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Module 3: Exploring the options. SWITCH Training Kit Module 3B: Sustainable Stormwater Management An overview. The issues facing urban stormwater management. Inadequately designed and maintained infrastructure. Increased urbanisation. Changing weather patterns due to climate change. - PowerPoint PPT Presentation
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SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Module 3: Exploring the options
SWITCH Training Kit
Module 3B: Sustainable Stormwater Management
An overview
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
The issues facing urban stormwater management
Changing weather patterns due to climate change
Increased urbanisation
Fragmented management structures
Inadequately designed and maintained infrastructure
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Links between stormwater management and other areas of the water sector
Water supply
Wastewater management
Water treatment
Water quality
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Links between stormwater management and other sectors of urban management
Roads and transport
Solid waste
Parks and gardensLand-use management
Housing
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
The conventional approach
• Combined sewers
• Concrete drainage culverts, channels and pipes
• Disposal of stormwater directly into rivers, lakes and coastal waters
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Drawbacks of the conventional approach to stormwater management
• Increased downstream flood risk
• Erosion and sedimentation
• Overflows in combined sewer systems
• Pollution of receiving water bodies
• Waste of a valuable resource
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
A more sustainable approach
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
• Structural SUDS (such as swales, ponds, porous paving and green roofs)
• Non-structural SUDS (such as site planning, pesticide and fertiliser management, and public education and awareness raising campaigns)
A more sustainable approach (SUDS)
Options include:
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
The concept of Water Sensitive Urban Design (WSUD):
• Stormwater attenuation and retention• River restoration• Combining water infrastructure with landscape design• Embedding water management into existing urban and
regional planning• Incorporating water recycling facilities into urban
architecture
A more sustainable approach (WSUD)
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Benefits of sustainable urban drainage solutions and WSUD
• Flood control
• Pollution control
• Protection against erosion
• Aquifer replenishment
• Alternative source of water
• Amenity value
• Climate change adaptation
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Why the non-conventional approach is more sustainable
Amenity value
Reduced flood risk
Reduced treatment and pumping costs
Reduced flood risk
Protection and enhancement of natural habitats
Reduced pressure on natural water supply sources
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Structural SUDS
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Non-structural SUDS
SWITCH Training Kit: Module 3B – Sustainable Urban Drainage
Acknowledgements
Ralph Philip and Barbara Anton ICLEI – Local Government’s for Sustainability
based on the joint efforts of the following SWITCH partners:Alison Duffy (University of Abertay), B. Ellis (Middlesex University), Chris Jefferies (University of Abertay), M. Revitt (Middlesex University), L. Scholes (Middlesex University), H. Sieker (Ingenieurgesellschaft Prof. Dr. Sieker mbH), B. Shutes (Middlesex University), M. Soutter (Swiss Federal Institute of Technology (EPFL), J. Eckart (HafenCity University, Hamburg), W. Holste (Middlesex University), H. Langenbach (HafenCity University, Hamburg), G Schröder (HafenCity University, Hamburg), I. Wagner (Technical University of Lodz)
The UNESCO-IHE led SWITCH project runs from Feb. 2006 to Jan. 2011 and is part-financed by Directorate General Research of the European Commission under the Sixth Framework Programme. For more information see www.switchurbanwater.eu
This presentation has been produced as part of the SWITCH Training Kit by: