definition

Filter strips are gently sloping, vegetated strips of land that provide opportunities for slow conveyance and infiltration (where appropriate). They are designed to accept runoff as overland sheet flow from upstream development and often lie between a hard-surfaced area and a receiving stream, surface water collection, treatment or disposal system.
(Susdrain, Filter strip, accessed on Sept. 2016)

Co-benefits and impacts

They treat runoff by vegetative filtering, and promote settlement of particulate pollutants and infiltration. Other advantages are that filter strips are well suited to implementation adjacent to large impervious areas, they encourage evaporation and can promote infiltration, they are easy to construct with low construction cost and they can easily integrated into landscaping and can be designed to provide aesthetic benefits. Nevertheless, filter strips do not provide significant attenuation or reduction of extreme event flows.
(Susdrain, Filter strip, accessed on Sept. 2016)

conditions

Filter strips are not suitable for steep sites or for draining hotspot runoff or for locations where risk of groundwater contamination, unless infiltration is prevent
(Susdrain, Filter strip, accessed on Sept. 2016).

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Last modified: Sept. 21, 2016, 9:56 a.m.