Hydroeconomic optimization of mesoscale blue-green stormwater systems at the city level

Research output: Contribution to journalArticle


The development of tools to help cities and water utility authorities communicate and plan for long-term sustainable solutions is of utmost importance in the era of a changing and uncertain climate. This study introduces a hybrid modeling concept for the cosimulation of mesoscale blue-green stormwater systems and conventional urban sewer networks. The hybrid model successfully introduces the retention/detention effects of mesoscale blue-green stormwater systems to the hydraulic dynamics of the sewer network. The cosimulation package was further facilitated with a cost-oriented multiobjective optimization algorithm. The aim of the scalar multiobjective optimization was to minimize the total cost comprising both flooding costs and action costs – both parameters solely representing the financial components of cost – through optimal placement of mesoscale blue-green systems of optimal size. The suggested methodology provides a useful platform for sustainable management of the existing sewer networks in cities from a hydroeconomic perspective.


External organisations
  • DHI Denmark
  • DHI Sverige AB
  • Sweden Water Research AB
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Civil Engineering
  • Water Engineering
  • Infrastructure Engineering


  • Blue-green stormwater, Mesoscale, Macroscale, Urban Drainage, Urban Infrastructure, Optimization, Hybrid modeling, Cosimulation
Original languageEnglish
Article number124125
JournalJournal of Hydrology
Publication statusPublished - 2019
Publication categoryResearch

Related research output

Salar Haghighatafshar, 2019 Sep 16, Lund: Water and Environmental Engineering Department of Chemical Engineering. 133 p.

Research output: ThesisDoctoral Thesis (compilation)

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Related projects

Ronny Berndtsson, Rolf Larsson, Johanna Sörensen, Shifteh Mobini, Miklas Scholz, Karin Jönsson, Misagh Mottaghi, Henrik Aspegren, Salar Haghighatafshar, Per Becker, Catharina Sternudd, Jonas Nordström, Jerry Nilsson, Petter Pilesjö & Andreas Persson


Project: ResearchInterdisciplinary research, Collaboration with municipalities and county councils

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