SEDIMENTATION STUDY OF SRI RAMA SAGAR RESERVOIR USING SATELLITE IMAGERIES

Abstract

It is imperative to emphasise the need for accurately estimating and then taking suitable steps for checking the sediment deposition in reservoirs. Sedimentation process is a complex phenomenon, which depends mainly on the catchment characteristics and hydrological conditions. Since, these factors vary from reservoir to reservoir, it is difficult for estimate the probable rate of sediment deposition and its location in reservoirs at the design stage. Further, it has been found that the probable rate of sediment estimation based on available inadequate ground data are usually for less than the actual rate of sediment deposition as determined by hydrographic surveys. As Remote Sensing Techniques have been found to be very effective in supplying adequate and uptodate data bout catchment characteristics as well as water spread areas of water bodies. These new techniques are now-a-days employed in many developed countries for carrying out .Reservoir Sedimentation studies very successfully, as compared to the conventional methods..