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This article is about installations designed to capture and convey surface runoff along a vegetated channel, whilst also promoting infiltration. <br>
This article is about installations designed to capture and convey surface runoff along a vegetated channel, whilst also promoting infiltration. <br>
For underground conveyance which promotes infiltration, see [[Exfiltration trenches]].
For underground conveyance which promotes infiltration, see [[Exfiltration trenches]].
[[File:20161024 100338 550x550.jpg|thumb|Bioswale, County Court Boulevard, Brampton]]
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==Overview==
==Overview==
Swales are linear landscape features consisting of a drainage channel with gently sloping sides. Underground they may be filled with engineered soil and/or contain a water storage layer of coarse gravel material. Two variations on a basic swale are recommended as low impact development strategies, although using a combination design of both may increase the benefits:<br>
Swales are linear landscape features consisting of a drainage channel with gently sloping sides. Underground they may be filled with engineered soil and/or contain a water storage layer of coarse gravel material. Two variations on a basic swale are recommended as low impact development strategies, although using a combination design of both may increase the benefits:<br>