Vijverhofstraat is climate adaptive

With the changing weather, extreme amounts of rain fall more often in a short period of time. This is already happening and will become more common in the future. With such heavy rain, the sewage system cannot immediately process the large amount of water. This leads to nuisance, such as puddles of water on the street and damage to buildings. Climate-adaptive measures have therefore been taken in Vijverhofstraat.

Separate sewage system
The sewage system carries domestic waste water to the waste water treatment plant. A separate DIT sewer has been installed next to the sewerage system. DIT stands for Drainage and Infiltration Pipeline with Transport Function. This collects rainwater that sinks into the subsoil and slowly drains it to the Noordsingel. In this way, the rainwater is not unnecessarily discharged to the wastewater treatment plant and benefits the area.

Water storage
Water storage facilities have been created under the road and around the trees in Vijverhofstraat to collect and temporarily store rainwater. From there, the water slowly sinks into the subsoil and can be drained away or absorbed by the trees.

Water storage under the road
Rainwater on the street is drained via gullies to a water storage facility under the roadway. This system is called AquaFlow®. A thick layer of granulate between water-permeable cloths temporarily retains the water and gently releases it to the surface. There it is collected in the clean water sewer and disposed of.

Kolken
A gully is a drain in the road surface. Rainwater that falls on the road flows down to the gutters and is led via gullies to the water storage under the road surface.

DIT sewer
A Drainage and Infiltration Transport Pipeline is a perforated water drainage pipe. Clean water is collected from the subsurface through the holes in the pipe and transported to the Noordsingel for drainage.

Trees
Trees absorb a lot of water, thus relieving the sewage system. The tree growing places have been made larger to be able to collect more rainwater. The soil holds the water and the tree roots absorb it.

Water storage around the trees 30 m3
Water storage under the road 606 m3
Water storage in total 636 m3
This is 3,262 full bathtubs!