In Finland urban wetlands are being implemented to help improve water quality, absorb storm water volume and flow control, and improve the land-water habitats for urban communities. The wetlands are designed to respond to the needs and negative impacts of urbanization and therefore, public acceptance and multifunctional benefits are central to the design and implementation of the wetlands. The acceptance and understanding of the importance of urban dwellers is important and thus the project sought to demonstrate several benefits of functional wetlands.
Urban floods or intra-urban floods are composed of storm water runoff induced by heavy precipitation on urban surfaces, and includes surface flood waves, internal flooding of areas and properties through overloaded sewer systems as well as through backing up of culverted and other water courses. Urban floods are characterised by fast onset, high dynamics of discharge and often uncertain pathways of the flood water.