Surface Water Flood Maps for the UK with Climate Change Projections

UK surface water flood hazard maps showing flood extent, depth, and velocity for three probability scenarios. The data includes a high-probability 10-year return period, a medium 200-year return period, and a low probability incorporating UKCP09 high emissions climate projections for the 2080s. The dataset was produced by the Government Digital Service, aligning with Scottish Planning Policy return periods.

Use Cases

• Urban flood risk assessment based on mapped flood extent and depth.
• Infrastructure planning and resilience modeling based on flood velocity data where available.
• Climate change impact studies for the 2080s based on the UKCP09 high emissions scenario.
• Land-use and policy development informed by the 10-year and 200-year return period flood probabilities.

Strengths

• Includes three distinct probability scenarios: high (10-year), medium (200-year), and low (200-year plus climate change).
• Maps multiple hazard characteristics: flood extent, depth, and velocity where appropriate.
• Climate change projections are defined by the specific UKCP09 high emissions 95th percentile predictions for the 2080s.

Limitations

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

Provenance

Source

Government Digital Service

Collection Method

Hazard mapping and climate modeling.

Time Range

Climate projections are for the 2080s.

Freshness

Last updated date is unknown.

Geography

United Kingdom