Hydromorphogeological Study of Karawan Watershed using GIS and Remote Sensing Techniques

Resourcesat-1 LISS-IV Mx satellite imagery was used for detailed geomorphological and hydrogeological study of Karawan watershed. For morphometric analysis, ASTER data was used for preparing digital elevation model and GIS was used in evaluation of linear, areal and relief aspects of morphometric parameters. Watershed boundary, flow accumulation, flow direction, stream ordering; and contour, slope-aspect, hillshade have been prepared using ArcHydroTool; SurfaceTool in ArcGIS-10 software. Different thematic maps i.e. geological, geomorphological, lineament density, groundwater favourable zone, and drainage density have been prepared by using ArcGIS software. Authors have computed more than 85 morphometric parameter of all aspects. Based on all morphometric parameters analysis; that the erosional development of the area by the streams has progressed well beyond maturity and that lithology has had an influence in the drainage development. Author was undertaken to evaluate the groundwater prospective zones because the groundwater resources in the area have not been fully demoralized. Different hydromorphogeological units have been differentiated based on image interpretation. The hydromorphogeological units such as structural landforms, structural hills (vindhyan sediments), denudational hills (volcanic), deccan plateau, and fluvial landforms were identified and appropriate field confirmations were made. The geomorphic units such as lineaments, faults, factures, and pediplains were identified under structural landforms. The deeply and moderately weathered buried pediplains are the potential zones for groundwater targeting.