Turbidity can be defined as the opaqueness of water due to presence of suspended materials. The higher the amount of total suspended solids in the water, the higher the measured turbidity. Causes of turbidity include soil erosion, waste discharge, urban runoff, and algal growth. Turbidity is also defined as the reduction of clarity in water due to the presence of suspended or colloidal particles. Monitoring of turbidity becomes extremely important during events like Kumbh Mela which causes a sudden rise in river turbidity. Remote sensing obtains an optical measure of water turbidity in terms of Backscattering Units. Remotely sensed image from satellite has the potential to provide crucial information to offer considerable advantages for the study of large areas, determination of current and circulation patterns, and monitoring of sedimentation, water productivity, and eutrophication. WHO, The World Health Organization, establishes that the turbidity of drinking water should not be more than 5 NTU, and should ideally be below 1 NTU. But Ganga river flowing through Allahabad shows a sudden increase in turbidity up to 13-14 BU during the Kumbh mela Event. Turbidity increase results in harming the habitat areas for fish and other aquatic life. Turbid Particles also provide attachment places for other pollutants, notably metals and bacteria which makes the water contaminated and not suitable for drinking.