BGS GeoSure debris flow

BGS GeoSure debris flow landslides sample. Contains Ordnance Survey data © Crown Copyright and database rights. 2017.

BGS GeoSure debris flow landslide coverage

Scale 1:50 000
Coverage Great Britain
Format GIS grid data (ESRI and ASCII grid; others available by request).
Price Data now available for evaluation/beta testing.

The Debris Flow landslide layer provides information on the potential of the ground, at a given location, to form a debris flow. It is based on a combination of digital geological, hydrogeological and topographic data. The methodology develops an additional dimension to the BGS GeoSure landslides layer and is designed for users interested specifically in debris flow susceptibility.

The term debris flow refers to the rapid, downslope flow of poorly sorted debris mixed with water. They are a widespread phenomenon in mountainous terrain and are distinct from other types of landslides as they can occur periodically on established paths, usually gullies and first- or second-order drainage channels. Debris flows in Great Britain are most commonly found in upland Scotland but also occur in parts of Wales and the Lake District. How are landslides classified?

Debris flows are potentially very destructive and, due to the speed at which they take place, can for example rapidly block infrastructure routes such as the Rest and Be Thankful Pass and Glen Ogle.

The BGS GeoSure debris flow landslides layer is part of the BGS GeoSure range of natural subsidence products.

Hutton field: well correlation diagram.