TISOLS: 10th International Symposium on Land Subsidence

The 10th International Symposium on Land Subsidence, TISOLS will take place in Delft–Gouda, the Netherlands from 17 – 21 April 2023. TISOLS intends to bring together  international experts to share the latest research and insights on natural and anthropogenic land-level lowering.

Land subsidence 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.

The symposium is organised under the auspices of the Unesco IHP Land Subsidence International Initiative. This group has endeavoured to improve and disseminate knowledge on land subsidence since the 1970s, through International Symposia on Land Subsidence, collaborative projects and publications. Deltares is part of the organising committee and scientific committee.


TISOLS2023 will be held from 17 – 21 April 2023 at the Aula of the Delft University of Technology in Delft in combination with a Subsidence Day in the historical city of Gouda. Both cities are also located in the heart of the subsiding Dutch coastal plain. Subsidence has made the Netherlands to what it is today; a water-rich country which is one third below sea level. The Netherlands are still subsiding, causing damage to infrastructure and buildings. On top of that, land subsidence is worrisome for an already low-lying country that has to cope with sea-level rise.

More information

More information on e.g. call for abstracts, programme, registration can be found on the TISOLS website.