Which structure allows water to enter a storm sewer and regulates flow?

The inlet structure is designed specifically to facilitate the entry of water into a storm sewer system while controlling the flow. Its primary function is to capture surface runoff and direct it into the drainage system, helping to prevent flooding and manage stormwater effectively.

Inlet structures can come in various designs, such as grated inlets or curb inlets, which allow excess rainwater to flow into the storm sewer while filtering out debris. This is crucial for maintaining the performance of the stormwater management system by ensuring that the flow of water is regulated and that the sewer does not become overwhelmed.

This mechanism is vital in urban areas where impervious surfaces lead to increased runoff, and an effective inlet system helps to mitigate the impact of heavy rainfall events. By managing the entry of water, the inlet structure plays a key role in flood prevention and overall stormwater management strategies.