What is a primary benefit of stormwater management features such as green infrastructure in site design?

What is a primary benefit of stormwater management features such as green infrastructure in site design?

• A. Manage runoff and pollutant loads, reduce flood risk, and provide ecological benefits.
• B. Increase heat loss.
• C. Decrease biodiversity.
• D. Add cost with no benefits.

Answer: (A)

Green infrastructure in site design focuses on controlling rain where it falls by slowing, storing, and filtering runoff. The main benefit is to manage runoff and pollutant loads, reduce flood risk, and provide ecological benefits. When rain falls on a designed landscape—like rain gardens, bioswales, green roofs, and permeable pavements—it is treated on-site: water infiltrates, is stored, or is slowly released, which lowers peak flows that can overwhelm drainage systems and cause floods. The filtering and native vegetation capture sediments, nutrients, metals, and other pollutants, improving water quality before it reaches streams. At the same time, these features create habitat, support urban biodiversity, and can help cool the area through evapotranspiration, contributing to a more resilient and healthier urban environment. The other options describe effects that green infrastructure does not aim for and would not reflect its benefits, such as increasing heat loss, decreasing biodiversity, or adding costs without providing tangible advantages.

Green infrastructure in site design focuses on controlling rain where it falls by slowing, storing, and filtering runoff. The main benefit is to manage runoff and pollutant loads, reduce flood risk, and provide ecological benefits. When rain falls on a designed landscape—like rain gardens, bioswales, green roofs, and permeable pavements—it is treated on-site: water infiltrates, is stored, or is slowly released, which lowers peak flows that can overwhelm drainage systems and cause floods. The filtering and native vegetation capture sediments, nutrients, metals, and other pollutants, improving water quality before it reaches streams. At the same time, these features create habitat, support urban biodiversity, and can help cool the area through evapotranspiration, contributing to a more resilient and healthier urban environment. The other options describe effects that green infrastructure does not aim for and would not reflect its benefits, such as increasing heat loss, decreasing biodiversity, or adding costs without providing tangible advantages.