In stormwater management, what is a "catch basin"?

A catch basin is defined as a structure specifically designed to collect stormwater runoff while allowing sediment and debris to settle out of the water prior to its entry into the drainage system. The primary purpose of a catch basin is to manage water flow during rainfall events and help maintain water quality by filtering out contaminants that could negatively impact the environment.

In practical terms, a catch basin often consists of a chamber with a grated top, allowing water to flow in while trapping larger particles and debris within the basin. This functionality is crucial for preventing clogs in stormwater drainage systems and reducing the overall pollution load entering local waterways.

Understanding the role of catch basins in stormwater management is vital for ensuring effective drainage and improving water quality, which is essential in urban planning and environmental protection efforts.