Integrated Catchment Management

Stormwater - swales

Year of Publication :  
Region: (e.g. Canterbury or NZ-wide) New Zealand - wide
Description: Swales are vegetated areas used in place of curbs or paved gutters to transport stormwater runoff. They also can temporarily hold small quantities of runoff and allow it to infiltrate into the soil. A vegetated swale may also be known as a grassed channel, dry swale, wet swale or biofilter.

Vegetated swales can serve as part of a stormwater drainage system and can replace kerbs, gutters and storm sewer systems. Swales are best suited for residential, industrial, and commercial areas with low flow and smaller populations.