Dear Author,
Two referees provided a number of constructive comments that can potentially improve the quality of this paper. I recommend to carefully address all the criticism in revising the paper before submission to HESS.
The revised paper should be submitted together with a pointy-point response to all comments.
Afterwards, it will undergo another round of external review before my final decision.
Kind regards,
Giuliano Di Baldassarre

Dear Author,
As mentioned, your revised paper and the point-by-point response will undergo a second round of external review.
Kind regards,
Giuliano Di Baldassarre

Dear Authors,
Referee #1 appreciated that the revised version adequately addresses all the issues raised, while Referee #2 pointed to a number of issues. I therefore recommend addressing the remaining concerns of Referee #2 and revising the paper accordingly. After resubmission, I will directly make a final decision (editor review).
Kind regards,
Giuliano D Baldassarre

Dear Author,
All referees' comments were properly addressed.
The paper can be accepted for publication on HESS.
Congratulations!
Giuliano Di Baldassarre