Quoile Network Contribution: High Surface Water Flow Zones

Quoile Network Contribution data contains geospatial scores identifying areas of high hydrological contribution to 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 boundary is defined as areas scoring above +1 standard deviation from the mean of the distribution.

Use Cases

• Identifying high-priority zones for surface water runoff management based on land cover, rainfall, and terrain scores.
• Visualizing potential high-contribution areas for flood risk dashboards using the provided geospatial layer.
• Integrating standardized contribution scores into larger hydrological models for the Northern Ireland river network.

Strengths

• Derived from authoritative input sources: CEH Land Cover 2007, Met Office rainfall data, and a 5-meter DTM.
• Methodology is explicitly documented: scores calculated via SciMAP in SAGA GIS, with high-contribution boundary defined statistically (+1 standard deviation).
• Available in multiple geospatial formats (e.g., SHP, GeoJSON, GPKG) supporting diverse analysis workflows.

Limitations

• Specific column names and data schema are unknown, limiting immediate analytical use.
• Core input data (Land Cover 2007) is dated, which may reduce relevance for contemporary hydrological analysis.
• Dataset size, row count, and spatial resolution are not provided.

Provenance

Source

Government Digital Service (UK), derived from CEH and Met Office data.

Collection Method

Processed and scored using the SciMAP application within SAGA GIS.

Time Range

Input data representative of circa 2007.

Freshness

Last updated metadata indicates 2026-05-06, but the underlying input data (Land Cover 2007) is from 2007.

Geography

Northern Ireland, United Kingdom.