TISOLS 2020: Postponed

Gouda, The Netherlands • 20 Apr 2020 - 24 Apr 2020

Land subsidence, or land-level lowering, is a major problem that threatens the viability and sustainable economic development for millions of people throughout the world, especially in (but not restricted to) highly urbanized coastal areas. It is often a result of overexploitation of groundwater resources. The total costs globally amount up to many billions of dollars annually.

TISOLS2020 is postponed due to the coronavirus outbreak. We will keep you informed.

For more information

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New innovative technologies and approaches are needed to reduce or, in the best case, to stop land subsidence. TISOLS2020 intends to bring together 300+ international experts to share the latest research and insights on natural and anthropogenic land-level lowering.

At TISOLS2020 in the Netherlands, we provide a platform to share our understanding of land subsidence, reliable data, and innovative techniques. Ultimately, we aim to increase the acknowledgement of the land subsidence problem in order to devise targeted strategies and solutions for long-term sustainable living conditions in subsiding areas. This means that at TISOLS we take on the challenge that lies in linking hydrological, geotechnical and geological knowledge to policy and socially acceptable solutions.


TISOLS will consist of a poster and oral programme, including high-level key note contributions. One day of the programme will have a broad scope: this day we will open the doors of TISOLS to Dutch professionals, decision makers and policymakers. We anticipate a lively interaction between the international science community and the local Dutch land subsidence community, leading to exchange of best practices and lessons learned


TISOLS is organized under the auspices of the Unesco IHP Land Subsidence International Initiative. This working group has endeavored to improve and disseminate knowledge on land subsidence since the 1970s, through International Symposia on Land Subsidence, collaborative projects and publications.

This tenth edition in The Netherlands is organized by Utrecht University, TU Delft, Wageningen University & Research, Geological Survey of the Netherlands – part of TNO and Deltares.

Subsidence research at TNO

Many activities in the subsurface require subsidence estimates. It is no coincidence that this is a key objective of the Geological Survey of the Netherlands. The combination is our strength: knowledge and data; deep and shallow; measuring, understanding and predicting. We make clear where and how much the ground is subsiding, so that policy can be adjusted accordingly. If you like to know more, please feel free to contact us.

More: Bodemdaling is een sluipend probleem & Subsidence in the Netherlands


Dr. Peter Fokker

  • geomechanics
  • reservoir engineering
  • data assimilation
  • subsidence
  • induced seismicity


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