The authors present a sampling method to select parameters leading to plausible model results. The manuscript has been revised by 2 independent reviewers. All reviewers consider the study of (potential) interest for HESS after moderate revisions.
All reviewers provide detailed comments and suggestions on diverse aspects of the manuscript.
One aspect that the authors should consider during the revision of their work is to further elucidate the metric used for the global sensitivity analysis performed, GSA. Although Sensitivity is an intuitive concept, a variety of approaches/metrics have been proposed in the literature. Since each metric focuses on a different property of the model response(s), diverse metrics may lead to different results (Razavi and Gupta 2016, Water Resources Research, 51, 5, doi: 10.1002/2014WR016527; Dell’Oca et al. 2017, Hydrology and Earth System Science, 21,12, doi: 10.5194/hess-21-6219-2017).

The Authors have seriously taken in consideration the main comments of the reviews and provided a stronger revised manuscript. I therefore recommend its publication in its current form.