GRDC River Discharge Dataset for the WMO State of Global Water Resources Report 2025

This dataset contains quality-controlled in situ river discharge observations used in the river discharge analysis of the 2025 edition of the State of Global Water Resources Report. The data include daily and monthly discharge values from 3019 stations in 41 countries covering the years 1991-2025. They were contributed by WMO Members through their National Meteorological and Hydrological Services (NMHSs) to the Global Runoff Data Centre (GRDC). The report, published annually by WMO, provides a comprehensive quantitative overview of global water resources, with a focus on hydrological variability and trends. It supports countries, decision makers and stakeholders in understanding the current state of global water resources, identifying hotspots and supporting effective water management strategies. The dataset is published under CC BY-NC-SA 4.0 If you have questions regarding the dataset, please contact the Global Runoff Data Centre: [e-mail].