Control Rules (SWMM)

It is possible to control the operation of regulatory structures, such as pumps, orifices and weirs in a SWMM network during a simulation using control rules.

The type of object that can be governed by a control rule, and the property setting that can be changed by a rule are listed below:

 

Ancillary object	Setting
Pump	On/off status, and pump speed
Orifice	The size of the opening of the orifice
Weir	The crest height of a weir
Outlet	The flow through an outlet

 

Control rules can be used to specify conditions, such as water elevation at certain nodes, flow in certain links, and a simulation time, that trigger a specified change in a link’s setting. The hydraulic analysis methods used by ICM during simulation take into account the current setting for the regulator in the SWMM network.

Control rules are specified using the Control Rules Editor, and follow a specific format which is described in the Control Rules Format topic.