World Meteorological Organization

The Global Terrestrial Network for River Discharge (GTN-R) is the river discharge component of the Global Terrestrial Network - Hydrology (GTN-H) to support the Global Climate Observing system (GCOS) and the Hydrology and Water Resources Programme of the WMO (HWRP). The basic idea of the GTN-R project is to draw together the already available real-time discharge data provided by the National Hydrological Services (NHS) and to redistribute it in a standardised way. Core component is the GCOS Baseline River Network of gauging stations located near to the mouth of the World's major rivers. In cooperation with the Hydrological Services of the WMO Member States this network is constantly being extended by confirmation of additional stations. The GCOS Baseline River Network is a project in progress with a current status as of December 2017 of 290 gauging stations worldwide.