Welcome to the Global Runoff Data Centre

The GRDC  Website has undergone a complete makeover. This step became necessary to meet requirements from both our customers and our IT support infrastructure.

We are proud to release the new Website in the year of the 20th Anniversary of  the GRDC. As part of the celebrations the GRDC is planning a Colloquium during the 4th week of June 2009, to coincide with the next Steering Committee Meeting. At the Colloquium research based on GRDC data will be showcased.

For further news, new products and the latest database developments please visit us from time to time. Together with the GRDC team I hope that you enjoy the new GRDC Website. (Ulrich Looser, Head of the GRDC)

This is the Global Runoff Data Centre, a repository for the world's river discharge data and associated metadata.

Banner illustrating GRDC tasksFacilitating data exchange today and tomorrow

The GRDC is an international archive of data up to 200 years old, and fosters multinational and global long-term hydrological studies. Originally established two decades ago, the aim of the GRDC is to help earth scientists analyse global climate trends and assess environmental impacts and risks. Positioned as a facilitator for exchanges between data providers and data users, the GRDC has become a focal point for international cooperation. Researchers, universities and other organisations make use of the facilities available for research programmes and projects.

The Global Runoff Database at GRDC is a unique collection of river discharge data collected at daily or monthly intervals from more than 7300 stations in 156 countries. This adds up to around 280 000 station-years with an average record of 38 years. The GRDC provides discharge data and data products for non-commercial applications.

The GRDC operates under the auspices of the World Meteorological Organisation (WMO) and supports research on global climate change and integrated water resources management. The German Federal Institute of Hydrology (Bundesanstalt für Gewässerkunde or BfG) hosts the GRDC in Koblenz near the confluence of the Moselle and Rhine Rivers.