guide for more details about the Rainfall Mod

Special Thanks

Special Thanks to Snow_Cat because without Asset AI Changer & Asset UI Priority Changer, the storm drain assets would not have been possible.

How to show your Thanks

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Creative Uses

ms6615 pointed out on reddit that this can be used to create a septic/leech field to infiltrate polluted sewage water into the ground.

Required items:
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