Braid and Main Network Contribution: High Surface Water Flow Areas in Northern Ireland

Northern Ireland's surface water network contribution scores, derived from land cover, rainfall, and terrain data. This geospatial layer identifies areas contributing high surface flow, calculated using a standard deviation threshold from SciMAP application outputs. It is suitable for web map visualization, dashboard analysis, and is available for download.

Use Cases

• Flood risk modeling based on high network contribution area scores.
• Landscape connectivity analysis for surface water using derived flow contribution boundaries.
• Environmental planning and dashboard visualization of hydrological features.
• Integrating land cover and rainfall data for catchment area studies.

Strengths

• Derived from specific, named input sources: CEH Land Cover 2007, Met Office average rainfall, and a 5-meter DTM.
• Clear methodological definition: high contribution boundary set at +1 standard deviation of score distribution.
• Available under the permissive OGL-UK-3.0 license, facilitating reuse.

Limitations

• Core input land cover data is from 2007, which may not reflect current conditions.
• No column names or row counts are provided, limiting understanding of the data's structure.
• Metadata for size, author, and specific update dates is inconsistent or missing across platforms.

Provenance

Source

OpenDataNI

Collection Method

Scores exported from the SciMAP application within SAGA GIS, based on processed inputs from CEH, Met Office, and DTM data.

Time Range

Primary land cover input is from 2007.

Freshness

Last updated date provided as 2026-07-08 on one platform, but this appears to be a future date, suggesting potential metadata error. Other platforms list no update date.

Geography

Northern Ireland, United Kingdom.