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Stable water isotopes and radon compositions across the Patiño Aquifer, Asunción, Paraguay


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Created: Apr 16, 2026 at 10:48 a.m. (UTC)
Last updated: Apr 18, 2026 at 11:17 a.m. (UTC)
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Abstract

The Patiño Aquifer is a key groundwater source for the metropolitan region of Asunción, Paraguay, supporting domestic, industrial, and agricultural demands. Increasing pressure on this resource highlights the need to better understand recharge processes and groundwater flow dynamics. This study (2019-2025) applied stable water isotopes and dissolved radon to evaluate the hydrological connectivity between precipitation, surface water, and groundwater. This database includes stable water isotopes compositions in precipitation (N=73), groundwater (N=24), and surface waters (N=22) across the Patiño Aquifer in Asunción, Paraguay. In addition, 39 radon measurements in groundwater and surface waters are also included. Our findings improve the understanding of aquifer dynamics and highlight the influence of urbanization and extreme rainfall events on groundwater recharge and quality under changing climatic conditions.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Asunción, Paraguay
Longitude
-57.5848°
Latitude
-25.3116°

Temporal

Start Date:
End Date:

Content

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
International Atomic Energy Agency Ensuring Availability of Groundwater Resources in Paraguay using Isotopic Techniques PAR7002

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Dirección General de Protección y Conservación de los Recursos Hídricos Dirección General de Protección y Conservación de los Recursos Hídricos of the Ministerio del Ambiente y Desarrollo Sostenible (MADES)
Dirección de Meteorología e Hidrología Dirección Nacional de Aeronáutica Civil (DINAC)
ReDCYAP National Research Network for the Dynamics of the Ypacaraí Lake Basin-Patiño Aquifer (ReDCYAP)

How to Cite

Montiel, M. L., R. Sánchez-Murillo, M. Pastén, M. Vital, C. Avalos (2026). Stable water isotopes and radon compositions across the Patiño Aquifer, Asunción, Paraguay, HydroShare, http://www.hydroshare.org/resource/5ee6119e09e54610a0cb865307dbc96c

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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