I don't pretend to know any answers but how much rin has fallen upstream of tadcaster, what area has to drain down this bit of the foss?
The thing about balance ponds and big sponges is once they get full they don't hold any more back, so something designed to deal with everything but the 1 in 200 year flood isn't going to cope with the weather pattern shifting more rainfall into the winter months. Simple chaos theory says that as the energy in a system increases with increase temperature then the chaotic events are going to be more powerful, and it looks likely they will be more localised, Somerset last year, Cumbria, Lancs and Yorcs this.
Big sponges will be more important for maintaining river levels in the now drier summer months.
You and I are more fortunate at present, we only have to deal with 60cms of rain a year, Cumbria is over 200 isn't it and one month's worth fell in one day??
Even Ian in Cornwall gets 100Cms (I'm having a rethink about the retirement bungalow now).
We've been lulled into a false sense of security with a stable weather for 200years. Even active management like the Thames barrier has been deployed 16 times more than it was designed to.
Yes I think some active systems will be needed along with your dredging, like being able to evacuate water holding capacity quickly, unlike a sponge, to maximise the rivers' capacity between storms.
It's also an indication of the failure of commercially competitive insurance to spread the load by refusing to insure those that have been affected as they can now see their risk. Insurance works to the society's benefit when it is based on random statistics but not when they are allowed to decline specific risks.
We will soon see the same for health insurance when those predisposed to having expensive chronic illness will not be able to avail themselves of private health care.
It shouldn't concern me as I've already had a long healthy life and am unlikely to see the consequences but I do have offspring...
Although spending the Xmas break alone with 6 women is a bit much.