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→Concentrated overland flow
==Concentrated overland flow==
==Concentrated overland flow==
Where a [[Curb cuts| curb cut]], [[Downspout disconnection| a disconnected roof downspout]] or a [[Swales| swale]] directs surface water to a point, increasing the flow rate, one or more of the following pretreatment features should be considered:
Where a [[Curb cuts| curb cut]], [[Downspout disconnection| a disconnected roof downspout]] or a [[Swales| swale]] collects and conveys surface runoff as concentrated flow, which increases the flow rate, one or more of the following pretreatment features should be considered:
*[[Pretreatment features| Forebays]] (well suited for bioretention cells)
*[[Pretreatment features| Forebays]] (well suited for bioretention cells)
*[[Sand filters]] (well suited for underground [[infiltration]])
*[[Sand filters]] (well suited for underground [[infiltration]])