SUDS/LID Controls

Sustainable Urban Drainage System (SUDS) control objects in InfoWorks networks and Low Impact Development (LID) control objects in SWMM networks are specified as part of the Subcatchment data and are used to define the parameters which model the outflow from the SUDS or LIDs structures which are located within a subcatchment.

In InfoWorks networks, new SUDS control objects can be created either in the SUDS control tab of the Subcatchments Grid or by clicking on the button adjacent to the SUDS controls field in the subcatchment Property Sheet.

Similarly in SWMM networks, new LID control objects can be created either in the LIDS control tab of the Subcatchments Grid or by clicking on the button adjacent to the LID controls field in the subcatchment Property Sheet.

The control parameters can, however, only be modified or deleted from the SUDS control or LID control tab in the Subcatchments Grid.

Once defined, the SUDS control or LID control objects can be associated with the SUDS or LIDs structures, located within the subcatchment, by clicking on the button in the SUDS controls or LID controls field in the subcatchment properties. This displays the Subcatchment SUDS controls grid or Subcatchment LIDS controls grid, where you can select the required object from the SUDS control ID or LIDS control ID field.

The control and performance summaries for the SUDS structures in an InfoWorks network, whose control objects are included in a simulation, can be viewed as a SWMM SUDS text report.

The performance of the LID controls in a SWMM network is reflected in the runoff calculated for each subcatchment and reported in the subcatchment results.