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GRDC Data and Map Products

Freshwater Fluxes into the World's Oceans

Continental freshwater input to the oceans is computed by the GRDC at irregular intervals. In December 2020 annual freshwater fluxes from continents into the respective oceans are derived from the WaterGAP 2.2d reanalysis for the period 1901–2016.

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Annual Characteristics and Long-Term Statistics of GRDC Timeseries Data

Basic hydrological statistics of timeseries data of the gauging stations being represented in the Global Runoff Database. Annual characteristics are derived from monthly discharge data, either aggregated daily data or originally provided monthly data. Long-term statistics and long-term variablity are derived from annual characteristics

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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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