Types of Green Infrastructure
Bioswales and Grassed Swales Bioswales are open channels that use vegetation or mulch to slow, filter and treat stormwater as it flows through a shallow channel or trench. A grassed swale is a variation that uses grass. Swales are linear practices, well suited for treating stormwater from highways or residential roads.
A swale is a grassy depression that controls stormwater velocity and infiltrates runoff where feasible. Swales are typically used to channel stormwater from a street or sidewalk to a rain garden or basin. Stormwater swales are vegetated channels that transport stormwater runoff.
PDF Swales Green Stormwater Infrastructure
Stormwater swales are vegetated channels that transport stormwater runoff. Swales are typically designed to control stormwater runoff velocity and infiltrate it where feasible.The systems are often used as pretreatment for another downstream stormwater tool, such as a rain garden or stormwater basin. They're most often planted with turf grass and maintained as lawn areas.
Green infrastructure swales in gardens manage stormwater by directing runoff through shallow, vegetated channels that promote infiltration and reduce erosion. These swales use native plants and soils to filter pollutants, improving water quality and supporting local biodiversity.
What is a swale
Integrate with other systems: Combine swales with rain gardens, stormwater basins, and other green infrastructure for comprehensive stormwater management. Community education: Inform residents and stakeholders about the importance of swale maintenance and the role these systems play in reducing flooding and protecting water quality.
Tour Green Infrastructure at the Reservoirs Take a self-guided tour along the shoreline of Griggs, O'Shaughnessy & Hoover Reservoirs to learn about the green infrastructure on site. Park visitors will see a variety of methods used to capture and treat stormwater flowing from nearby neighborhoods and roadways.
Vegetated Swales (Bioswales) in Urban Rewilding
Bioswales are shallow, vegetated channels designed to manage stormwater while restoring ecological functions in urban areas. By slowing, filtering, and absorbing rainwater runoff, bioswales reduce flooding and pollution while reintroducing soil, plants, and micro habitats into highly built environments. As part of urban rewilding, bioswales transform conventional drainage infrastructure into ...
Green streets reduce sewer overflows and backups by slowing and absorbing stormwater runoff from sidewalks and streets. Also known as rain gardens or bioswales, green streets are important to the City's sewer and stormwater systems. They also help prevent pollution from washing into our rivers.
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Description In the context of stormwater controls to improve water quality, a grassed swale is a vegetated, open-channel management practice that treats and reduces stormwater flows for a specified water quality volume. As stormwater flows along these channels, the vegetation slows it down, allowing for sedimentation, soil filtration and/or infiltration into the underlying soils. Variations of ...
Vegetated swales , also known as bioswales or biofilters, are sloped, low-lying areas designed to capture and treat stormwater . The swales collect stormwater runoff and allow it to soak into the ground at a slower rate. Specialized native plants help to treat the stormwater by absorbing pollutants and filtering suspended sediments.