The eartH2Observe water resources reanalysis (WRR-tier1) multi model ensemble was produced by 8 project partners and 2 associate partners. The modelling systems include four land surface models, 5 global hydrological models and a simple water balance model and covers the period 1979 -- 2012. This version of the WRR is based on the current modelling systems of each group forced with a state-of-the-art atmospheric reanalysis. A description of the multi model ensemble can be found in earth2observe deliverable 5.1 and Schellekens et. al. (under discussion in essd). See: http://earth2observe.github.io/water-resource-reanalysis-v1 (direct link to data and analysis) http://wci.earth2observe.eu (data portal)