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Unesco Land Subsidence WG Annual Meeting in Deltares, The Netherlands 2014.

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Subsidence experts visiting the Netherlands. Deltares hosted 15 international subsidence experts to discuss subsidence problems worldwide at the annual meeting of UNESCO Land Subsidence working group. Gilles Erkens, subsidence expert Deltares showed the impact of subsidence in the Netherlands during a field trip.

Land subsidence is causing more and more damage every year. It scarcely registers on the radar of many countries. Even so, the impact on coastal cities and peat areas is increasingly apparent. Levels of flood damage are rising and the risk of casualties is following. Land subsidence can also lead to major economic losses such as structural damage and high maintenance costs for roads, railways, dikes, pipelines and buildings. The total bill worldwide mounts up to many billions of dollars annually. It can only rise further in the future with population growth and the intensification of economic activities in delta areas.