Morphometric Analysis of Bhesra Kalan Micro-watershed using Remote Sensing and GIS Technique

The present study has been carried out to analyse morphometric characteristics of Bhesra Kalan micro-watershed of Udaipur (Rajasthan) by using remote sensing and GIS technique. The area of the micro-watershed is 1060 ha. Bhuvan DEM data of 30 m spatial resolution and topographical maps have been utilised to analyse stream network and determine geomorphological parameters (linear, areal and relief aspects) using in the GIS environment. The drainage network of the research area came out to be dendritic and the 4^th order stream observed as trunk order. The bifurcation ratio (3.24) indicates an undistorted drainage network and low structural disturbance in area. Form factor (0.227), elongation ratio (0.538) and circulatory ratio (0.276) shows elongated shape of watershed. Drainage density (2.626 km km)implies permeable sub-surface material with sparse vegetation, mountainousrelief and coarse drainage. The value of constant of channel maintenance (0.381 km² km⁻¹) shows steep slope, high surface runoff and low permeability in the watershed. The low value of relief ratio (0.052)characterises less resistant rocks in area. The ruggedness number (0.922) indicates the steep slope of the watershed. The findings of this study provide complete information about the watershed's geomorphological characteristics, which may help in watershed planning and management and explore groundwater potential.