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Water 2017, 9(11), 883; doi:10.3390/w9110883

Integrated Hydrological Model-Based Assessment of Stormwater Management Scenarios in Copenhagen’s First Climate Resilient Neighbourhood Using the Three Point Approach

1
Department of Environmental Engineering (DTU Environment), Technical University of Denmark, Bygningstorvet, Building 115, 2800 Kongens Lyngby, Denmark
2
COWI A/S, Karvesvingen 2, 0579 Oslo, Norway
3
COWI A/S, Parallelvej 2, 2800 Kongens Lyngby, Denmark
*
Author to whom correspondence should be addressed.
Received: 14 September 2017 / Revised: 5 November 2017 / Accepted: 8 November 2017 / Published: 12 November 2017
(This article belongs to the Special Issue Urban Water Cycle Modelling and Management)
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Abstract

The city of Copenhagen currently pursues a very ambitious plan to make the city ‘cloudburst proof’ within the next 30 years. The cloudburst management plan has the potential to support the city’s aim to become more green, liveable, and sustainable. In this study, we assessed stormwater system designs using the Three Point Approach (3PA) as a framework, where an indicator value for each domain was calculated using state-of-the-art modelling techniques. We demonstrated the methodology on scenarios representing sequential enhancements of the cloudburst management plan for a district that has been appointed to become the first climate resilient neighbourhood in Copenhagen. The results show that if the cloudburst system is exploited to discharge runoff from selected areas that are disconnected from the combined sewer system, then the plan leads to multiple benefits. These include improved flood protection under a 100-years storm (i.e., compliance with the new demands in domain C of the 3PA), reduced surcharge to terrain under a 10-years storm (i.e., compliance with the service goal in domain B of the 3PA) and an improved yearly water balance (i.e., better performance in domain A of the 3PA). View Full-Text
Keywords: climate adaptation; combined sewer; cloudburst; flooding; hydraulic modelling; Three Point Approach (3PA); urban drainage climate adaptation; combined sewer; cloudburst; flooding; hydraulic modelling; Three Point Approach (3PA); urban drainage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lerer, S.M.; Righetti, F.; Rozario, T.; Mikkelsen, P.S. Integrated Hydrological Model-Based Assessment of Stormwater Management Scenarios in Copenhagen’s First Climate Resilient Neighbourhood Using the Three Point Approach. Water 2017, 9, 883.

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