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Efficiency of stormwater control measures for combined sewer retrofitting under varying rain conditions: Quantifying the Three Points Approach (3PA)

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  • Sørup, Hjalte Jomo Danielsen
  • Lerer, Sara Maria
  • Arnbjerg-Nielsen, Karsten
  • Mikkelsen, Peter Steen
  • Rygaard, Martin

Abstract

We present a method to assess and communicate the efficiency of stormwater control measures for retrofitting existing urban areas. The tool extends the Three Points Approach to quantitatively distinguish three rainfall domains: (A) rainwater resource utilisation, (B) urban stormwater drainage pipe design, and (C) pluvial flood mitigation. Methods for calculating efficiencies are defined recognizing that rainfall is both a valuable resource and a potential problem. Efficiencies are quantified in relation to rainfall volume, supplied potable water volume and volume of wastewater treated. A case study from Denmark is used to illustrate how the efficiency varies between the rainfall domains. The method provides a means for communicating some important quantitative aspects of stormwater control measures among engineers, planners and decision makers working with management of water resources, stormwater drainage and flood risks.

Suggested Citation

  • Sørup, Hjalte Jomo Danielsen & Lerer, Sara Maria & Arnbjerg-Nielsen, Karsten & Mikkelsen, Peter Steen & Rygaard, Martin, 2016. "Efficiency of stormwater control measures for combined sewer retrofitting under varying rain conditions: Quantifying the Three Points Approach (3PA)," Environmental Science & Policy, Elsevier, vol. 63(C), pages 19-26.
  • Handle: RePEc:eee:enscpo:v:63:y:2016:i:c:p:19-26
    DOI: 10.1016/j.envsci.2016.05.010
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    Cited by:

    1. Jonas Smit Andersen & Sara Maria Lerer & Antje Backhaus & Marina Bergen Jensen & Hjalte Jomo Danielsen Sørup, 2017. "Characteristic Rain Events: A Methodology for Improving the Amenity Value of Stormwater Control Measures," Sustainability, MDPI, vol. 9(10), pages 1-18, October.

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