River Flood Maps: UK Flood Extent, Depth, and Velocity for Multiple Return Periods

River hazard maps for the United Kingdom showing flood extent, depth, and velocity where appropriate. The data includes three probability scenarios: a high-probability 10-year return period, a medium-probability 200-year return period, and a low-probability 1000-year return period plus a 200-year return period with a UKCP09 high emissions climate change scenario for the 2080s. The dataset was produced by the Government Digital Service.

Use Cases

• Assess flood risk for property and infrastructure planning based on flood extent and depth maps.
• Model potential flood damage and insurance liabilities based on flood depth and velocity data.
• Analyze the impact of future climate change on flood frequency and severity based on the UKCP09 2080s high emissions scenario.
• Inform land-use planning and policy development based on the return periods aligned with Scottish Planning Policy.

Strengths

• Includes three distinct probability scenarios (10-year, 200-year, 1000-year) for comparative risk analysis.
• Integrates a specific future climate change scenario (UKCP09 high emissions 95%ile for the 2080s).
• Contains multiple hazard layers, including flood extent, depth, and velocity where appropriate.

Limitations

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

Provenance

Source

Government Digital Service

Collection Method

Modeling based on UKCP09 climate projections and hydrological data.

Time Range

Climate change scenario is projected for the 2080s.

Freshness

Last updated date is unknown.

Geography

United Kingdom