Swale (landform)

A swale is a shady spot, or a sunken or marshy place.^[1] In US usage in particular, it is a shallow channel with gently sloping sides. Such a swale may be either natural or human-made. Artificial swales are often infiltration basins, designed to manage water runoff, filter pollutants, and increase rainwater infiltration.^[2] Bioswales are swales that involve the inclusion of plants or vegetation in their construction, specifically.^[3]

^ Chambers Dictionary, Edinburgh, 1998, p. 1668.
^ "Storm Water Technology Fact Sheet: Vegetated Swales". Washington, D.C.: U.S. Environmental Protection Agency (EPA). September 1999. EPA 832-F-99-006.
^ "Stormwater Best Management Practice: Grassed Swales" (PDF). EPA. December 2021. p. 3. EPA 832-F-21-031P.

[1] Chambers Dictionary, Edinburgh, 1998, p. 1668.

[2] "Storm Water Technology Fact Sheet: Vegetated Swales". Washington, D.C.: U.S. Environmental Protection Agency (EPA). September 1999. EPA 832-F-99-006.

[3] "Stormwater Best Management Practice: Grassed Swales" (PDF). EPA. December 2021. p. 3. EPA 832-F-21-031P.

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