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Evaluation of a GIS-Based Integrated Vulnerability Risk Assessment for the Mancha Oriental System (SE Spain)

Author

Listed:
  • Ángel Moratalla
  • Juan Gómez-Alday
  • David Sanz
  • Santiago Castaño
  • Jorge Heras

Abstract

It is widely recognized that groundwater-vulnerability maps are a useful tool for making decisions on designating pollution-vulnerable areas, in addition to being a requirement of European Directive 91/676/EEC. This study addressed the vulnerability of the Mancha Oriental System (MOS) to groundwater contamination with an integrated Generic and Agricultural DRASTIC model approach. In the MOS, groundwater is the sole water resource for a total population of about 275,000 inhabitants and for 1,000 km 2 of irrigated crops. DRASTIC vulnerability maps have been drawn up for two different years (1975 and 2002) in which the potentiometric surface has dropped dramatically (80 m in some areas) due to the considerable expansion of irrigated croplands. The quality of available resources has also deteriorated due to the agricultural practices and the discharge of wastewater effluents. Vulnerability maps are used to test the data on nitrate, sulphate, and chloride contents in groundwater in the Central and El Salobral-Los Llanos hydrogeologic domains of the MOS for 2002. Regardless of the method applied, the dramatic alteration in land use leads to a change in the DRASTIC index and vulnerability to groundwater contamination decreases for the study period. Vulnerability in the MOS increases in areas where the irrigation return flow is notable. The lack of a statistical correspondence between the DRASTIC index and the spatial distribution of nitrate, chloride, and sulphate contents and the distribution of the pollution load suggest that this method does not accurately assess the risk of the MOS to groundwater pollution. Copyright Springer Science+Business Media B.V. 2011

Suggested Citation

  • Ángel Moratalla & Juan Gómez-Alday & David Sanz & Santiago Castaño & Jorge Heras, 2011. "Evaluation of a GIS-Based Integrated Vulnerability Risk Assessment for the Mancha Oriental System (SE Spain)," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(14), pages 3677-3697, November.
    • Handle: RePEc:spr:waterr:v:25:y:2011:i:14:p:3677-3697
    DOI: 10.1007/s11269-011-9876-0
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    References listed on IDEAS

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    1. Martin de Santa Olalla, F. & Calera, A. & Dominguez, A., 2003. "Monitoring irrigation water use by combining Irrigation Advisory Service, and remotely sensed data with a geographic information system," Agricultural Water Management, Elsevier, vol. 61(2), pages 111-124, June.
    2. A. Moratalla & J. Gómez-Alday & J. De las Heras & D. Sanz & S. Castaño, 2009. "Nitrate in the Water-Supply Wells in the Mancha Oriental Hydrogeological System (SE Spain)," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(8), pages 1621-1640, June.
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    Citations

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    Cited by:

    1. Peragón, Juan Manuel & Delgado, Antonio & Pérez-Latorre, Francisco J., 2015. "A GIS-based quality assessment model for olive tree irrigation water in southern Spain," Agricultural Water Management, Elsevier, vol. 148(C), pages 232-240.
    2. Guangyang Wu & Lanhai Li & Sajjad Ahmad & Xi Chen & Xiangliang Pan, 2013. "A Dynamic Model for Vulnerability Assessment of Regional Water Resources in Arid Areas: A Case Study of Bayingolin, China," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(8), pages 3085-3101, June.
    3. Bo Zhang & Guoxiu Li & Pin Cheng & Tian-Chyi Jim Yeh & Mei Hong, 2016. "Landfill Risk Assessment on Groundwater Based on Vulnerability and Pollution Index," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(4), pages 1465-1480, March.
    4. Sina Sadeghfam & Yousef Hassanzadeh & Ata Allah Nadiri & Mahdi Zarghami, 2016. "Localization of Groundwater Vulnerability Assessment Using Catastrophe Theory," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(13), pages 4585-4601, October.
    5. Bo Zhang & Guoxiu Li & Pin Cheng & Tian-Chyi Yeh & Mei Hong, 2016. "Landfill Risk Assessment on Groundwater Based on Vulnerability and Pollution Index," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 30(4), pages 1465-1480, March.
    6. M. Albuquerque & G. Sanz & S. Oliveira & R. Martínez-Alegría & I. Antunes, 2013. "Spatio-Temporal Groundwater Vulnerability Assessment - A Coupled Remote Sensing and GIS Approach for Historical Land Cover Reconstruction," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(13), pages 4509-4526, October.

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