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Coastal health check

SITE INVESTIGATION contractor Andrews Survey has carried out extensive investigations along the east coast of England.

Working for the Environment Agency (Anglian Region), the firm carried out beach profiles and a rolling bathymetric survey at 1km intervals (reducing to 100m in specific areas) to ascertain changes in natural and man-made flood defences.

The project is part of the Agency's programme of coastal monitoring to ensure integrity of flood defences and to support maintenance work and improvements.

By overlaying data from different surveys, the Agency hopes to provide sustainable flood defence solutions.

The coast between the River Humber and River Thames is one of Europe's most threatened coastlines, battered by North Sea storms for several months of the year. It is also one of the most varied, from busy ports to remote sites of special scientific interest, such as sand dunes and mudflats.

Andrews used a variety of methods - including multiterrain amphibious vehicles, landing craft and hovercrafts - to collect data in the tidal zone.

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