Last edited 14 Nov 2016

Swales definition

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Approved Document H - Drainage and Waste Disposal, describes ‘swales’ as:

‘…grass-lined channels which transport rainwater from a site as well as controlling flow and quality of surface runoff. Some of the flow infiltrates into the ground. There may be an overflow at the end into another form of infiltration device or a watercourse. They are particularly suitable for treatment of runoff from small residential developments, parking areas and roads.

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