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Planning guidance and evidence

Drainage, Flood Risk and Sustainable Drainage Systems

How water is managed as part of a proposed development is an important planning consideration, in particular in Somerset due to large areas being especially sensitive to flood events. On the lower ground in and around the Somerset Levels or on steeper, rapid rise catchment areas, it is important that the planning process is able to fully consider flood and water management implications of a development proposal.

The National Planning Policy Framework requires flood risk to be taken into account at all stages of the planning process. All types of flooding and their impact on the natural and built environment need to be considered.  Certain developments will need to include appropriate measures to ensure it is not susceptible to flooding and that flood risk is not increased elsewhere.

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