Context

Grenoble is a particularly sensitive urban area to rising temperatures. Increasingly hot weather as well as overloading of the sewerage system are expected in the coming years.
This project, led by the city of Grenoble, is part of the Teisseire-Jeux-Olympiques concerted development area, currently in construction.

The initiative

The objective of this initiative is to combine alternative and innovative rainwater management techniques to reduce the dependence of Ouagadougou Park on drinking water and limit the volume of rainwater discharged into the combined sewer system. Located in the south-east of the city of Grenoble, this green area is a former industrial wasteland.
Ouagadougou Park has implemented a combination of multiple rainwater management solutions: collection, treatment by planted filtration, irrigation, recreational enhancement, and retention in a wetland. Thus, a wetland has been created together with filter massifs and the plantation of reeds.

Results, limits and enable factors

This innovative management of rainwater in the Ouagadougou Park saves drinking water, as the irrigation of the gardens is mainly done with rainwater. In addition to its ecological function, rainwater management also has recreational and educational functions.
From a biodiversity perspective, in 2012, four years after the park was commissioned, the wetland’s vegetation palette had become much more diverse.