Flow Attenuation

The process of reducing the peak flow rate in a collection system or of redistributing a proportion of the flow already in a collection system.

Flow Control

A method whereby normal sewer flows or a portion of normal sewer flows are blocked, retarded, or diverted (bypassed) within certain areas of the sewer collection system.

Flow Reduction

The process of decreasing flows into a collection system or of removing a proportion of the flow already in a collection system.

Flow Simulation

The replicating of flows in surface water or combined collection systems using a dynamic digital model.

Flow Split

Location where wastewater exits a manhole through more than one pipe. Also refers to a high point in the sewer system that causes wastewater to flow away from the manhole in more than one direction.