Geo-Spatial Techniques to Analyze Fluvial Morphometry of River Kangshabati and Some Associated Features, in Selected Parts of Bankura District, West Bengal

Abstract

Quantification of drainage network with special reference to climatic conditions, geo-tectonic uniqueness, lithological configuration, geomorphic characteristic features etc. It extends conspicuous evidences of drainage evolution, hydro-geomorphic specialties and denudational features of the area over which the drainage does flow along with its tributaries as well as distributaries. The present paper will throe focus on the satellite-image based analysis of digital elevation model that entails the drainage basin of river Kangshabati in selected portion of the western forested track of Bankura District. Along with the morphometric techniques, the impacts of fluvial Morphometry over the hydro-geomorphicfeatures have also been studied in the current paper. Drainage density, dissection Index, study of slope features and nature of relief have been corroborated with all minute details in this research work. The shape features show that the drainage basin is extended towards north and south and the highest fourth order stream Kangshabati has drained the entire region. Lots of fingertip as well as the First order channels are developed over the area and after their joining with each other, a good number of second order streams have also been originated. Gradually with the increase in order, the occurrence of higher order streams has got reduced gradually. With chromatic variations, the higher-magnitude areas with special regards to drainage density, relief feature, gradient characteristics have been delineated clearly and the result of such high occurrences have been explained as well with respect to their connections to topography. In the analysis with adequate inputs from the Geographical information system, the zones of high, moderate and low regions of drainage density, relative relief, average slope, dissection index etc. have been manifested through the map layouts and some prospective studies are also done over here from the present situation of the drainage and relief.