dataset · Wales
Flood Map for Planning (FMfP) TAN15 Defended Zones
The Flood Map for Planning (FMfP) includes climate change information to show how this will affect flood risk extents for rivers, the sea and surface water and small watercourses over the next century. It shows the potential extent of flooding assuming no defences are in place. It also indicates areas at risk from coastal erosion, areas that have flooded in the past and key information on the location of flood defence infrastructure. The FMfP can be considered as the best available information o
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Licence: ["There are no access restrictions on this data. NRW may release, publish or disseminate it freely.", "\u00a9 CNC/NRW and UKCEH. Data may be re-used under the terms of the Open Government Licence prov
Evidence quality: 59.1
Listed in data.gov.uk public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered docs-verified
- flood extent for rivers, sea, surface water and small watercourses, assuming no defences · TAN15 Defended Zone layer · coastal erosion risk areas · historic flood extents · flood defence infrastructure locations
- Coverage docs-verified
- Wales (bounding box lat 51.240829 to 53.513067, lon -5.777741 to -2.608865) · climate change projections over the next century; dataset reference date 2026-05-21
- Update frequency docs-verified
- biannually
- Formats docs-verified
- WMS (Web Mapping Service)
- Access docs-verified
- Free and open; no access restrictions (NRW may release, publish or disseminate freely); Open Government Licence v3.0 per entry licence
Useful for
- Use cases llm-inferred
- Planning-stage flood risk screening of Welsh development sites · Checking whether a site lies within a TAN15 Defended Zone before FCA scoping · Coastal erosion and historic flood extent screening in site appraisals
- Audience llm-inferred
- flood consultants · planners · hydrologists · drainage engineers · GIS analysts
Limitations
- Constraints docs-verified
- Not an official planning map: no official status for planning purposes yet · Coming into force of the new TAN 15 and the Flood Map for Planning is suspended pending further TAN consultation · Extent shows flooding assuming no defences are in place
Evidence
- https://datamap.gov.wales/capabilities/layer/2065/?ows_service=wms
- https://www.data.gov.uk/dataset/8185d675-600c-42a2-bba5-1c77fd913b2f/flood-map-for-planning-fmfp-tan15-defended-zones2
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.