Planting trees in the uplands that drain into rivers could slow down the transfer of water into rivers and thus reduce flood risk. Much of the UK (over 90%) used to be forested, and this has a far greater sponge like capacity to absorb water and then release it more slowly. By studying sedimentary records of how rivers have changed over the last 10 000 years, we can see evidence of flooding being reduced when forest levels were much higher. (BBC 13th November 2007)
Yet Defra who have some responsibility for subsidising conservation grazing in the uplands, thus preventing trees from growing, are currently short of funds due to the floods of the last year! Time for some joined up thinking!
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