As also stated by both reviewers, this work is important and timely. It combines data from several sources to highlight the role of fine-scale hydrogeological features on hydrological processes. As nicely stated by reviewer 2: “The work addresses important questions regarding the description of connectivity and interaction between groundwater and surface water in mountainous catchments. The authors develop in their paper an interesting vision at the interfaces between geomorphology, hydrology and hydroecology (principally fish habitats)