Dear authors,

Thank you for your careful addressing of the reviewer comments and already providing a revised version of the manuscript. I have only some minor comments to be tackled yet, and will be happy to move the paper forward to publication after these have been addressed as well.

- In reply to a reviewer comment, you added information on the topical contents of the activity on P5 L28–31. This is most welcome, but it sounded like forming the temporary river basin commission mainly involves administrative tasks. Along the original reviewer comment, could you clarify whether issues like water allocations and water quality are also negotiated?

- Please carefully check reference style, e.g. P4 L10 (to “…point, Schnurr et al. (2013) detailed…”), P4 L17 (to “…experience of Rusca et al. (2012) indicated…”), P10 L26–27 (to “(possibly by their peers to facilitate active learning, e.g., Lyon and Teutschbein, 2011)”). You mentioned in your reply that this was fixed, but it appeared unchanged in the revised manuscript. (*)

- The first author name for the reference on P1 L26 should be “Di Baldassarre”.

- Please complete the following sections required by the journal: Data availability (along the lines of what you added to P5 L23–25, or directly moving that), Author contributions, Competing interests. (*)

Kind regards,
Daniel Viviroli

(*) see https://www.hydrology-and-earth-system-sciences.net/for_authors/manuscript_preparation.html