Minor Changes made to the Paper at the Request of One Reviewer/Editor Dear Editor, The following minor changes have been made as requested: - Table 3: It is not clear from the text how exposure values for which ranges are presented are handled in the analysis. Response: we have added text to explain this – see page 8 of the manuscript with the text highlighted in yellow. - L. 484-485: As discussed in the response to reviewers, you added that you will look for further funding after the initial project phase. In table S6 it is more or less clear that the costs are for a 5- year period. I think it would be good to repeat this in this sentence, so it is clear for the reader when the project will be evaluated and funding will be sought for continuation. I think they just mean to add a sentence before Table S6 (because we already say this in the main text). Response: we have added text to the Supplementary Material file – see page 9 of this file with the text highlighted in yellow. Best wishes, The authors The Value of Citizen Science for Flood Risk Reduction: Cost-benefit Analysis of a Citizen Observatory in the Brenta-Bacchiglione Catchment Michele Ferri1, Uta Wehn2, Linda See3, Martina Monego1, Steffen Fritz3 5 1Alto-Adriatico Water Authority/Autorità di bacino distrettuale delle Alpi orientali (AAWA), Cannaregio 4314, 30121 Venice, Italy 2IHE Delft Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands 3International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, 2361 Laxenburg, Austria Correspondence to: Michele Ferri (
[email protected]) 10 Abstract.