After the North Sea Flood of 1953, it took nearly 45 years to finalize the Delta Works. If we want to protect The Netherlands against sea-level rise, we shouldn’t wait too long. But how much time do we have left? An international team of researchers from Utrecht University, Deltares, and NIOZ, among others, devised a new method to calculate when we can expect an increase in flood probability in a specific area. The calculations show that within 30 years, the estimated probability of flooding will be 10 times higher in more than a quarter of the places studied. The researchers published their results in Nature Climate Change.