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'Natural' engineering offers solution against future flooding
Date:1/28/2014

trong>Strategies for Natural Flood Management (NFM)

Natural Flood Management aims to reduce the downstream maximum water height of a flood the peak or delay the arrival of the flood peak downstream, increasing the time available to prepare.

This is done by restricting the progress of water through a catchment and relies on one, or a combination of four key mechanisms which work with the environment to provide a sustainable solution to the problem:

  • Storing water such as ponds, ditches and field attenuation bunds

  • Increasing soil infiltration through the creation of 'infiltration zones' to help water get into the soil at certain locations, for example tree belts.

  • Slowing water by increasing resistance to its flow, for example planting in the floodplain or riverside woodland

  • Redirecting the water by channelling it away from the main flow into temporary water storage areas or buffer zones to hold the water back until the flood peak drops or restoring river meanders. This increases the length of the river and decreases its slope, slowing down the flow

Costing around 200,000, the Belford scheme was installed after a study of the area suggested the cost of a full conventional flood defence scheme for the town would cost in the region of 2.5 m

"The situation in Belford is typical of many rural towns around the UK that are at risk of flooding," explains Dr Paul Quinn, based in the School of Civil Engineering and Geosciences at Newcastle University.

"It is a town with a long history of flooding but the floods tend to be short-lived albeit severe and only tend to affect a small number of properties. A feasibility study concluded that traditional flood defences were not suitable because of the high-cost, lack of space for flood walls and banks and the relatively small number of properties involved."

Just five months after the feasibility report was pub
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Contact: Louella Houldcroft
Louella.houldcroft@ncl.ac.uk
44-019-120-85108
Newcastle University
Source:Eurekalert

Page: 1 2 3

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