Is that the Yorkshire Broads, or the Yorkshire Levels?
Last year we had a village flooded, for several months, and it wasn't anywhere near sea level, or a river. The hills were so sodden that they drained off onto the roads. One lane up the side of a hill turned into a shallow river. Numerous roads were closed for many weeks. We had some heavy rain about 15 years back but otherwise I don't recall the sort of flooding we've been getting over the last few years.