Understanding runoff processes in a semi-arid environment through isotope and hydrochemical hydrograph separations

Camacho Suarez, V. V.; Saraiva Okello, A. M. L.; Wenninger, J. W.; Uhlenbrook, S.

doi:10.5194/hess-19-4183-2015

Articles | Volume 19, issue 10

https://doi.org/10.5194/hess-19-4183-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/hess-19-4183-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 19, issue 10

Research article

|

20 Oct 2015

Research article |

| 20 Oct 2015

Understanding runoff processes in a semi-arid environment through isotope and hydrochemical hydrograph separations

V. V. Camacho Suarez, A. M. L. Saraiva Okello, J. W. Wenninger, and S. Uhlenbrook

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Latest update: 23 Nov 2025

Short summary

Isotope and hydrochemical tracers are tested providing new insights to isotope hydrograph in semi-arid areas in southern Africa. This study provides a spatial hydrochemical characterization of surface and groundwater sources, end member mixing analysis, and two- and three-component hydrograph separations. Results showed that the Kaap catchment is mainly dominated by groundwater sources, and direct runoff is positively correlated with the Antecedent Precipitation Index during the wet season.