Professor Chris Kilsby comments on how to better prepare for and adapt to flooding in the UK.
There is no panacea for flood events, but there is a portfolio of measures we could either do better or should consider in mitigating or adapting to floods in the UK and countries throughout the world. The recent floods caused by Storm Desmond the first week of December 2015 were devastating on both sides of the Pennines. A record breaking 341mm of rain fell in 24 hours. Not only was the 24 hour rain fall record broken, but so was the 48 hour record at 405mm. The damages were significant with tens of thousands of people evacuating their homes, widespread power loss after two substations were flooded, and transport links lost across the region.
While the magnitude of the storm rainfall was extreme, what made the flood especially severe is that the previous two months were very wet. Extreme weather events like Storm Desmond tend not to occur in isolation and nor are they evenly spaced out. In Cumbria there had already been a cluster of previous storms and this was the big one.
To manage such large floods requires an understanding of the occurrence of sequences of intense rainfall and how they may be changing, but also of course learning to deal with the flood waters in ways that are affordable and sustainable.