Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 2
Articles | Volume 30, issue 2
https://doi.org/10.5194/hess-30-433-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-433-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 2
Research article
 | 
28 Jan 2026
Research article |  | 28 Jan 2026

Questioning the Endorheic Paradigm: water balance dynamics in the Salar del Huasco basin, Chile

Francisca Aguirre-Correa, Oscar Hartogensis, Pedro Bonacic-Vera, and Francisco Suárez

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Short summary
We studied an arid, endorheic basin in the Chilean Altiplano to understand how rainfall and evaporation affect groundwater and water availability. Using a rainfall-runoff model and 40 years of satellite data, we found that much of the water evaporates and less reaches the aquifers than expected. Our results challenge the idea that the basin is fully closed and suggest that current water budget estimates may need revision, an urgent task under a changing climate.
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