A framework to assess the effects, cost and benefits of nature-based solutions for urban flooding mitigation. The scenario of a restored urban river in Copenhagen

Peter van der Keur1, Jacob Kidmose2, Hans Jørgen Henriksen2, Morten Ejsing Jørgensen3 and John Joyce4, (1)Geological Survey of Denmark and Greenland, København K, Denmark, (2)Geological Survey of Denmark and Greenland, Copenhagen, Denmark, (3)City of Copenhagen, Copenhagen, Denmark, (4)Stockholm International Water Institute, Stockholm, Sweden