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Posted: Thursday 26th November 2015

With groundwater flood damage currently costing the UK economy £210 million a year, ESI, a leading independent environmental consultancy, has addressed the issue head-on with the launch of a new 5 metre groundwater flood risk map, offering users more accurate data than ever before.

he latest ESI Groundwater Flood Risk Map is the most sophisticated and accurate map currently available on the market. It uses, for the first time, a five metre dataset to provide detailed groundwater flood risk information on individual properties.

The new data is part of a very active development programme, established in 2013 with the original 50m resolution map, which has been used to screen more than 400,000 UK property transactions in the UK in the last year alone.

Combining comprehensive data on geology, permeability and historic groundwater levels, it is a major improvement on other maps, which are based on older data and indicate potential susceptibility to groundwater emergence rather than specific risk. It also includes flooding from permeable superficial deposits which can have major implications in downstream river valleys and coastal areas. Stuart Pearce, CEO of ESI, explained: “Groundwater flooding is the hidden face of flood risk, and with climate change continuing to impact weather patterns, the result is a greater need for more comprehensive information about ground conditions, groundwater and flood risk.

“Our pioneering new Groundwater Flood Risk Map reflects ESI’s ongoing investment in delivering the best groundwater data available in the market with unequalled accuracy. With more location specific data, users will have far greater confidence in knowing individual conditions than ever before. This means a far more informed choice, with major benefits for the property, infrastructure and insurance industries.

“Enhancing resilience to extreme weather will be an important aspect of future economic competitiveness, and mapping of groundwater flood risk areas provides important preparation support for emergency response, flood mitigation and land-use planning, as well as the assessment of climate change impact,” concluded Stuart.

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