The purpose of the project is to investigate how elements of SUDS (Sustainable Urban Drainage Systems) can be implemented in the renovation of the residential area 'Kildeparken' in the eastern part of Aalborg. Here the objective is to manage all stormwater locally, without major consequenses outside the area of 'Kildeparken' in cases of extreme rain events. At the same time a recreationel environment, with water included, when it is not raining should be insurered.

Through analysis of the terrain, the soil composition, the location of the groundwater table and the economic values in the area, it was investigated where in 'Kildeparken' SUDS-solutions could be implemented. The requirements for implementation where possible percolation, transportation and storage of stormwater.

Following the results of the analysis a number of solutions where implemented consisting of various compositions of SUDS-solutions such as green roofs, permeable pavement, channels and retension bassins. The solutions were based on ideas from the masterplan of the renovation called 'Kildeparken 2020' combined with own ideas based on the analysis.

The solutions were tested in two models; 'the capasity model' and 'the surface runoff model'. 'The capasity model' is a simple massbalance model setup in MATLAB. It simulates how the capasity of the SUDS-solutions' is being utilized during the events of a 13 year long historical rainseries. 'The surface runoff model' is setup in MIKE URBAN and simulates the flooding following the impacts of a single synthetic extreme event.

The results of the investigation in the project are: That it is possible to deal with a rain event with a return period of 50 years inside the area by the use of SUDS without causing floodings outside Kildeparken. Also it was found that with the right design of the required storage capasity it will be possible to reach a recreationel environment in terms of permanent water in the bassins and running water between them.