Articles | Volume 23, issue 5
https://doi.org/10.5194/hess-23-2321-2019
https://doi.org/10.5194/hess-23-2321-2019
Research article
 | 
14 May 2019
Research article |  | 14 May 2019

Hydrogeological conceptual model of andesitic watersheds revealed by high-resolution heliborne geophysics

Benoit Vittecoq, Pierre-Alexandre Reninger, Frédéric Lacquement, Guillaume Martelet, and Sophie Violette

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (further review by editor) (29 Mar 2019) by Gerrit H. de Rooij
AR by Benoit Vittecoq on behalf of the Authors (23 Apr 2019)  Author's response   Manuscript 
ED: Publish subject to technical corrections (24 Apr 2019) by Gerrit H. de Rooij
AR by Benoit Vittecoq on behalf of the Authors (26 Apr 2019)  Author's response   Manuscript 
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Short summary
Water resource management on volcanic islands is challenging and faces several issues. Taking advantage of new heliborne geophysical technology, correlated with borehole and spring data, we develop a watershed-scale conceptual model and demonstrate that permeability increases with age for the studied formations. Moreover, complex geological structures lead to preferential flow circulations and to discrepancy between topographical and hydrogeological watersheds, influencing river flow rates.