Department of Environmental Management, Bharathidasan University, Tiruchiappallli, 620 024, India.
Environ Monit Assess. 2010 Jul;166(1-4):435-44. doi: 10.1007/s10661-009-1013-7. Epub 2009 Jun 4.
Delta regions of the Cauvery River basin are one of the significant areas of rice production in India. In spite of large-scale utilization of the river basin for irrigation and drinking purposes, the lack of appropriate water management has seemingly deteriorated the water quality due to increasing anthropogenic activities. To assess the extent of deterioration, physicochemical characteristics of surface water were analyzed monthly in select regions of Cauvery Delta River basin, India, during July 2007 to December 2007. Total dissolved solids, chemical oxygen demand, and phosphate recorded maximum levels of 1,638, 96, and 0.43 mg/l, respectively, exceeding the permissible levels at certain sampling stations. Monsoonal rains in Cauvery River basin and the subsequent increase in river flow rate influences certain parameters like dissolved solids, phosphate, and dissolved oxygen. Agricultural runoff from watershed, sewage, and industrial effluents are suspected as probable factors of water pollution.
考维里河流域的三角洲地区是印度主要的稻米产区之一。尽管该河流域大规模用于灌溉和饮用水，但由于人为活动的增加，缺乏适当的水资源管理，水质似乎已经恶化。为了评估恶化的程度，2007 年 7 月至 2007 年 12 月期间，在印度考维里三角洲河流域的选定地区每月对地表水的理化特性进行了分析。总溶解固体、化学需氧量和磷酸盐的最高记录值分别为 1638、96 和 0.43 毫克/升，在某些采样站超过了允许水平。考维里河流域的季风降雨以及随后的河流水流增加影响了某些参数，如溶解固体、磷酸盐和溶解氧。来自集水区的农业径流、污水和工业废水被怀疑是水污染的可能因素。
