Sustainable Drainage System Terms A-Z
W
watercourse
A term including all rivers, streams ditches drains cuts culverts dykes sluices and passages through which water flows.
WRAP (Winter Rain Acceptance Potential)
Classification used to calculate the permeability of soils and the percentage run-off from a particular area.
wet
Containing water under dry weather conditions.
wetland
A pond that has a high proportion of emergent vegetation in relation to open water. (30 April 2004)
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