dataset · Wales

Communities at Risk Register 2025 – Present Day (CaRR)

The Communities at Risk Register (CaRR) has been developed to provide an objective means of identifying risk and prioritising flood risk management activities at a Wales-wide, community level. It applies a standard methodology across all flood sources to calculate a theoretical ‘danger score’ that allows comparative risks to be quantified and ranked (from High to Low). The CaRR comprises a spreadsheet that identifies and ranks individual communities for, 1. a natural, ‘undefended’ scenario, and

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Source details

Licence: ["There are no access restrictions on this data. NRW may release, publish or disseminate it freely.", "\u00a9 CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number

Evidence quality: 47.4

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 danger score per community (theoretical, ranked High to Low) · community rankings · undefended (natural) scenario ranking · managed scenario ranking (defences and flood warning) · community polygon GIS layer with danger scores and rankings
Coverage docs-verified: Wales
Resolution docs-verified: Community level (individual community polygons)
Update frequency docs-verified: As needed (no fixed schedule)
Formats docs-verified: spreadsheet (file format not stated) · WMS (Web Mapping Service) · GIS layer (view and download service)
Access docs-verified: Free and open: no access restrictions; NRW may release, publish or disseminate freely. Entry licence text also reserves NRW/CNC rights and cites OS data, so confirm reuse terms before redistribution.

Useful for

Use cases llm-inferred: Wales-wide community flood risk screening to shortlist areas for FRM or FRA context · Ranking communities by danger score to prioritise survey or appraisal effort · Comparing undefended and managed scenario rankings for defence or flood warning options · Attributing a GIS community layer with danger scores for flood risk mapping and reporting
Audience llm-inferred: flood consultants · hydrologists · GIS analysts · planners · drainage engineers

Limitations

Constraints llm-inferred: Danger scores are theoretical, not measured or modelled event outcomes · Coverage is Wales only · Updates are as needed, so currency is not guaranteed · Spreadsheet file format is not specified in the docs · Licence statements conflict between entry metadata (NRW/CNC rights reserved, OS data) and the portal (licence not set) · Time span of the underlying data is not stated

Evidence

Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.