Surface Water Management Catchments for Water Framework Directive Cycle 3

United Kingdom polygon data delineating Surface Water Management Catchments, the geographic units for Water Framework Directive action plans. The dataset was created by the Environment Agency using hydrological models based on LiDAR and river network data. It applies specifically to Cycle 3 of the WFD.

Use Cases

• Analyze the spatial boundaries of Management Catchments to plan coordinated water body interventions.
• Use the polygon features to assess which water bodies fall within a specific Management Catchment for regulatory reporting.
• Integrate the catchment geometry with other environmental datasets to model pollutant runoff or habitat connectivity.

Strengths

• Data is derived from authoritative sources including EA LiDAR and the Detailed River Network.
• Catchment boundaries are designed to ensure WFD rivers do not intersect boundaries, supporting spatial analysis integrity.

Limitations

• The shapefile format has acknowledged limitations which may affect data interoperability.
• The dataset's creation involved expert judgement, introducing a potential for subjective boundary delineation.

Provenance

Source

Environment Agency

Collection Method

Delineated using WFD River Water Body Catchments as building blocks, aggregated within a GIS using hydrological models based on LiDAR and a digital terrain model.

Time Range

Cycle 3 of the Water Framework Directive.

Freshness

Data applies to Cycle 3 of the WFD and was last updated in April 2026.

Geography

United Kingdom