Dear EGU Hydrology community, Over the past few years, machine learning (ML) and artificial intelligence have fundamentally changed what is possible in large-scale hydrological modeling. At Google, our team has worked to develop machine learning river forecast models that operate globally, extending reliable forecasting to ungauged basins and covering almost two billion people through the …[Read More]
Hydrological Sciences
1st International Training School on Urban Water Management and Nature-based Solutions for Sustainable Cities
From 7-8 September 2026, the 1st International Training School on Urban Water Management and Nature-based Solutions for Sustainable Cities was held in Munich, Germany. Organised by researchers from the Technical University of Munich, the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, and the University of Cagliari in collaboration with the International Association …[Read More]
eDNA4Hydrology
What flows around comes around For centuries, hydrologists have studied the flow of water through landscapes near and far. We measured flow rates, mapped aquifers and followed invisible paths of raindrops through soil and bedrock. Hydrology is a meticulous, beautiful science that has taught us much over the years. From the water cycle, surface water …[Read More]
Summary of the August 26th, 2026, Himalayan flash flood
At the time of preparing this blog entry, we are less than 48 hours after the catastrophe which has hit the Himalaya. While the flow of new information continues, it is useful to summarize and clarify the key points around this event. WHAT? The massive destruction was caused by a flash flood. It was such …[Read More]
Drought in Europe
Many of us are experiencing it right now: Europe is suffering from a long lasting large scale drought (Fig. 1), with record heat and low-flow levels that probably nobody of us has seen before; and current forecasts do not announce any relieve for the coming weeks. The pictures of record low levels in the river …[Read More]
Has groundwater finally gone mainstream?
Groundwater has always had an image problem. Throughout my career, I have lost count of how many times we have described groundwater as an “invisible resource” or similar. It is almost a cliché in hydrogeology. We use the phrase because it captures something really fundamental: groundwater is hidden physically, but it has also been hidden …[Read More]
What machine learning can and cannot tell us about floods
Floods are shaped by complex and nonlinear interactions between weather patterns, rainfall, soil properties, topography, land cover, and how wet a catchment already is. This complexity is one reason machine learning (ML) is increasingly used in hydrology. ML models can learn patterns from large and complex datasets with many variables. Early in my PhD, while …[Read More]
HydroTalks: Prof. Thom Bogaard on Water and Landslides, Early Warning Systems, and IAHS-HELPING Decade
For episode 11 of HydroTalks, we welcomed Prof. Thom Bogaard of Delft Technical University and visiting professor at Kasetsart University, Bangkok. His research explores the intersection of hydrology, geomorphology, ecology, and natural hazards. We discussed his work on understanding how water triggers landslides, improving regional early warning systems, and developing practical solutions that reduce disaster …[Read More]
Meet your ECS Rep – Archita Bhattacharyya
Archita Bhattacharyya is an Environmental Scientist and a research and development fellow at the Department of Environment, Food and Rural affairs, England. For 2026, she is the Early Career Scientist Representative for the Hydrological Sciences division. Can you tell us about the focus of your research? In my PhD, I focused on groundwater microbiology, especially …[Read More]
Dialogue is essential for advancing hydrological science
A little over a decade ago, a group of us argued that “it takes a village to raise a hydrologist”. The skills and knowledge any hydrologist should be exposed to during their training goes far beyond what a single person can do and know. Even more, the experience of how water shapes and interacts with …[Read More]