Lagan Network Contribution: High Surface Water Flow Zones

Northern Ireland's Lagan River basin is the focus of this geospatial dataset, which identifies areas with high contributions to surface water flow. The data layer contains network contribution area scores derived from SAGA GIS analysis using inputs from CEH Land Cover 2007, Met Office average rainfall, and a 5-meter Digital Terrain Model. The 'High contribution' category is defined as areas scoring above +1 standard deviation from the mean of these calculated scores.

Use Cases

• Flood risk modeling based on high surface water contribution zones.
• Catchment area management planning using integrated land cover and rainfall data.
• Web map visualization of hydrological connectivity for public dashboards.
• Environmental impact assessment referencing standardized contribution scores.

Strengths

• Derived from established, authoritative sources: CEH Land Cover 2007, Met Office rainfall data, and a 5m DTM.
• Cross-platform presence on UK and EU open data portals indicates official recognition and reuse potential.
• Methodology is explicitly described: scores calculated in SAGA GIS's SciMAP application with a defined statistical threshold (+1 SD).

Limitations

• Core input land cover data is from 2007, which may not reflect current conditions.
• Column names and data schema are not provided in any source, limiting immediate analytical understanding.
• Dataset size, row count, and specific author information are unavailable across all platforms.

Provenance

Source

Government Digital Service (UK), outputs from SciMAP application within SAGA GIS.

Collection Method

Geospatial analysis combining land cover, rainfall, and topographic data to calculate network contribution scores.

Time Range

Primary input data (CEH Land Cover) is from 2007; analysis date is unspecified.

Freshness

2026-04-15 14:20:17.940757

Geography

Lagan River network, Northern Ireland, United Kingdom.