Inlet sumps: Gallery

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  This inlet channels flow from an underground pretreatment unit onto the surface of a large bioswale, Mississauga Road, ON

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  This bioretention facility is sunken from it's surrounding landscape, in part to accommodate the drop the the catchbasin inlet. Elm Drive, ON

Initial capturing and removal of unwanted contaminants, such as debris, sediment, leaves and pollutants, from stormwater before reaching a best management practice; Examples include, settling forebays, vegetated filter strips and gravel diaphragms.

Box like underground concrete structure with openings in curb and gutter designed to collect runoff from streets and pavement.