The case for using Low Impact Development and vegetated stormwater management on roadsides.
Municipalities have long citied the need to upgrade stormwater management to protect our Great Lakes and build resiliency in the face of extreme weather events. Incorporating LID into the urban landscape can help municipalities reduce risk and avoid costly upgrades to conventional infrastructure. By increasing infiltration and evaporation, LID practices reduce the amount of stormwater runoff produced and ease the burden to municipal infrastructure, extending its life and reducing investment needed to install, maintain, repair and upgrade the system.
A common misperception is that bioretention practices must use plants as the only source of vegetation. In fact, the term “bioretention” refers to the engineered bioretention soil media that forms the base for the practice. Bioretention areas can be landscaped with turf or with plants. Selecting either grass or plants for a particular bioretention practice depends on a variety of factors. In general, planted bioretention areas are recommended for higher profile settings where sufficient municipal resources (financial and staff time) can be dedicated to building community buy-in and conducting regular inspection and maintenance.
(Undated, likely 2013) Draft report by Credit Valley Conservation, Water Canada and Aquafor Beech.