• What Is Low Impact Design (LID)?

    Low Impact Design (LID) refers to managing stormwater runoff at the source (on-site) using green infrastructure techniques. Keeping water on-site reduces the need for much larger and more costly management systems. It also helps prevent flooding by reducing the amount of water that enters surface waterways during flash flood events. Conventional stormwater management uses a pipe-and-pond technique which replaces natural systems with concrete, pipes, ponds, and extensive infrastructure. These systems channelize the water and increase its velocity; thereby greatly increasing the risk of erosion. The goal of LID is to replace these pipes and ponds with soft engineering practices that: filter, infiltrate, store, and evaporate the run-off on-site. Incorporating LID early in the planning and design of a project has proven to be much more cost-effective while also providing a community benefit and a much better-looking project. Each of these major components of LID is discussed below.  Read more >