EURO-FRIEND, Flow Regimes From International Experimental and Network Data

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Project 1

European Water Archive (EWA)

European Water Archive: 4105 Stations in Europe

The development of a hydrological database, the European Water Archive (EWA), has been a central feature at the inception of the EURO-FRIEND-Water Programme in 1985. EWA is now one of the most comprehensive hydrological archives in Europe, containing long-term daily flow data and catchment information from more than 4000 river gauging stations in 30 countries.

EURO-FRIEND-Water Project Group 1 had formal responsibilities for coordinating data acquisition and dissemination to FRIEND-Water researchers. The Global Runoff Data Centre (GRDC), Federal Institute of Hydrology, Koblenz, Germany, hosts the European Water Archive.

Data acquisition as part of the European FRIEND-Water programme and the maintenance of a separate EWA database became increasingly difficult to justify, considering the limited number of data requests. GRDC embarked on a strategy of integrated data acquisition, including EWA data, and all supplied data are now been included in the GRDC database.
 At the October 2014 EURO-FRIEND-Water meeting in Montpellier it was concluded that the EWA will no longer be updated and data providers should be encouraged to provide data to the GRDC instead. The following was decided:

  • The European Water Archive (EWA) will be “frozen” at its current state.
  • EWA data can still be provided by the GRDC on special request by writing to
  • GRDC will request permission from the data providers to include EWA stations and associated data into the GRDC database.
  • The EWA stations integrated into the GRDC database will be flagged as EWA affiliated stations.
  • All data will be provided according to GRDC data policy.
  • Data can be ordered for EURO-FRIEND-Water project purposes free of charge by following GRDC data ordering procedures.

Project coordinator:

Mr Ulrich Looser

Global Runoff Data Centre, Koblenz, Germany.

T: +49 261 1306 5224

F: +49 261 1306 5722

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EWA - European Water Archive


River Pang, UK
River Pang, UK