Abstract
AbstractMahanadi River and its tributaries are passes through the various important cities of Chhattisgarh and Odisha state in India. It serves as the valuable source of water for its domestic, agricultural and industrial need. To monitor river water quality, analytical hierarchy process-based water quality index (WQI) has been adopted to reveal the general status of water quality spatio-temporally. Along the length of the river variation of quality is modelled by interpolation in GIS platform. It is found that the 13.11% of observed stations located nearby major cities of Chhattisgarh and Odisha are extremely bad in general status. The water is of these locations cannot be used as drinking source even after the conventional treatment and disinfection. 4.91% of location lie under very bad status with controlled waste disposal. 22.95% of location identify as bad status of its quality. 54.09% falls for the medium status and the remaining 4.91% stations are having good class of general status that can be used as drinking source after conventional treatment. This study results the overall WQI in Mahanadi River basin and also gives a strategic evaluation of various water quality monitoring network in a large river system.KeywordsAnalytical hierarchy processCluster analysisMahanadi River systemSustainable useWater quality indexWater quality parameters
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