National Flood Risk Maps

Natural Resources Wales

National Flood Risk Maps

The National Flood Risk Maps are based on generalised modelling created as part of Flood Risk Assessment Wales (FRAW) and published as part of Cycle 2 of the Flood Risk Regulations (2009).

The National Flood Risk Maps have been created for 3 sources of flooding, namely,

  1. Flooding from Rivers
  2. Flooding from the Sea
  3. Flooding from Surface Water & Small Watercourse

The maps show Risk to a range of receptors, grouped in categories of People, Economic and Environment. Risk information is aggregated and displayed at a community scale.

For Rivers and Surface Water & Small Watercourses, High risk is up to 1 in 30year; Medium risk is between 1 in 30 and 1 in 100year; and Low risk is between 1 in 100year and 1 in 1,000year Annual Exceedance Probability (AEP).

For the Sea, High risk is up to 1 in 30 year; Medium risk is between 1 in 30 to 1 in 200 year; and Low risk 1 in 200 year to 1 in 1000 year.

Acknowledgments

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, the Environment Agency © EA and Getmapping Plc and Bluesky International Limited [2015]. Defra, Met Office and DARD Rivers Agency © Crown copyright. © Cranfield University. © James Hutton Institute. Contains OS data © Crown copyright and database right. Land & Property Services © Crown copyright and database right.


Currency
19 July 2020


Description Type Endpoint
NRW National Flood Risk (Communities At Risk Register) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_CARR)
NRW National Flood Risk (Communities At Risk Register) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_CARR)
NRW National Flood Risk (Rivers: Economic) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_RIVER_ECONOMIC)
NRW National Flood Risk (Rivers: Economic) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_RIVER_ECONOMIC)
NRW National Flood Risk (Rivers: Environment) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_RIVER_ENVIRO)
NRW National Flood Risk (Rivers: Environment) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_RIVER_ENVIRO)
NRW National Flood Risk (Rivers: People) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_RIVER_PEOPLE)
NRW National Flood Risk (Rivers: People) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_RIVER_PEOPLE)
NRW National Flood Risk (Sea: Economic) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SEA_ECONOMIC)
NRW National Flood Risk (Sea: Economic) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SEA_ECONOMIC)
NRW National Flood Risk (Sea: Environment) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SEA_ENVIRO)
NRW National Flood Risk (Sea: Environment) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SEA_ENVIRO)
NRW National Flood Risk (Sea: People) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SEA_PEOPLE)
NRW National Flood Risk (Sea: People) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SEA_PEOPLE)
NRW National Flood Risk (Surface Water and Small Watercourses: Economic) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SURFACE_WATER_ECON)
NRW National Flood Risk (Surface Water and Small Watercourses: Economic) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SURFACE_WATER_ECON)
NRW National Flood Risk (Surface Water and Small Watercourses: Environment) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SURFACE_WATER_ENVIRO)
NRW National Flood Risk (Surface Water and Small Watercourses: Environment) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SURFACE_WATER_ENVIRO)
NRW National Flood Risk (Surface Water and Small Watercourses: People) WMS http://lle.gov.wales/services/wms/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SURFACE_WATER_PEOPLE)
NRW National Flood Risk (Surface Water and Small Watercourses: People) WFS http://lle.gov.wales/services/wfs/nrw (inspire-nrw:NRW_NATIONAL_FLOOD_RISK_SURFACE_WATER_PEOPLE)

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Description Format Download Link
Vector data Shapefile https://naturalresourceswales.sharefile.eu/d-s4c380e35e854325b