State of knowledge of coastal aquifer management in South America |
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Authors: | Emilia Bocanegra Gerson Cardoso Da Silva Jr Emilio Custodio Marisol Manzano Suzana Montenegro |
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Institution: | 1. Centro de Geología de Costas y del Cuaternario, National University of Mar del Plata (UNMDP), Casilla de Correo 722, 7600, Mar del Plata, Argentina 2. Federal University of Rio de Janeiro (UFRJ), Rua Brig. Trompowski s/n. 21941-590, Rio de Janeiro, Brasil 3. Technical University of Catalonia (UPC), Jordi Girona 1-3, Building D2, 08034, Barcelona, Spain 4. Technical University of Cartagena (UPCT), P de Alfonso XIII 52, 30203, Cartagena, Spain 5. Federal University of Pernambuco (UFP), Av. Acad. Hélio Ramos, s/n. CEP 50.740-530, 1235, Recife, PE, Brazil
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Abstract: | A comparative analysis of the existing hydrogeological and management information from 15 coastal aquifers in South America was performed in order to obtain insight into common features of the sub-continent coastal zones. Some knowledge from other areas has been incorporated. There is a very variable degree of knowledge and management practice, ranging from almost no data and no action (the most common case), to sound conceptual models about aquifer behaviour and comprehensive management actions such as relocation of abstractions, pumping brackish groundwater, and aquifer vulnerability mapping. Some common features are: intensive groundwater exploitation; lack of characterization studies to support resource planning and management; lack of monitoring networks; and the need for raising awareness within society and its involvement in resource planning and management action programmes. Quality and quantity problems arising in heavily populated areas associated with coastal aquifers in South America point to unsustainable groundwater development. The sustainable use of those aquifers must rely on adequate evaluation of aquifer characteristics and monitoring. |
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