Flood Map for Planning Flood Zones 2 and 3

Natural Resources Wales

The Flood Map for Planning (FMfP) supports Welsh Government planning policy on flood risk and is the starting point for consideration of flood risk in the planning system. It provides an indication to which land is at risk of flooding from rivers, the sea and surface water and small watercourses, taking account the impacts of climate change over the next 100 years. The FMfP is the key dataset to inform and guide decision making about future development.

The Flood Zones within the FMfP shows the undefended risk of flooding from Rivers, the Sea and from Surface Water & Small Watercourses.

Flood Zone 3 displays the extent of flooding from:

  • rivers with a 1% (1 in 100) chance or greater of happening in any given year, including an allowance for climate change.
  •  the sea with a 0.5% (1 in 200) chance or greater of happening in any given year, including an allowance for climate change.
  • Surface water & small watercourses with a 1% (1 in 100) chance or greater of happening in any given year, including an allowance for climate change.

 Flood Zone 2 displays the extent of flooding from:

  • Rivers with less than 1% (1 in 100) but greater than or equal to 0.1% (1 in 1,000) chance of happening in any given year, including an allowance for climate change.
  • the Sea with less than 0.5% (1 in 200) but greater than or equal to 0.1% (1 in 1,000) chance of flooding in any given year, including an allowance for climate change.
  • Surface water & small watercourses with less than 1% (1 in 100) but greater than or equal to 0.1% (1 in 1,000) chance of happening in any given year, including an allowance for climate change.

The FMfP is displayed in two parts, a Basic View and a Detailed View. In the Basic View the risk of flooding from Rivers and the Sea is shown as a merged layer. In the Detailed View flood risk is separated into individual sources. In both Views Flood Zones for Surface Water & Small Watercourses are shown separately

Attribution Statement

Contains Natural Resources Wales information © Natural Resources Wales and database right. All rights reserved. Some features of this information are based on digital spatial data licensed from the UK Centre for Ecology & Hydrology © UKCEH. Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right.


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Flooding Spatial data

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Flood Map for Planning Flood Zones 2 and 3 Various / Other https://naturalresourceswales.sharefile.eu/d-sd7639d92fdcb4a7f9b1d098ab1007cf4