Derg And Mourne Network Contribution: High Surface Water Flow Areas

Network contribution area scores identify regions with high potential for surface water flow into river networks in Northern Ireland. The scores were calculated using the SciMAP application within SAGA GIS, based on 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 one standard deviation from the mean.

Use Cases

• Identifying high-priority areas for surface water runoff management based on land cover, rainfall, and terrain.
• Visualizing potential surface flow connectivity for river network analysis in web maps or dashboards.
• Supporting catchment-scale hydrological modeling by providing pre-processed contribution scores.
• Informing land-use planning decisions by highlighting zones with high hydrological contribution.

Strengths

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

Limitations

• Specific column names and data structure are not documented in the provided metadata.
• The core input land cover data is from 2007, which may not reflect current conditions.
• The exact spatial resolution and extent of the dataset are not specified.

Provenance

Source

OpenDataNI

Collection Method

Calculated using the SciMAP application within SAGA GIS, based on CEH Land Cover 2007, Met Office average rainfall, and a 5-meter DTM.

Time Range

Primarily reflects conditions circa 2007 (land cover data).

Freshness

Last updated on 2026-05-06 according to uk_data platform, though this appears to be a future date which may be a metadata error.

Geography

Northern Ireland, specifically the Derg and Mourne catchments.