| dc.description.abstract | Climate change brings many challenges to cities of the world. One of them is an increase in precipitation, especially in the areas where it is already high. One example is the city of Stavanger, a case study for this project. Most cities are covered in asphalt, concrete and other impermeable materials, preventing stormwater from absorbing into the ground. Nature-based solutions (NBS) allow the retention process and, at the same time, bring many other benefits. The primary motivation behind this project is to investigate the role of green infrastructure (GI) in stormwater management and flood reduction. This study is critical because many large cities in Europe are already affected by high precipitation or will be in the near future. The results can be used as a part of stormwater management policymaking. The efficiency of the different types of GI was examined in two drainage basins in Stavanger using Rational method calculations, hydrological modelling with HEC-RAS software and scenario development. The calculations show the possible change in runoff volumes up to 9.4% of the initial amount. The hydrological modelling showed visible changes in flood reduction compared to the existing flood situation in the 100-year event. GI appear to be a good and multifunctional stormwater management tool, which should be a part of every city. Nevertheless, from the results, it is clear that GI, despite its undeniable benefits, can be used only in combination with the traditional flood measures in order to provide sufficient protection for the cities facing climate change. | |
