dataset · Wales

Aquifer Designation Dataset for Wales version 2

This dataset classifies bedrock and superficial geologic units according to their aquifer designation - Principal Aquifers, Secondary Aquifers (Secondary A, Secondary B, and Secondary undifferentiated), and Unproductive Strata. The Environment Agency (EA) and Natural Resources Wales (NRW) help to protect groundwater by identifying different types of aquifers ‐ underground layers of water‐bearing, permeable rock or drift deposits from which groundwater can be extracted. The groundwater protection

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Source details

Licence: ["The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in an

Evidence quality: 37.6

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: bedrock aquifer designation · superficial deposit aquifer designation · Principal Aquifer · Secondary A · Secondary B · Secondary undifferentiated · Unproductive Strata
Coverage docs-verified: Wales
Resolution llm-inferred: ~1:50,000 source mapping scale (BGS Geology 50k, DiGMapGB-50); no explicit spatial resolution stated
Update frequency docs-verified: As needed (no fixed schedule); last updated 2 October 2026
Access docs-verified: No auth stated; reuse restricted by BGS/NERC copyright (no reproduction without the copyright holder's permission); no licence set on the page

Useful for

Use cases llm-inferred: Screen Welsh sites for Principal vs Secondary aquifer designation as groundwater context in flood risk assessments · Support SuDS infiltration and drainage strategy groundwater vulnerability screening in Wales · Classify bedrock and superficial units in a desk study to plan ground investigation for geotechnical design
Audience llm-inferred: flood consultants · hydrologists · drainage engineers · geotechnical engineers · GIS analysts

Limitations

Constraints docs-verified: Wales only · Dataset reference date is 2016 (creation) · Derived from BGS Geology 50k mapping · No warranty on quality or accuracy; use is at the customer's own risk · Copyright restrictions on reproduction

Evidence

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