European Flood Awareness System (EFAS) historical and forecast data and documentaion is now being provided by the CDS.
The aim of EFAS is to support preparatory measures before major flood events strike, particularly in the large trans-national river basins and throughout Europe in general.
The CDS is the EFAS recommended and easiest way to access EFAS data and all relevant metadata information.
The following link gives acces to the entries in the CDS Catalogue for the discovering and downloading of EFAS data: https://cds.climate.copernicus.eu/#!/search?text=efas.