Storm water solution
Storm water solutions as part of a green infrastructure methodology
Our growing and increasingly dense cities, with continually expanding impervious surfaces, put pressure on existing water drainage systems. Additionally, future climate change scenarios such as more intense rain events may further complicate the situation. This highlights the need for sustainable storm water management solutions.
The Sweco Urban Insight report "From threat to opportunity – revaluating storm water management in urban areas" details how storm water solutions may be used as a natural and multi-functional part of green infrastructure development.
European perspectives on storm water management – Sponge city
The traditional approach for safe discharge of rainwater into a receiving waterbody during rainfall-runoff processes in urbanised areas – either in combined sewers and/or in storm water drainage systems – dramatically changed during the 20th century due to the expansion of urban areas.
In some cases, conventional engineering methods, such as sewers, have been complemented or replaced with alternatives using the green infrastructure approach. Examples include raingardens, green belts or grassed dry retention ponds. Also, modelling and master planning has become an important part of storm water management in cities.
What is green infrastructure?
The European Commission defines green infrastructure as:
A strategically planned network of high quality natural and semi-natural areas with other environmental features, which is designed and managed to deliver a wide range of ecosystem services and protect biodiversity in both rural and urban settings.