Cast Iron (CI)

SewerAn underground pipe or conduit for transporting stormwater and/or wastewater. pipe material, sometimes provided as ductile cast iron.

Catastrophic Rainfall

RainfallPrecipitation in the form of water (usage includes snow). event of return frequency far in excess of any event collection system design performance criteria typically, say, a 1 in 200 year storm.

Catch Basin

A small buried structure to divert overland stormwater flow into sewer flows.

Catchment

A geographical area draining to a sewer or receiving water.

Categorization

A structured process of placing items into sets according to related characteristics for prioritization.