RotterdamIntroduction to a type
The Netherlands has a tradition of discharging rainwater underground via an extensive sewerage system. Despite having a number of visually-prominent canals, the Dutch city has relatively little surface water where the rain can be retained. And the sewerage system already has difficulty coping with the rainwater when it rains heavily. In the coming decades it will not only rain more frequently, but the downpours will also be more intense. These peak downpours create problems in the densely-populated urban area: the rainwater drains too slowly because of all the surfaced space. This is when the sewerage system becomes overloaded the streets become flooded, leading to difficulties and damage. These large puddles and pools of water are a nuisance, pedestrians cannot keep their feet dry when walking about the city. The flooding causes damage to cellars and houses, shops and catering basements. This is why we are introducing a new type of rainwater storage: the water square.
Possible futures for the urbanised areas in the Rijnmond- Drechtsteden region until 2100