Journal Pre-proof Identification of the components of a complex groundwater flow system subjected to intensive exploitation Selene Olea-Olea, Oscar Escolero, Jürgen Mahlknecht, Lucia Ortega, Raúl Silva- Aguilera, José Roberto Flores-Peñaloza, Juan Perez-Quezadas, Olivia Zamora- Martinez PII: S0895-9811(19)30482-1 DOI: https://doi.org/10.1016/j.jsames.2019.102434 Reference: SAMES 102434 To appear in: Journal of South American Earth Sciences Received Date: 6 September 2019 Revised Date: 20 November 2019 Accepted Date: 20 November 2019 Please cite this article as: Olea-Olea, S., Escolero, O., Mahlknecht, Jü., Ortega, L., Silva-Aguilera, Raú., Flores-Peñaloza, José.Roberto., Perez-Quezadas, J., Zamora-Martinez, O., Identification of the components of a complex groundwater flow system subjected to intensive exploitation, Journal of South American Earth Sciences (2019), doi: https://doi.org/10.1016/j.jsames.2019.102434. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier Ltd.