Identification

Identifier

NRW_DS121673

Alternative Title

• SCCAN Natural Flood Management: Opportunities for Enhancing Surface Roughness
• Rheolaeth Naturiol o Lifogydd: Cyfleoedd ar gyfer Gwella Garwedd Arwyneb

Metadata Language

English

Lineage

How the map has been created: The national Phase 1 habitat map was used to identify habitats where surface roughness could be enhanced through habitat restoration or where introducing a different type of habitat could enhance surface roughness. The network index, an output from the Scimap (Durham University, 2016) fine sediment risk model expressing how well connected an area of land is to the network of rivers and drainage channels, was used to identify areas where enhanced surface roughness would be disproportionally beneficial. Similarly, Phase 1 habitats have been used to approximate the current roughness of every piece of land. Opportunities were prioritised based on where the existing land cover class typically has low surface roughness, and/or the area was well connected to the wider water environment. Constraints for this map were based on the Phase 1 habitat map, showing where land of existing high value for biodiversity and land of high economic importance exist. Additionally, existing urban areas and areas within 500m of the coastline were excluded from the opportunity space, as measures taken this close to the coast are unlikely to deliver noticeable NFM benefits. This dataset was produced for NRW under contract by Environment Systems Ltd.

Additional Information

Data gaps and limitations: National Phase 1 data is likely out of date in many places. Surface roughness could be derived from more direct measures than habitat scoring Instead of using a coastal buffer, ideally all areas would be masked out that do not have any features downslope of them.

Dataset Reference Date (Publication)

2018-04-01

Extent

Extent

Geographic Extent

Wales (WLS)

N

W

E

S

 

Distribution

Quality

Keywords

Spatial Reference System

Content

Constraints