Subsidence and Society Day

The last day of TISOLS2023 is dedicated to the interaction between science and policy. Land subsidence is a global problem. We need scientists, policy makers, decision makers and other experts to team up and come with approaches strategies and solutions. The aim is to exchange Dutch and international experiences and best practices to learn from each other.

When: Friday 21 April 2023
Where: St. Jan Church, Gouda
Who: (inter)national scientists, experts, decision makers and policy makers
Costs: 100 euro including lunch and land subsidence excursion, the fee is included in the TISOLS2023 full programme fee.

Programme Subsidence and Society Day

08:45   Registration, coffee & tea, exhibition booths

09:30   Welcome by Yvonne Smit (chair of the day) and Gilles Erkens (chair local organizing committee TISOLS)


09:45   Land subsidence in Gouda and the Netherlands - political point of view

  • Michel Klijmij – van der Laan (alderman municipality of Gouda and chair of Platform Slappe Bodem)
  • René Vrugt (Director of the Soils, Spatial Planning and Climate Adaptation department at the Ministry of Infrastructure  and Water Management)


10:15   Official opening of Land Subsidence and Foundations Knowledge Centre
             (Kenniscentrum Bodemdaling en Funderingen, KBF,

             Interview on the role and importance of research and data in designing subsidence strategies with              Annemieke Nijhof (Managing Director Deltares Research Institute) and Tirza van Daalen
             (Managing Director TNO – Geological Survey of the Netherlands)

             Musical intermezzo


11:00   Land Subsidence around the world

  • Houston – Michael Turco (Harris Galveston Subsidence District, Houston, Texas, USA)
  • Shanghai – Shujun Ye (Nanjing University, Jiangsu, China)
  • Venice – Pietro Teatini (Università degli Studi di Padova, Italy)


12:00   Wrap-up morning program and introduction afternoon program

12:15   Lunch break & exhibition booths

13:15   First round Genius Bar and panel discussions

  • Land subsidence in peatlands and greenhouse gas emissions – Pui Mee Chan (KBF-expert greenhouse gasses from peatlands), Erik Jansen (NOBV) and Rienk Schaafsma (coordinator rural area at KBF)
  • Land subsidence and cultural heritage – Luuk Jacobs (KBF-expert) 
  • Urban Infrastructure – Arend van Woerden (KBF-expert urban infrastructure) and Jeroen Mekenkamp (projectleader Platform Slappe Bodem)
  • Drought and land subsidence – Maarten Kuiper (KBF-expert flooding and drought)
  • Foundations – Robert van Cleef (coordinator urban area at KBF) and Don Zandbergen (KBF-expert Foundations)
  • Legal framework and Governance –Willemijn van Doorn (KBF-expert legislative framework) and Martijn van Gils (LOSS expert)
  • Damage estimates - Chris Geurts (TNO-expert)
  • Fissures and sink holes – Dora Carreon Freyre (LaSII expert)
  • Mining and hydrocarbon extraction related land subsidence – Thibault Candela (TNO-expert) and Agnieszka Malinowska (LaSII expert)
  • Groundwater extraction related land subsidence and mitigation strategies – Peter Letitre (Deltares expert)
  • Climate adaptation, spatial planning and land subsidence – Dolf Kern (staf Deltacommissaris)
  • Land subsidence and sea level rise in delta systems – Esther Stouthamer (LOSS expert)

14:05   Second round Genius Bar and panel discussions (see topics above)

15:00   Discussing the findings of the matchmaking sessions and panel discussions

15:30   Closing ceremony of TISOLS 2023

15:45   Drinks & networking
             Visit Land Subsidence and Foundations Knowledge Centre
             Subsidence city walk guided by the “Gouds Watergilde”

             Explore land subsidence in Gouda with a walk using the XPLRE Gouda app

17:00   Adjourn


This day is organised by Knowledge Centre Subsidence & Foundations (, Soft Soils Platform (Platform Slappe Bodem) and TISOLS.


Car parking
The inner city of Gouda is largely car-free. As a result, you can not park next to the church. We advise you to use parking lot 'Klein Amerika' (sector 4). From there it is a 5 minute (400 meter) walk to Sint Jan Church.

Gouda is easily accessible by train, with good connections to The Hague - Zoetermeer - Rotterdam - Alphen a/d Rijn - Schiphol - Amsterdam - Woerden - Utrecht, among others.
Address: Stationsplein (downtown side) and Burgemeester Jamesplein (with parking for cars).
You can reach Sint Jan Church from the Central Station in about a 15-minute walk. You walk out of the station on the center side and then turn left. From here, Sint Jan Church is signposted.