Author(s): Ganesh D. Kale, Riteshkumar H. Shobhavat, Amit Kumar Sharma
Linked Author(s): Ganesh D. Kale
Keywords: SRS technique, reservoir sedimentation estimation, capacity of reservoir
Abstract: Efficient reservoir management calls for periodic assessment of its capacity. Remote sensing (SRS) technique offers acquisition of data over a long time span and broad spectral range and thus it is better than conventional methods. Earlier studies have been using the commercially available remote sensing data for the estimation of reservoir sedimentation. Cost of the imageries is significant financial element in the estimation of reservoir sedimentation using SRS technique. So, in the present study the reservoir sedimentation of Ukai reservoir located in Surat district of Gujarat State of India, is estimated using SRS technique with free landsat data, for the water years 2003 and 2010 to identify potential of free landsat data in reservoir sedimentation estimation. The daily water level data of reservoir and free Landsat data are used in the study. The reservoir sedimentation estimation by SRS technique for the water year 2003 is used to compare with previous hydrographic survey carried out at study area. Capacities of reservoir at water surface elevations above 98. 1 m estimated by hydrographic survey (water year 2003) are more than corresponding original reservoir capacities while that of estimated by SRS method are lower than the original reservoir capacities. The loss of reservoir capacity between water surface elevations 91. 1 m to 104. 7 m for the period 1972 to 2010 is 470. 4 MCM and corresponding loss in percentage is 9. 1%. So, present study has shown that with use of free Landsat imageries and SRS technique the reservoir sedimentation can be estimated with fair accuracy and less cost
Year: 2017