International Association for Engineering and Management Education
Abstract
Morphometric analyses are the suitable tool for hydrological investigations in developing and management of land and surface water resources of a larger region. Survey of India (SoI) toposheet, Remote Sensing (RS) Satellite data, Geographic Information Systems (GIS) and Global Positioning System (GPS) are integrated in mapping of stream order, drainage, slope and other related features of a river basin. The present aim is an attempt to map the morphometric parameters and hydrologic behavior in Precambrian rocks of Dharwar Craton and Northern Granulite Terrains in South India. The drainage network is delivered on geo-coded FCC of IRS-1D, PAN+LISS-III satellite image and merged on SoI toposheets of 1:50,000 scale. The values of linear, aerial and relief variables are calculated and accounted by GIS analysis. The variation in stream length ratio changes due to change in slope, lithology, landforms and topography, while the variation in the values of bifurcation ratio describes the control of lithology/structure and morphology on the network development. These help to delineate the geometry of the basin, drainage network and texture. The final results highlight the applications of geomatics technique in mapping, management and development of surface water resources on hard rock terrain in Southern tip of Karnataka
