Which structure is designed to collect stormwater debris and is cleaned to prevent odors and mosquitoes?

Which structure is designed to collect stormwater debris and is cleaned to prevent odors and mosquitoes?

• A. Inlet Box
• B. Catch Basin
• C. Grit Chamber
• D. Retention Basin

Answer: (B)

This item tests your understanding of which stormwater structure is built to collect debris and be cleaned out to prevent odors and mosquito breeding. A catch basin is placed at street inlets and includes a bottom sump where debris, leaves, and sediment settle out before water moves downstream. This design makes it easy to access and remove the accumulated solids during routine cleanouts, which helps keep the system flowing and prevents stagnant water that causes odors and mosquito problems.

Inlet boxes are small access points that guide flow from streets into underground pipes and aren’t designed with a dedicated debris-sump cleaning routine for odor or mosquito control. A grit chamber focuses on removing grit like sand from water, typically in wastewater treatment, not primarily on stormwater debris or mosquito prevention. A retention basin stores stormwater to control peak flows and is not intended as the primary debris trap or odor/mosquito control feature.