Flood Control: Dredging
The question
To ask the Secretary of State for Environment, Food and Rural Affairs, whether his Department has made an assessment of the potential impact of dredging on flood mitigation.
Answered by Emma Hardy
Dredging and clearing channels are an important option for watercourse maintenance, where it is technically and cost effective, does not significantly increase flood risk for others downstream, and does not damage the environment and wildlife. Its effectiveness varies substantially for each stretch of watercourse, it is unlikely to be effective in isolation and is usually part of a wider approach. In many cases the silt will quickly build up again.
Where watercourse maintenance is the responsibility of the Environment Agency it focuses its efforts on those activities which will achieve the greatest benefit in terms of protecting people and property from flooding. This includes dredging, which the Environment Agency will undertake an assessment of, working in close consultation with local communities.
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