Geographic information system applied to the water quality assessment of Ayutthaya Province, Thailand

Supatimusro, D. and Areerachakul, N. and Erdei, L. (2011) Geographic information system applied to the water quality assessment of Ayutthaya Province, Thailand. In: 4th International Water Association Conference (IWA 2011): Toward Sustainable Water Supply and Recycling Systems, 2-6 Oct 2011, Tokyo, Japan.

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Ayutthaya is a popular tourist destination located about 76 km north of Bangkok. The climate of the province is typical of Central Thailand, comprising three (cold, hot, and rainy) seasons, with relatively small changes in average temperatures but significantly varying rainfall patterns. In this study, we present a geographic information system (GIS) used for the assessment and monitoring of pollution in the watershed. The ArcInfo-based system combines geographical, meteorological and hydrological data for multiple uses. Water quality management is based on composite water quality index and corresponding water quality classes. The chief input parameters include temperature, pH, faecal bacteria count (FCB), dissolved oxygen (DO), nitrate (NO3), total phosphates (PO4), biochemical oxygen demand (BOD), suspended solids (SS), and total solids (TS), together with population density, rainfall and land-use. The initial results of years 2008 and 2009 show that water quality derogation is strongly related to high population density in the central (new City) districts that also affect the historical City. In addition, the increased runoff of the rainy season causes significant PO4, NO3, and BOD pollution of the Pa Sak River at the northern agricultural districts.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2011 International Water Association. You may not, in any form or by any means: Adapt, reproduce, store, distribute, transmit, print, display, perform, publish or create derivative works from any part of this article (unless for personal use).
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 03 Sep 2013 05:11
Last Modified: 20 Sep 2017 04:00
Uncontrolled Keywords: ArcInfo; Ayutthaya; GIS; Thailand; water quality index
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
09 Engineering > 0909 Geomatic Engineering > 090903 Geospatial Information Systems
05 Environmental Sciences > 0502 Environmental Science and Management > 050206 Environmental Monitoring
Socio-Economic Objective: D Environment > 96 Environment > 9606 Environmental and Natural Resource Evaluation > 960604 Environmental Management Systems
D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961103 Physical and Chemical Conditions of Water in Fresh, Ground and Surface Water Environments (excl. Urban and Industrial Use)

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