Understanding the Variability in Estimation of Water Quality of Lakes and Reservoirs

Abstract This paper presents a critical review on the existing methodology of water quality assessment of lakes and reservoirs being used as a source of water supply and irrigation purposes. The seasonal and depth-wise variations in water quality are also analysed and presented through two case studies. It is inferred that water quality monitoring is a helpful tool not only to evaluate the impacts of pollution sources but also to ensure an efficient management of water resources and the protection of aquatic life. However, it is incomplete to make any meaningful prediction without correlating the prevailing catchment characteristics as well as imparting the scope for real-time action plan. The present study highlights a few strategic features causing variability in water quality and proposes a corroborative plan to address those issues.