The authors provide a very valuable, comprehensive measurement tool for rivers. A multiplicity of parameters is retrieved by the sensors of the observation platform, which allow for an extensive assessment of river dynamics. The applicability at remote areas and the measurement of discharge as well as sediment load will make the observations very valuable for the improvement of process understanding and models, especially in the thus far sparsely observed mountainous small to medium scale catchments. The platform is described and discussed in detail and its functioning is supported by a suitable case study. The platform will be helpful for a large group of scientists amongst others working in the field of hydrology and geomorphology. Two detailed and supporting reviews were provided and the authors answered each comment thoughtfully and made the necessary changes to the manuscript.
There are solely some minor technical corrections needed. Please, check if it is possible to improve figure 5 and 6 because at the moment it makes the impression that they had been quickly drawn for a first visualisation (e.g. arrows do not fit similar to each text box or large box margins). In figure 14 the font size of the x-axis should be increased and in figure 2 and in the Appendix the font size should be checked in the entire figure because many words are not readable/difficult to read. Please, also revise the quality screenshots of figure 6 to 12 because the words are difficult to identify, as well. Furthermore, please check if the caption in figure 6, 7, and 12 also contain the sentences below the bold text because they are formatted separately. Finally, please revise the table according to the journals standard (“Horizontal lines should normally only appear above and below the table, and as a separator between the head and the main body of the table.”), also considering a consistent font size.
I suggest that the paper can be published after the technical issues have been addressed.