sustainable urban drainage systems by robert mackey adapted from a presentation by dr david skidmore
TRANSCRIPT
Sustainable Urban Drainage Systems
by Robert MackeyAdapted 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 throughManagement of the drainage system
Monitoring EducationCare of disposal including oil and litter
Source controlsControlling run-off at or near its source
For example: -Water buttsGrass roofsWater meters
Site controlsThese can work over larger sitesNormally 2 - 5 hectaresSwalesGravel car parksInfiltrationFilter drainsDetention basins
Regional Controls
Collect water from several sub-catchments
Usually with area more than 10 hectaresLarge detention basinsPondswetlands
SUDS can offer
•Improved water quality
•A range of wildlife habitats
•Aesthetic value
•Recreational value