Dear Authors,

You have suitably replied to all points raised by referee #1, #2 and the comment by G. Spraggs, especially with respect to my main concerns (referring to unpublished literature and too little discussion of uncertainties).
Please replace as suggested Legg and McCarthy with the MetOffice references. Please also make sure that you refer to the newly published Smith et al (2019) paper where appropriate (e.g. the drought uncertainty consideration mentioned at the end of comment D) and that you include a short discussion of the uncertainties involved in your drought analyses.
Also, I recommend adding as a supplement a list of the 108 catchments used in the study, with the most important metadata (river/gauge name, size, hydrolclimatic region, etc) plus, if helpful, a reference to Barker et el (2018).
Please go ahead and prepare and submit two new versions of your manuscript with all proposed changes: one with, one without track changes.

Yours sincerely, Uwe Ehret

Dear Authors,

Done. Congratulations!

Yours sincerely, Uwe Ehret