文章基本信息

标题：Groundwater Quality Assessment in Lower Tamirabharani River Basin Tamil Nadu, India
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作者：M. Senthilkumar ; Rajakumar T. Jeyavel
期刊名称：International Research Journal of Earth Sciences
电子版ISSN：2321-2527
出版年度：2014
卷号：2
期号：10
页码：8-15
语种：English
出版社：International Science Community Association
摘要：For analyzing the multiple thematic maps at a time, GIS is a prevailing tool. GIS investigation is carried out in the present study area to locate the best quality of groundwater zones in Lower Tamirabharani River basin. Totally 48 Groundwater samples have been collected from various places of Lower Tamirabharani river basin. Groundwater study of the area, water samples were collected in an area of 1255.26 km and analyzed for major cations and anions. The values of analyzed Groundwater samples are compared with WHO water quality standards. It is observed that, most of the groundwater quality values are not suitable for drinking purpose. ArcGIS was employed, to understand the spatial distribution of incompatible zones. Attributes were linked in ArcGIS and spatial interpolation mapping was done. To locate the best quality groundwater domain, GIS analyses are supportive. The final integrated map reveals that good for groundwater quality zones covered in area about 113.73 Km. Moderate class combinations cover an area of 702.30 Km. Bad and very bad class of groundwater is not suitable for the drinking purpose and covers an area of 335.26 Km and 103.97 Km. The saline area is differentiating using the EC groundwater quality data. Totally 72.92% of the samples are suitable for irrigation purposes. Compare to SAR and sodium percentage, 91.67% of the samples are within the acceptable limit and the groundwater is suitable for irrigation purpose.
关键词：GIS (Geographic Information System);spatial distribution Map;SAR (Sodium Adsorption Ratio)