Biowater re-introduces the village pond as a rainwater reservoir in dense urban areas.

Increasing nature and biodiversity in towns and cities
Biowater re-introduces the village pond as a rainwater reservoir in dense urban areas. The village pond is a meeting place for residents to enjoy, while allowing greater biodiversity in cities and towns as a natural habitat for animals and plants.

Biowater is a holistic solution, which integrates water management with human recreation, nature and biodiversity into a single unified service. The aim is to re-create the village pond as a combined rainwater reservoir, a space for people to relax and a living space for animals and plants. The key to the concept is that it is modular and scalable, which is easy to implement, is inexpensive and which combines the best from standardised dry well solutions with high volume capacity and unique construction projects with the possibility for local and site-specific adaptation.

Biowater is offered in two different versions. In one version, it is in ground level, so there is free transition from the ground to the reservoir. In the second version, it is raised above the ground, where Biowater becomes part of the urban space. The above-ground version of Biowater is selected for those locations where it is not possible to excavate in the ground. This model will typically be used in dense urban areas, where there is a lot of infrastructure in the ground and where seepage is not possible.

Biowater manages rainwater from roofs. It is possible to choose whether there shall be seepage from the installation – which if so, will occur in the reservoir’s sides above the permanent water level. The rainwater is managed through a combination of storage, delay, evaporation and seepage, where possible.
The project is not just an answer to the need for climate adaptation in cities and towns, but also a supplement to the decrease of natural areas in the open countryside, which means that animals and plants increasingly are dependent on towns and cities to be able to live and survive. Nature inside urban spaces is therefore becoming more and more important for biodiversity. Biowater can be built on large and small scales, for example in squares, courtyards and gardens.

Amphi Consult
Aarhus Municipality
GHB Landscape Architects
Mangor & Nagel Arkitektfirma
Danish Technological Institute

About author

Klimaspring is setting a new agenda for climate adaptation in dense urban areas, focusing on development, innovation and growth potentials. The goal of Klimaspring is to create better cities and green growth.

Primary contact
Marzenna Rasmussen

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