10.48364/ISIMIP.423677 Dor Fridman Dor Fridman 0000-0003-3908-3571 Naota Hanasaki Naota Hanasaki 0000-0002-5092-7563 Peter Burek Peter Burek 0000-0001-6390-8487 Lisa Novak Lisa Novak 0009-0003-5086-1079 Martina Flörke Martina Flörke 0000-0003-2943-5289 Jacob Schewe Jacob Schewe 0000-0001-9455-4159 ISIMIP Repository 2026 Matthias Büchner Matthias Büchner 0000-0002-1382-7424 Jochen Klar Jochen Klar 0000-0002-5883-4273 Paul Kühnel Paul Kühnel 0009-0001-3454-7130 Lisa Novak Lisa Novak 0009-0003-5086-1079 Stefanie Heinicke Stefanie Heinicke 0000-0003-0222-5281 Christian Otto Christian Otto 0000-0001-5500-6774 Franziska Piontek Franziska Piontek 0000-0003-4305-7552 Dánnell Quesada-Chacón Dánnell Quesada-Chacón 0000-0001-5700-1846 Christopher P.O. Reyer Christopher P.O. Reyer 0000-0003-1067-1492 Inga Sauer Inga Sauer 0000-0002-9302-2131 Jacob Schewe Jacob Schewe 0000-0001-9455-4159 Jan Volkholz Jan Volkholz 0000-0002-2533-3739 Martin Park Martin Park 0000-0002-2467-3256 Katja Frieler Katja Frieler 0000-0003-4869-3013 Potsdam Institute for Climate Impact Research (PIK) 03e8s1d88 2026-06-10 en Input dataset https://protocol.isimip.org https://doi.org/10.48364/ISIMIP.478291 1.0 CC0 1.0 Universal Public Domain Dedication This data set provides future domestic and industrial water withdrawal and consumption to be used as input data for ISIMIP3b Group III simulations (Friehler et al., in prep., www.isimip.org). This includes both the multi-model mean and standard deviation from three global hydrological models (H08, WaterGAP, CWatM).<br>The dataset is intended to be used by modelling groups that do not have their own representation. The data for the Group I and II simulations are available from Wada et al. (2022). The data is created using the same approach as for the earlier projections from the Water Futures and Solutions project (WFaS; Wada et al., 2016), with the following important changes and additions: More recent input data from the SSPs was used, including projections of GDP and population from the ISIMIP3b database, and electricity generation from the IMAGE (SSP1), AIM-CGE (SSP3), and REMIND-MAgPIE (SSP5) integrated assessment models, downscaled to country level by IIASA (Sferra et al., 2021). The same technological change rates were applied as in WFaS; for SSP5 (which was not modelled in WFaS) the same technological change rates as in SSP1 are assumed (like in Hanasaki et al., 2013) and technological change rates are applied up to 2050, with no further changes until 2100. Results from the different water use models (H08, WaterGAP, CWatM) are averaged at the grid cell level and rescaled using a constant multiplier to match the historical data in 2015. As in WFaS, we do not consider any effects of climate change on water requirements (or water availability). The resulting projections thus correspond to the “no-adaptation” case in ISIMIP3b Group III. global -179.5 179.5 -89.5 89.5