Holding Back The Water

Flanders Moss NNR

Water is critical for a bog. All of the water that wets a bog comes from rain. After all, they are domes of peat and water doesn’t flow up hill. Once the water is on the bog our aim is to keep it as long as possible before letting it drain off the moss. This is why we are damming ditches, building wood chip dams and various other ways of impeding water flow.


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And the digger is back again. At Wards of Goodie on the north edge of the moss we are creating a barrier along the edge of the peat mass. This bund is a raised ridge constructed of compressed peat and clay that slows but doesn’t stop the flow of water off the moss. By holding back the water here it backs the water up into the moss so raising the water table and keeping the bog wetter.

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The finished bund, just waiting for the water to fill it up.

But this is about more than just improving the bog habitat. The wet, marshy area next to the bund is also great habitat for wetland birds and dragonflies. And there is more. By holding on to the water for longer the bog helps in natural flood management. When there is a lot of rainfall the bog releases the water more slowly so reducing the big woosh of flood water that gets into the Goodie water. This sort of work is just the right sort of thing in so many ways.

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And this is one we prepared earlier. A stretch of bund built last year, holding back large amounts of water and creating valuable wetland habitat.

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