Dear authors

your manuscripts received very positive referee reports. An interesting, good quality research, well described and presented. Only some more explanations and discussions have been asked for. I think your replies to the clarification-questions of the referees is very adequate. However, I do not see why the authors propose to use the word 'multi-annual' to replace the 'long-term' wording for a two-year data set. I think that being specific in your text and write 'two-year' (as that is what it is), is a more appropriate revision.
I look forward receiving the revised paper in due time. It will undergo editorial review only.

Kind regards
Thom Bogaard

Dear authors

thanks for the re-submission. I am happy to inform you I accepted the paper for publication in Hess. You paper contains a unique high frequent 2-year water quality data set, an thorough analysis on the relation of hydrochemical behaviour of the Erlenbach catchment and the environmental controls. Overall, you show large variation in cQ behavior and controls. The conceptualisation of your findings in Figure 6 is a figure which I think many colleagues will use. Compliments.
Kind regards
Thom Bogaard