Articles | Volume 19, issue 10
https://doi.org/10.5194/hess-19-4183-2015
https://doi.org/10.5194/hess-19-4183-2015
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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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.