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Seasonal Water Quality Trends in the Feitsui Reservoir Watershed, Taiwan
Abstract:Protecting is the sources of drinking water is the first barrier of contamination of drinking water. The Feitsui Reservoir watershed of Taiwan supplies domestic water for around 5 million people in the Taipei metropolitan area. Understanding the spatial patterns of water quality trends in this watershed is an important agenda for management authorities. This study examined 7 sites in the watershed for water quality parameters regulated in the standard for drinking water source. The non-parametric seasonal Mann-Kendall-s test was used to determine significant trends for each parameter. Significant trends of increasing pH occurred at the sampling station in the uppermost stream watershed, and in total phosphorus at 4 sampling stations in the middle and downstream watershed. Additionally, the multi-scale land cover assessment and average land slope were used to explore the influence on the water quality in the watershed. Regression models for predicting water quality were also developed.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1071508Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1331
 R. Plummer, J. Velani┼íkis, D. de Grosbois, R. D. Kreutzwiser, and R. de Lo├½, "The development of new environmental policies and processes in response to a crisis: the case of the multiple barrier approach for safe drinking water," Environ. Sci. Policy, vol. 13, pp. 535-548, 2010.
 L. A. Sprague and D. L. Lorenz, "Regional Nutrient Trends in Streams and Rivers of the United States, 1993−2003," Environ. Sci. Technol., vol. 43, pp. 3430-3435, 2009.
 M. Boeder and H. Chang, "Multi-scale analysis of oxygen demand trends in an urbanizing Oregon watershed, USA," J. Environ. Manage., vol. 87, pp. 567-581, 2008.
 C. P. Tran, R. W. Bode, A. J. Smith, and G. S. Kleppel, "Land-use proximity as a basis for assessing stream water quality in New York State (USA)," Ecolo. Indic., vol. 10, pp. 727-733, 2010.
 Y. S. Yu, S. Zou, and D. Whittemore, "Non-parametric trend analysis of water quality data of rivers in Kansas," J. Hydrol., vol. 150, pp. 61-80, 1993.
 H. D. Passell, C. N. Dahm, and E. J. Bedrick, "Nutrient and organic carbon trends and patterns in the upper Rio Grande, 1975-1999" Sci. Total Environ., vol. 345, pp. 239-260, 2005.
 H. Chang, "Spatial analysis of water quality trends in the Han River basin, South Korea" Water Res., vol. 42, pp. 3285-3304, 2008.
 R. M. Hirsch and J. R. Slack, "A Nonparametric Trend Test for Seasonal Data with Serial Dependence," Water Resour. Res., vol. 20, pp. 727-732, 1984.
 C. D. Evans, J. M. Cullen, C. Alewell, J. Kop├ícek, A. Marchetto, F. Moldan, A. Prechtel, M. Rogora, J. Vesel├¢, and R. Wright, "Recovery from acidification in European surface waters," Hydrol. Earth Syst. Sc., vol. 5, pp. 283-297, 2001.
 R. M. Hirsch, R. B. Alexander, and R. A. Smith, "Selection of methods for the detection and estimation of trends in water quality," Water Resour. Res., vol. 27, pp. 803-813, 1991.