What type of facility is necessary for handling stormwater at overflow parking?

Stormwater runoff facilities are designed to manage and control the flow of rainwater and melted snow from impervious surfaces, such as parking lots. These facilities can include various systems that capture, store, and treat stormwater, preventing flooding and protecting water quality.

When dealing with overflow parking, which can be subject to significant runoff due to the large, paved areas, having specialized structures is essential to manage this water effectively. Stormwater runoff facilities serve to reduce the volume of water that would otherwise flow directly into drains or nearby waterways, which can lead to erosion, pollution, and other environmental issues.

While other options like retention ponds, basins and trenches, and bio-swales are also important components of stormwater management, the term "stormwater runoff facilities" encompasses a broader range of strategies and devices that include these specific types, ensuring comprehensive management of the stormwater issues associated with overflow parking. This comprehensive approach highlights the importance of having adequate infrastructure to address the challenges posed by excess stormwater runoff.