From April 15 to 16, 2026, the project team of the project “Underground risks: Ground Water Depletion after the Destruction of the Kakhovka Dam as an Underappreciated Legacy of the Ukraine-Russia War” met for a workshop at LIAG-Institute for Applied Geophysics in Hanover. Further colleagues joined the meeting online from Kyiv and Freiburg. The project is funded by the Leibniz Research Network Environmental Crisis – Crisis Environments and grew out of the working group “Societal Resilience in the Earth System” of the Leibniz Research Network Earth & Societies. The interdisciplinary team of social scientists and geoscientists from Germany and Ukraine discussed aspects of largely neglected groundwater changes as result from the reservoir destruction, although effects are complex and include biodiversity, agriculture and water security in the wider area of the Kakhovka reservoir region.