TR-164 : Sedimentation of reservoir using remote sensing techniques (Tungabhadra)

Abstract

Sedimentation of reservoirs is a natural phenomena. For the operation of any reservoir, it is required to find out the reservoir sedimentation rate going on in the reservoir. The reservoir surveys using conventional methods are time consuming and expensive. With the introduction of remote sensing techniques in the recent past , it has become very cheap and convenient to quantify sedimentation in a reservoir and to assess its distribution pattern.

For the evaluation of sedimentation rate, Tungabhadra reservoir in Krishna basin has been selected for the present study. This study has been carried out using IRS-1A LISS I images. Digital analysis have been performed to obtain the information on the location and extent of sediment distribution in water spread area of the reservoir. ILWIS system has been used for the purpose. Density slicing approach has been employed to obtain various turbidity levels.