Which of the following is an example of a structural BMP?

A drainage swale is a prime example of a structural Best Management Practice (BMP). Structural BMPs are designed to physically alter the landscape or hydrology to manage stormwater runoff, reduce erosion, and improve water quality. Drainage swales, which are shallow, vegetated channels that direct and convey stormwater runoff, effectively slow down and filter the water, allowing for sedimentation and other treatment processes to occur.

In contrast, vegetative buffer strips, mulching, and sod stabilization are categorized as non-structural BMPs. These methods typically focus on enhancing the existing land use practices with vegetation or soil amendments rather than implementing a constructed element designed to control water flow and quality. While they are important for erosion control and improving water quality, they do not involve the same level of structural modification to the landscape as drainage swales do.