Surface Water Flood Maps: Extent, Depth, and Velocity for Scotland

Scottish surface water flood hazard maps show flood extent, depth, and velocity for three probability scenarios. The data includes a high-probability event reflective of recent decades, a medium-probability 200-year return period, and a low-probability scenario incorporating UKCP09 high emissions climate projections for the 2080s. The maps were produced by the Government Digital Service.

Use Cases

• Assess flood risk for land-use planning based on the defined high, medium, and low probability flood extents.
• Model potential flood damage based on the provided flood depth and velocity data.
• Evaluate long-term climate change impacts on flood hazards based on the UKCP09 2080s high emissions scenario.
• Compare observed flood events with modeled scenarios based on the high-probability map reflective of recent decades.

Strengths

• Maps include three distinct probability scenarios (high, medium, low) for comparative analysis.
• Hazard layers likely contain multiple data types, including flood extent, depth, and velocity.
• Climate change scenario is defined using a specific, cited projection (UKCP09 high emissions 95%ile for the 2080s).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Government Digital Service

Collection Method

Hazard mapping based on hydrological modeling and climate projections.

Time Range

Climate change scenario projects to the 2080s; high probability map reflects recent decades.

Freshness

Last updated date is unknown.

Geography

Scotland (inferred from reference to Scottish Planning Policy).