china europe cooperation on “sponge cities” files...china europe cooperation on “sponge...
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Co-funded by the
European Union and P.R. China
China Europe Cooperation on “Sponge Cities”
AIWW
Gerard de Vries,
Programme Manager CEWP-PI Water and Urbanization
Amsterdam November 6, 2019
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Hori
zonta
lActi
vit
ies
Pro
gra
m
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European Consortium for CEWP-PI
Rijkswaterstaat
The Netherlands
Turku University of Applied
Science
Finland
University of Copenhagen
Denmark
RISE Research Institute of
SwedenCEWP-PI
Water and Urbanisation
Gerard de Vries, Rijkswaterstaat
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CECoSC Partnership
EU Partners CN Partners
Lead Partner
Partner Beijing Water Authorities
Partner City Beijing
Partner
Partner Chinese Academy of Urban
Planning and Development
Partner
Partner City Changde (Hunan
Partner
Reference Cities
Amsterdam, Turku,
Copenhagen, Gothenburg
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The sponge city concept (SCC)
Nguyen et al., 2018
‘The sponge city approach
promotes water resilient, low
impact development
integrated with urban
planning and construction,
allowing cities to function
much like a sponge by
absorbing rainwater that both
mitigates flooding while also
storing and purifying water to
meet future use’ (SC 2013, 2015)
In short: Water responsive
cities capable of absorbing
and retaining rainwater.
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Less discharge, more retention
conventionalSponge city
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Wadi system
Green roof
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Water Square
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Bypass, room for the river
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Shared Problem Analyses
• The need for more integrated and adaptive aproach
• The need for improved decision support tools
• Costs and (long term) financing, currently huge costs that do not make the concepts sufficiently sustainable
• The need for learning and upscaling between and beyond existingsponge cities
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CECosC Project Architecture
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Interaction
WP7 WP8
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Shared Challenges and Opportunities*
1. Decision Support Tools for SCC
=> Balancing blue green & grey (traditional) drainage systems
2. Economic evaluation blue green infrastructure
3. Monitoring blue green infrastructure
4. Co-creation and community involvement
5. Governance
*results from City Profiling workshops/sessions
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Transition of cities towards resilience and sustainability
How to make the most of our
investments in stormwater
management?
Huge and complex task requiring new
skills, technologies and products
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DSS for mutual learning
With a comparative Decision Support System it is easier to collaborate
CECoSC main objective: efficient exchange of knowledge and knowhow on how to
ensure resilient and sustainable urban water management in China and Europe
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The DSS reflects an integrated assessment framework
Develop and analyse adaptation pathways
(Economic) Assessment
Objectives, Criteria & Thresholds
Situation prior implementation- Hydrological system
- Socio-economic system
- Institutional system
Future scenarios- Rainfall
- Urbanisation
- Other relevant climate/socio-economic changes
Decision context
System assessment
Assessment of spongecity projects
Recommendations
Define potential Sponge Cities optionsBased on objectives, current and future risks & boundary conditions
Multi-criteria
analysisCost-effectiveness
analysisCost-Benefit analysis
Policy recommendations
Develop urban stormwater plan
Scorecard
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Thank you!www.cewp.eu
Twitter @ChinaEUwater