Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 27, issue 3
Articles | Volume 27, issue 3
https://doi.org/10.5194/hess-27-689-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-27-689-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 27, issue 3
Research article
 | 
09 Feb 2023
Research article |  | 09 Feb 2023

A mixed distribution approach for low-flow frequency analysis – Part 1: Concept, performance, and effect of seasonality

Gregor Laaha

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Latest update: 29 Jun 2025
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Short summary
Knowing the severity of an extreme event is of particular importance to hydrology and water policies. In this paper we propose a mixed distribution approach for low flows. It provides one consistent approach to quantify the severity of summer, winter, and annual low flows based on their respective annualities (or return periods). We show that the new method is much more accurate than existing methods and should therefore be used by engineers and water agencies.
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