# Routing Units

Routing Units are the spatial units in SWAT+ that allow us to lump outputs and route them to any other spatial object. Routing Units don't have a lot of properties as they mostly serve the purpose of collecting hydrographs and the simulation of the processes generating those is controlled by the properties of the individual elements within a routing unit.&#x20;

* [**rout\_unit.rtu**](routing-units/untitled) references other files specifying the elements that are part of a Routing Unit and its topographic and field properties.
* [**rout\_unit.def**](routing-units/untitled-1) specifies which elements a Routing Unit contains.
* [**rout\_unit.ele**](routing-units/untitled-2) lists all elements that are part of a Routing Unit.
