 The study aims to analyze the impact of human activities on water resources over large scales using macroscale hydrological models, MHMs. The authors couple a global water demand model with a global hydrological model and simulate daily water withdrawal and consumptive water use from 1979 to 2010. They take into account the mutual feedback between supply and demand, implement a new water allocation scheme, and include a new irrigation scheme that works dynamically with surface and soil water balance. The results show an increase in both surface water and groundwater use worldwide, with a more rapid increase in groundwater use since the 1990s. Human impacts on terrestrial water storage, TWS, signals are evident, altering seasonal and inter-annual variability. Including human water use and associated reservoir operations improves the correlation of simulated TWS anomalies with those of the grace observations. This article was authored by Y. Wada, D. Wisser, and M. F. P. Birkins. We are article.tv, links in the description below.