Articles | Volume 29, issue 13
https://doi.org/10.5194/hess-29-2749-2025
https://doi.org/10.5194/hess-29-2749-2025
Research article
 | 
02 Jul 2025
Research article |  | 02 Jul 2025

Drought decreases annual streamflow response to precipitation, especially in arid regions

Alessia Matanó, Raed Hamed, Manuela I. Brunner, Marlies H. Barendrecht, and Anne F. Van Loon

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Short summary
Persistent droughts change how rivers respond to rainfall. Our study of over 5000 catchments worldwide found that hydrological and soil moisture droughts decrease river-flow response to rain, especially in arid regions, while vegetation decline slightly increases it. Snow-covered areas are more resilient due to stored water buffering changes. Droughts can also cause long-lasting changes, with short and intense droughts reducing river response to rainfall and prolonged droughts increasing it.
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