We make available the daily discharge dataset of the Hydrological Reanalysis across the 20th Century for the Amazon Basin in its v1.0 version, which correspond to the HRXX_Amz.nc file. The matrix of daily discharge contains 36890 columns (one per day, starting at 01Jan/1910) and 12466 rows (one per catchment). Authors: Sly Wongchuig Correa Rodrigo Cauduro Dias de Paiva Vinícius Siqueira Walter Collischonn Institute of Hydraulic Research - (IPH/UFRGS) Brazil - November 2018 Citation: When using these data, please refer to the following paper: Wongchuig, C.S.; Paiva, R.C.D.; Siqueira, V.; Collischonn, W. 2019. Hydrological Reanalysis Across the 20th Century: A Case Study of the Amazon Basin. Journal of Hydrology, vol. 570, p. 755-773. https://doi.org/10.1016/j.jhydrol.2019.01.025