Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 29, issue 18
Articles | Volume 29, issue 18
https://doi.org/10.5194/hess-29-4473-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-4473-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29, issue 18
Research article
 | 
17 Sep 2025
Research article |  | 17 Sep 2025

Imprints of increases in evapotranspiration on decreases in streamflow during dry periods, a large-sample analysis in Germany

Giulia Bruno, Laurent Strohmenger, and Doris Duethmann

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Short summary
Decreases in streamflow during dry periods threaten ecosystems and society, and increases in evapotranspiration may contribute to them. From data for small catchments in Germany, summer low flows decreased over 1970–2019, and evapotranspiration increases significantly contributed to that. Lower-than-expected annual streamflow occurred during the 1989–1993 drought in catchments with increases in evapotranspiration. Changes in evapotranspiration need full consideration for streamflow prediction.
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