Councilman Hubert Schokker inspects the new overflow structure on Korte Vliet
A new overflow structure on the Korte Vliet. As a result, residents of Voorschoten can now expect fewer disruptions during heavy rain. Water Board Member Harry Kortman (director of the Rijnland Water Board) and Alderman Hubert Schokker witnessed the completion of the work last Wednesday.
An overflow is a structure in the sewer system that discharges excess rainwater. Previously, the overflows were located in small ditches in Voorschoten, which had poorer flow capacity than the current one at the Hooghkamer Bridge on the edge of the Korte Vliet.
Good news for residents
Councilman Hubert Schokker is impressed by the structure. But above all, he is happy for the residents of Voorschoten: “In recent years, during heavy rain, we’ve often had to deal with wet feet and even flooded gardens. That’s why we used the overflow structures on the small ditches. This new overflow structure helps keep the ditches in the village cleaner.”
Last resort
The overflow is therefore important. But discharging contaminated water remains a “last resort,” which the water board uses as little as possible. Alderman Schokker: “Fortunately, this will become less and less necessary over time thanks to the major reorganization of the sewer system, in which more and more properties are being disconnected. This is further reinforced by initiatives from residents, such as removing pavers and using rain barrels.”
Sustainable material
The spillway is made of cement-free geopolymer concrete. Water Board Member Harry Kortman: “This is a sustainable alternative to concrete. Its production emits far less CO2 than when using traditional concrete. A milestone for Rijnland and the municipality of Voorschoten.”