How storm surge barriers can keep the Netherlands safe and liveable
A safe and liveable delta, who doesn't go for that? Storm surge barriers play a crucial role in this. Yet there are many choices to be made in the short term to keep the storm surge barriers in a good condition, to eventually cope with rising sea levels in the longer term. A new project receives funding from NWO for five years to explore the best routes to a liveable delta.
Storm surge barriers, like the Maeslantkering and the Oosterscheldekering are essential for protecting the Netherlands from high water coming in from the sea. How long will these imposing structures remain effective bearing in mind sea level rise, decay of the structures and an altering surrounding area. In the short term, decisions will have to be taken on maintenance, while in the longer term, adaptation or replacement should be considered.
Linking storm surge barriers with the delta
Within the SSB-Δ (storm surge barrier delta) project, a diverse consortium will investigate under what circumstances storm surge barriers can keep the Netherlands safe and liveable. The consortium consists of the universities of Delft, Utrecht, and Rotterdam; the universities of applied sciences of Rotterdam and Zeeland; knowledge institutes Deltares and TNO, as well as Rijkswaterstaat, water boards and companies.
Bram van Prooijen, associate professor at TU Delft, will lead the research: “Decisions on flood defences are important for the entire delta. The link between the hinterland and the flood defences needs to be made properly. During this project, we will have the opportunity to bring different areas of expertise together and strengthen each other.”
Long term perspective
Therefore, the research is not only about the technical lifespan of the barriers. It will also clarify how the delta is going to change and how society thinks about it, resulting in a guideline to on how and when decisions need to be taken in the short term, with a long term perspective.
Van Prooijen cites an example of car maintenance: “Think of replacing the engine block. This is very expensive maintenance, but sometimes necessary to keep the car running safely. But is it worth the investment if you plan to buy a new car next year? Or if you prefer to travel by train? Important choices will have to be made for storm surge barriers. We want to provide a strong basis for that.”
Informed decisions
The project will reveal the possible pathways to a liveable delta, and how storm surge barriers fit into that. Van Prooijen: “That offers clarity, to make quick and better-informed decisions. Many trials run for a long time, with the outcome of this research we can decide which trials specifically are the best option to proceed with.”
Future experts
One of the storm surge barriers involved in the research is the Maeslantkering. This barrier is expected to last another fifty years or so. That may seem far away, Van Prooijen reasons, “but we need to train the experts who will decide on this now. Those are probably the PhD students on this project.”