Geomorphological study of Atagad Basin, Chamoli District, Uttarakhand: GIS and Remote Sensing approaches

Geomorphology is the science of evolution of landforms in terms of its lithology, structure, basin geometry and other morphometric factors. The main object is to map the land system into further various Landform unit and features through geomorphic approach in Atagad Basin. This study has been carried out to create the geomorphologic parts of Atagad Catchment. Geomorphologic maps were prepared using Satellite images (Landsat ETM+,TM, MSS,SRTM)and digital SOI topographic sheet of the region; this was further updated during post field work. Digital Elevation Model (DEM) generation based on topographical sheet was prepared for creating relief map, slope map and erosion intensity zone as well as drainage map with the help of topographic sheets, the generation of various thematic layers has also been developed. Land Use/Cover over the study area has been analyzed for the time periods of 2008. Various theme maps (erosion intensity, LST) were generated for GIS study analysis is done to analyze the instability and morphology of the catchment area.