TY - BOOK AU - Kori, Basappa B. AU - Devappa, V.M. AU - Mise, Shashikanth R. TI - Water Quality Index of Karanja River in Bidar Distrcit, Karnataka, India KW - Anthropogenic activity, KW - Water quality index KW - River ecology and physicochemical parameters N2 - Karanja River is one of the important tributary of river Godawari. Karanja River is the principal source of water for drinking, irrigation & for industrial use situated in the vicinity in the Bidar District of North Karnataka. Industries, particularly sugar factories, pulp & paper industries and distillery units discharge treated or partially treated effluent into the karanja reservoir, therefore it is decided to study the evaluation of water quality from five sampling points along the river during December 2007 to November 2009, all the samples are analyzed for physicochemical parameters by standard procedure of APHA. (1989). A Simple, Comprehensive weighted arithmetic method has been used for calculating season wise water quality index. The Water quality index of the samples season wise varies 66. 16 to 81.88. This indicates the quality of water is poor; therefore this method is useful tool in many ways in the field of water quality management ER -