Drainage Morphometric Analysis of a Challakere Watershed Using Remote Sensing and Geographical Information System

The morphometric study of a basin in the context of morphological and hydrological parameters has been emphasized with the aid of geomatic tools. The conjugate of geological, geomorphological, hydrological, and fluvial parameters is analyzed to obtain the relationship between linear, relief, and aerial aspects of the Challakere watershed in Chitradurga district, South India. The drainage morphometric parameter is evaluated by DEM data in ArcGIS 10.3 version. The river Vedavathi and its tributaries flow on an undulated hard rock terrain comprising a chain of parallel mountains and narrow valleys. In the current study, drainage morphometric evaluation is carried out to a 4th order stream of the Vedavathi river of Challakere basin, its average elevation is 500 m MSL, and the drainage area of the basin is 1830 km² (Table 1). Basin exhibits sub dendritic to dendritic drainage patterns. The stream order of the basin is exclusively driven by the influence of physiographic and lithology of the area. From the result, the basin comprises an irregularly increasing stream order, whereas the fifth order consists of 164 drainage networks, and the overall length of the stream is 701 km.