The two referees have provided detailed, constructive appraisals of the manuscript. Some of the comments relate to requests for clarifications and additional information, which can be addressed relatively easily. However, other comments will require careful and convincing responses. Thorough and thoughtful revision is required, followed by careful review of a revised manuscript; publication is not guaranteed at this point.
The author responses appear to address the reviews, but the revised manuscript will have to be modified extensively to reflect these responses. To facilitate re-review, it is also critical that the authors clearly mark all revisions in the manuscript.

I agree with the referee that you have done a very good job of addressing the review comments in your revised manuscript. I am therefore pleased to accept the manuscript for publication in HESS at this point.