Collapsible Ground Susceptibility for Great Britain on a 5km Hexagonal Grid

Great Britain is covered by a dataset assessing the potential for geological deposits to collapse and cause rapid subsidence. The British Geological Survey produced this version 8 dataset, generalizing detailed geological data to a hexagonal grid with a 5km side length. It was last updated on 2026-04-09.

Use Cases

• Assess construction site suitability based on the collapsible ground susceptibility rating.
• Inform land-use planning decisions based on the potential for ground movement.
• Identify areas requiring detailed geotechnical surveys based on the 'Significant' hazard rating.
• Model potential subsidence damage to property based on the described geological behavior.

Strengths

• Provides complete coverage of Great Britain.
• Ratings are based on the highest level of susceptibility identified within each hexagonal area.
• Methodology is based on the BGS Digital Map (DiGMapGB-50) and expert knowledge.
• Indicates areas of localised significant rating for focused attention.

Limitations

• Generalization to a 5km hexagonal grid may lead to under or over estimation of hazard extent.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is 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

Version 8, last updated 2026-04-09.

Freshness

Last updated 2026-04-09 08:41:54.814004; freshness should be verified.

Geography

Great Britain.