Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 3
Articles | Volume 30, issue 3
https://doi.org/10.5194/hess-30-591-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-591-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 3
Research article
 | 
03 Feb 2026
Research article |  | 03 Feb 2026

An original approach combining biogeochemical signatures and a mixing model to discriminate spatial runoff-generating sources in a peri-urban catchment

Olivier Grandjouan, Flora Branger, Matthieu Masson, Benoit Cournoyer, Nicolas Robinet, Pauline Dusseux, Angélique Dominguez Lage, and Marina Coquery

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Short summary
This study presents a novel approach aimed at using biogeochemical data from surface water to decompose streamwater flow into spatial and vertical contributions. A selection of tracers was used in a mixing model to estimate contributions at the outlet of a peri-urban catchment. Results provided a better understanding of hydrological processes in the catchment and demonstrated the potential of biogeochemical data to discriminate spatial contributions according to land use.
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