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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]] pipe, [[Swales| swale]], trench drain, side inlet catch basin or other pre-fabricated inlet structure collects and conveys runoff as concentrated overland flow, which increases 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]] pipe, [[Swales| swale]], trench drain, side inlet catch basin or other pre-fabricated inlet structure collects and conveys runoff as concentrated overland flow, which increases the flow rate, one or more of the following pretreatment features should be considered:
* Catch basin or other inlet structure sump;
* Catch basin or other pre-fabricated inlet structure sump;
* [[Level spreader]];
* [[Level spreader]];
*[[Pretreatment features| Forebays]] (well suited for bioretention cells);
*[[Pretreatment features| Forebays]] (well suited for bioretention cells);