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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sheng, Zhuping Devere, Jeff |
| Copyright Year | 2005 |
| Abstract | As the latest drought has swept over the southwestern United States, most local and regional water providers have had to rely on ground water to meet their water demands as surface water supplies have diminished. In areas near major population centers this situation has continued to put strain and stress on already over-drafted regional aquifers. Metropolitan centers throughout the southwestern United States, as exemplified by Las Vegas, Nevada; Phoenix and Tucson, Arizona; and El Paso, Texas, have a history of over drafting their available ground water resources. How these stressed aquifers should be managed is an urgent issue. In El Paso, Texas long-term groundwater mining in the transboundary Hueco bolson aquifer has resulted in large water level drawdowns within the basin, particularly in several well fields. This situation has promoted the intrusion of brackish water into fresh water zones, and consequently reduced the volume of fresh water stored in the aquifer. Management of this aquifer is made more complex as the water resources of the region are shared across the United States/Mexico boundary and the transboundary region continues to grow rapidly. This paper describes the current situation within the Hueco bolson due to over drafting and continued reliance on the fresh water in storage and describes how understanding the dynamics of the aquifer as a complex system can offer managerial perspectives that can be used to establish operational procedures and programs for bringing drawdowns into equilibrium, increasing the longevity of the aquifer, gradually restoring water quality, and offering the hope of utilization of the resource in a sustainable manner.Alors que la dernière sécheresse a atteint toute la partie Sud-Ouest des Etats-Unis, la plus part des distributeurs d’eau, locaux et régionaux, doivent s’approvisionner en eau souterraine dés lors que les niveaux des eaux de surface ont diminués. Dans les zones proches des grands centres densément peuplés, cette situation a continuée a altérée des aquifères déjà surexploités. Les centres métropolitains du Sud-Ouest des Etats-Unis (Las Vegas dans le Nevada, Phoenix et Tucson dans l’Arizona, El Paso au Texas) sont connus historiquement pour surexploités leurs ressources en eaux souterraines. Il devient urgent de définir un mode de gestion de ses aquifères surexploités. A El Paso dans le Texas, le minage de l’aquifère transfrontalier engendre un rabattement important dans le bassin, et plus particulièrement autour des zones de captage. Cette situation a induit l’intrusion d’eaux saumâtres dans des zones d’eaux douces, et a par conséquent réduit le volume d’eau douce stockée et exploitable dans l’aquifère. La gestion de cet aquifère est par ailleurs complexifiée par la situation transfrontalière, d’autant que la zone frontalière connaît une croissance rapide. Cet article décrit la situation actuelle dans la vallée fermée du Hueco, due au sur-rabattement et à l’exploitation continue des eaux douces, et décrit comment la compréhension de l’aquifère, vu comme un système complexe, peut offrir des perspectives de gestion amenant à des procédures opérationnelles et à des programmes à long terme permettant de ramener à l’équilibre la baisse des niveaux d’eau. Ainsi la longévité de l’aquifère sera mieux garantie, la qualité de l’eau sera graduellement restaurée et l’utilisation de l’eau respectera le souci de développement durable.A medida que la última sequía ha pasado ligeramente sobre el suroeste de Estados Unidos la mayoría de abastecedores locales y regionales de agua han tenido que depender del agua subterránea para satisfacer sus demandas de agua debido a que las fuentes de agua superficial han disminuido. En áreas cerca de centros poblados principales esta situación ha continuado ejerciendo presión en los ya sobre explotados acuíferos regionales. Los centros metropolitanos en todo el suroeste de Estados Unidos, por ejemplo Las Vegas, Nevada; Fénix y Tucson, Arizona; y El Paso, Texas tienen una historia de sobre explotar los recursos de agua subterránea disponibles.La gestión de estos acuíferos estresados constituye un problema urgente. En El Paso, Texas el minado de agua subterránea a largo plazo en el acuífero transnacional Hueco bolsón ha resultado en varios campos de pozos. Esta situación ha promovido la intrusión de agua salobre hacia zonas con agua fresca y reducido consecuentemente el volumen de agua fresca almacenado en el acuífero. El manejo de este acuífero se hace más complejo debido a que los recursos hídricos de la región son compartidos a través del límite Estados Unidos/México y la región transnacional continúa creciendo rápidamente. Este artículo describe la situación actual dentro del Hueco bolsón debido a la sobre explotación y continua dependencia en el agua fresca almacenada y describe como el entendimiento de la dinámica del acuífero como un sistema complejo puede ofrecer perspectivas de gestión que pueden utilizarse para establecer procedimientos operacionales y programas que conduzcan al equilibrio de los descensos, aumentando la longevidad del acuífero, gradualmente restaurando la calidad del agua, y ofreciendo la esperanza de utilizar el recurso de manera sostenible. |
| Starting Page | 813 |
| Ending Page | 825 |
| Page Count | 13 |
| File Format | |
| ISSN | 14312174 |
| Journal | Hydrogeology Journal |
| Volume Number | 13 |
| Issue Number | 5-6 |
| e-ISSN | 14350157 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2005-06-21 |
| Publisher Institution | International Association of Hydrogeologists |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Transboundary aquifer Hueco bolson Systems management of groundwater Groundwater model Brackish water intrusion |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences Water Science and Technology |
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