Map highlights groundwater flood risk
A groundwater flood risk map of the UK is being made widely available for the first time. Created by JBA Consulting and available online from aerial mapping company Bluesky, the map is designed to help home owners, developers and risk management authorities understand the threat of groundwater flooding.
The new colour-coded hazard map complements other flood maps and geographic datasets already available from the Bluesky Mapshop.
Groundwater flooding occurs when the groundwater table in permeable rock types rises to enter basements and cellars or presents as excess water emerging at the ground surface. Often overlooked or confused with other causes of flooding, it can pose considerable economic and social threat.
As groundwater levels are generally highest following prolonged periods of rainfall, groundwater flooding is a growing threat as the UK is expected to experience considerably higher amounts of rainfall because of climate change.
“Groundwater flooding tends to be more persistent than surface water flooding and can result in significant damage to property,” said Rachel Tidmarsh, managing director of aerial mapping company Bluesky. “As weather events become more severe bringing longer periods of heavy rainfall, so, therefore, does the threat of groundwater flooding.”
The new Groundwater Flood Map was created by JBA Consulting and provides comprehensive coverage of all aquifers in England, Wales and Scotland. Created using a range of data, including known locations of past groundwater flooding events, rainfall measurements and aquifer properties, the new map provides classification of hazards on a 5m grid using a simple traffic-light system. A three-tiered methodology, used to create the map, allows for quick and efficient updates and refining of the map for local areas of interest.
“These maps will support flood risk management activities at a national or local scale, and will assist risk management authorities in meeting their responsibilities under the Flood and Water Management Act,” said Dr Maxine Zaidman, technical director for hydrology and hydrometry at JBA Consulting.
- SEPA launches five-year plan to deliver flood warning service The Scottish Environment Protection Agency (SEPA) has launched its Flood Warning Development Framework for 2017-2021 which... Read More >
- HR Wallingford becomes part of EA WEM framework The Environment Agency (EA) has selected HR Wallingford to be part of its Water and Environment Management (WEM)... Read More >
- Costain and Vinci JV to build £82M tunnel for Scottish Water A joint venture between Vinci Construction Grands Projets and Costain has won an £82M contract to build the Shieldhall... Read More >
- Private drains and sewers transfer - six years on October 2011 marked a major change in the way sewers and drains running from private properties into the public sewer... Read More >
- Clear and consistent guidance for drainage design New guidance for the design of drains and sewers should provide the opportunity for installers to meet consistent... Read More >
- Interview: Lawrence Gosden, MD, Wastewater, Thames Water This month we talk to Lawrence Gosden, MD for wastewater at Thames Water, about building flood resilience in London and... Read More >
- Getting to Grips with… highway pollution Pollution from urban highways, trunk roads and motorways poses significant risks to the environment from toxic metals and... Read More >
- Rainwater spin-out companies offer innovative path Researchers from the University of Exeter's Centre for Water Systems are putting the latest rainwater harvesting and SuDS... Read More >