Sustainable Urban Drainage Systems by Robert Mackey Adapted from a presentation by Dr David Skidmore.

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Presentation transcript:

Sustainable Urban Drainage Systems by Robert Mackey Adapted from a presentation by Dr David Skidmore

Impervious surfaces increase peak water run-off

Sustainable Drainage Systems need to: - Hold water to stop flash floods Allow water to soak away gradually Hold back as many pollutants as possible from entering water courses Be suitable in safety and aesthetics for their residential or industrial development

SUDS Water run-off is treated through: 1.Good housekeeping 2.Source controls 3.Site controls 4.Regional controls

SUDS

Good Housekeeping Aims to keep pollutants away from run-off through Management of the drainage system Monitoring Education Care of disposal including oil and litter

Source controls Controlling run-off at or near its source For example: - Water butts Grass roofs Water meters

Site controls These can work over larger sites Normally hectares Swales Gravel car parks Infiltration Filter drains Detention basins

Regional Controls Collect water from several sub- catchments Usually with area more than 10 hectares Large detention basins Ponds wetlands

SUDS can offer Improved water quality A range of wildlife habitats Aesthetic value Recreational value