The eight new layers cover a variety of physical features and hazards, including a nationwide map of groundwater flooding as well as ground stability data, geological indicators of flooding and permeability data. Widely used by developers, planners and environmental consultants, for example, this new data complements the national datasets already on offer, including high resolution aerial photography, detailed height models and Ordnance Survey mapping.
Five new map products relating to groundwater are also available at www.blueskymapshop.com. These include the first national hazard dataset for groundwater flooding. Based on geological and hydrogeological information, the 1:50,000 scale digital data can be used to identify areas where geological conditions could enable groundwater flooding to occur, and where groundwater may come close to the ground surface. The Geological Indicators of Flooding shows areas vulnerable to both inland and coastal flooding identified from the geological deposits present. Also available is an Aquifer Designation Map identifying different types of aquifers across England and Wales, and reflecting the importance of aquifers in terms of groundwater as a resource, an Infiltration SuDS (Sustainable Drainage Systems) map, Permeability Data and the WellMaster Hydrogeological Database.
The Geological map layers from BGS that are now available through the Bluesky Mapshop include both the 1:10,000 scale and 1:50, scale DigMapGB digital geological maps of Great Britain. These cover five standard themes: Artifical Ground, Bedrock Geology, Linear Features, Mass Movement Deposits and Superficial Deposits, as well as a composition type. Applications of this data ranges from detailed site assessment through to nationwide studies, dependent on scale.