If we are able to answer one question, it will give us the key to what I believe are the long-term practical solutions to the problems of Somerset and elsewhere. Why did the Somerset levels flood and the Gwent levels not flood?
Having represented part of the Gwent levels continuously as an elected person since 1972, I know them well, and members of my family live in Somerset. The areas are almost identical. They share 2,000 years of history, and their topographies and geographies are identical. The Gwent levels were drained by the Romans, and the sea wall was built by the 20th Augustan legion 2,000 years ago. During that long period, the levels have been treated very much the same. Drainage has been put into both. They have recently shared exactly the same weather—they are only a short distance apart—and exactly the same tides. There is no dredging on either side. So why on earth was there flooding on one side of the Severn estuary and not on the other? I believe that the answer lies in farming techniques.
As has been said, dredging is not a panacea. In 1928 there was a flood here, on this spot. The terraced houses opposite, in Page street and Millbank, were flooded, and people died. That flood was caused by dredging, which was carried out in the lower reaches of the Thames to increase access for ships. Yes, water did flow out more quickly as a result, but it also flowed in more quickly. It was easy for the tide to come in. In the dredged areas, the tide came in and met the water coming down from the hills. If dredging is seen as the answer in Somerset and is proceeded with, the lower reaches of the Parrett will be exposed to the extraordinary characteristics of the Severn, which holds more sediment in suspension than almost any other river in the country.