Dear Authors,
Your original submission was evaluated by three reviewers who have different backgrounds and expertise. Overall, their appraisals were very positive, with a good rating in terms of scientific significance and quality as well as the presentation of your results. However, as a result of the discussion step of the journal, two out of the three reviewers also raised some concerns in a few points of your paper and suggested ways for improvements. Therefore, I release your submission with an invitation to upload in due course a revised version with some moderate/major changes. Please be advised that a short round of additional reviews might be required.

Dear Authors:
The study reported in your revised manuscript is in a good shape now and close to the final acceptance. All of the three reviewers evaluated it very well and were also satisfied with your replies. However, Refs. #2 and #3 suggested a few minor changes and technical corrections that I would like to see in the final paper. If you disagree with some of these comments, please explain why clearly. Please, upload soon an additional revised version that highlights the changes made.

Dear Authors,
Your last revision can now be accepted as it is for the final publication in HESS. Congratulations!
Nunzio Romano