Lower Bann Network Contribution: Hydrological Risk Areas

Network contribution area scores identify regions with a high potential for surface water flow into the river network in Northern Ireland. The scores were calculated within SAGA GIS using inputs from the CEH Land Cover 2007 map, Met Office average rainfall data, and a 5-meter Digital Terrain Model. The 'High contribution' category is defined as areas scoring above one standard deviation from the mean, highlighting zones of significant hydrological connectivity.

Use Cases

• Flood risk assessment based on modeled surface water connectivity scores.
• Catchment management planning using integrated land cover and rainfall data.
• Visualizing high-contribution zones for environmental dashboards and web maps.
• Prioritizing land-use interventions in areas identified as high network contributors.

Strengths

• Derived from authoritative sources: CEH Land Cover 2007, Met Office rainfall, and a 5m DTM.
• Available under the permissive OGL-UK-3.0 license for reuse.
• Cross-platform presence on UK and EU open data portals indicates established utility.

Limitations

• Specific column names and data structure are not documented in the provided metadata.
• The dataset is based on land cover data from 2007, which may not reflect current conditions.
• Conflicting last update dates are reported (2026-07-08 and 2026-06-18), casting doubt on version control.

Provenance

Source

OpenDataNI

Collection Method

Exported from SciMAP application outputs within SAGA GIS.

Time Range

Based on CEH Land Cover 2007; analysis period is not specified.

Freshness

2026-07-08 13:33:24.240834

Geography

Northern Ireland, United Kingdom.