Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 14
Articles | Volume 30, issue 14
https://doi.org/10.5194/hess-30-4699-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-4699-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 14
Research article
 | 
27 Jul 2026
Research article |  | 27 Jul 2026

Impact of seasonal snow on the recharge of a mountain karst aquifer under climate change: the Dévoluy case study (Southern Alps, France)

Nathan Rispal, Bruno Arfib, Philippe Audra, Pierre Henry, Benoît Viguier, Alexandre Zappelli, Ludovic Mocochain, Marianna Jagercikova, Christine Vallet-Coulomb, Hélène Miche, Laurent Cadilhac, Vianney Sivelle, and Olivier Delestre

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Short summary
In mountain karst regions, seasonal snow is a key component of groundwater recharge, making them highly vulnerable to climate change. Using a rainfall-snow-discharge model in the southern French Alps, we show that warming shifts high-flow periods and causes a strong summer flow decline. Rapid karst flow paths lead to quick spring responses, limiting storage above the base level and increasing sensitivity to future hydrological change.
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