Comparative study of different Digital Elevation Models

The morphometric analysis represents an approximately simple approach to describe the hydrogeological behavior, soil physical properties, landform processes, and erosion characteristics hence, provides an aggregate insight into the hydrologic behavior of watersheds. The morphometric analysis is done with the analysis of linear parameter, areal parameter and relief parameters of the basin. The measurement of morphometric parameters is the order of streams, stream length, stream length ratio, mean stream length, bifurcation ratio, mean bifurcation ratio, relief ratio, drainage density, form factor, stream frequency, circulatory ratio, elongation ratio, relief ratio , aspect, slope, relief basin etc. The present study is focus to check the better result of different DEM generated from SRTM (30 m), ASTER (30 m), and CARTOSAT(30 m). This study deals with four types of DEMs.The DEMs have been generated for the panzara river basin from this mission and compare the results between them. Morphometric parameters is extracted from different DEM using automated methods to understand the accuracy and morphometric analysis was performed and a comparison of the results of these DEMs was done.