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GRDC Data and Map Products

All data and map products are provided under the conditions of the GRDC Data Policy, which states the non-commercial use of the data and the overall citation of GRDC as the source. If you are interested to use GRDC data or products for your research, please accept and sign the Declaration of the Data User and send it to GRDC together with an explanatory summary of the project for which the data or map layers are needed. Please cite in all publications and products using the GRDC data or data products the GRDC as the source of data: Global Runoff Data Centre ([YYYY]): [Title] / Global Runoff Data Centre. Koblenz, Federal Institute of Hydrology (BfG), [YYYY].

Disclaimer: GRDC reserves the right not to be responsible for the correctness, completeness or quality of the data behind the derived data. Ownership of the input data and responsibility for errors remain with the data providers. While every effort is made to check data for plausibility and to eliminate identified errors, there may be errors in the data unknown to the GRDC. Neither the GRDC nor its sponsors can be held responsible for the consequences of the use of GRDC data.

Global Freshwater Fluxes into the World Oceans (GRDC, 2014)

The GRDC Global Freshwater Fluxes into the World Oceans are re-calculated and displayed for land areas associated with the UNEP GIWA Regions (UNEP, 2014) and as well freshwater fluxes from the 5° cells along the continent's coastlines. Freshwater fluxes calculated per 5° and 10° latitude bands show how much freshwater flows from a specific continent into a specific ocean.

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Long-Term Mean Monthly Discharges and Annual Characteristics of GRDC Stations (GRDC, 2017)

Basic statistics of all stations being represented in the Global Runoff Database: Calculated quantities are: mean, minimum, and maximum of monthly discharge and the standard deviation, as well as time series of mean, minimum, and maximum values.

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Global Composite Runoff Fields (CSRC-UNH and GRDC, 2002)

The Global Composite Runoff Fields product was developed in a cooperation between the Water Systems Analysis Group (WSAG) at CSRC of University of New Hampshire (UNH) and the GRDC. It demonstrates the potential of combining observed river discharge information with a climate-driven water balance model in order to develop composite runoff fields which are consistent with observed discharges.

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