Bio Swales

Bioswales are typically vegetated, mulched, or xeriscaped. They consist of a swaled drainage course with gently sloped sides. Bioswale design is intended to safely maximize the time water spends in the swale, which aids the collection and removal of pollutants, silt and debris. Depending on the site topography, the bioswale channel may be straight or meander. Check dams are also commonly added along the bioswale to increase stormwater infiltration. A bioswale's make-up can be influenced by many different variables, rainfall patterns, site size, budget, and vegetation suitability.

It is important to maintain bioswales to ensure the best possible efficiency and effectiveness in removal of pollutants from stormwater runoff. Planning for maintenance is an important step, which can include the introduction of filters or large rocks to prevent clogging. Annual maintenance through soil testing, visual inspection, and mechanical testing is also crucial to the health of a bioswale.

Columbia Drain Co is certified as a Bio Swale maintenance company. While landscapers are typically hired to maintain the facility, these need so much more than just mowing the grass. They require annual inspections. Some replanting may be required. There is a drain at the end of these facilities. They are called Ditch Outlets or Swale Structures. Annual cleaning is recommended on these structures as well.