The Collapsible deposits dataset (5km Hex-Grid) version 7 from the British Geological Survey (BGS) provides a generalized assessment of potential ground collapse across Great Britain. It maps susceptibility to rapid subsidence on a hexagonal grid with a 5km side length, rating areas as Low (1), Moderate (2), or Significant (3). The dataset was last updated on 2026-04-09 and is based on the BGS Digital Map (DiGMapGB-50) and expert geological knowledge.
Use Cases
- Prioritize land development zones based on the generalized ground collapse susceptibility rating.
- Inform regional infrastructure planning decisions based on the hexagonal grid hazard overview.
- Identify areas requiring detailed geotechnical investigation based on the 'Significant' rating flags.
- Assess potential property damage risks from ground collapse as indicated in the supporting GeoSure reports.
Strengths
- Provides complete spatial coverage of Great Britain.
- Data is generalized to a user-friendly 5km hexagonal grid format.
- Methodology is based on the authoritative BGS Digital Map (DiGMapGB-50) and expert knowledge.
Limitations
- The summarization process at this scale may lead to under or over-estimation of the actual hazard extent.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count and specific file formats are unknown, which may limit suitability assessment.
Provenance
- Source
- British Geological Survey (BGS)
- Collection Method
- Based on the BGS Digital Map (DiGMapGB-50) and expert knowledge of geological formations.
- Time Range
- null
- Freshness
- Last updated 2026-04-09 08:34:59.549767; freshness should be verified.
- Geography
- Great Britain