Driehoeksplein in Rotterdam has been transformed from a stretched-out asphalt surface into a multifunctional climate park with an integrated Rockflow® Urban Water Buffer. This intervention has not only made the square more attractive and greener, but also allows it to play an active role in urban water management: rain peaks are collected and filtered locally, and stored water is made available for dry periods. The project demonstrates how simple, smart interventions can increase the sponge effect of the city while improving water quality and ecology.
The challenge
Before the redevelopment, Driehoeksplein was primarily a hard, impermeable surface. During heavy rainfalls, water quickly accumulated on the street, placing unfavourable peak loads on the sewer and water systems. At the same time, dry periods in the city have become longer and more frequent, leading to local shortages of greenery and vegetation. This dual challenge — both peak flooding and periods of scarcity — called for a local solution that could retain and filter rainwater and make it reusable for public spaces. In addition, there was a need for a design that improves the quality of life: more greenery, shadow and space for people to meet had to be central to the redevelopment.
