Drainage Evaluation of Doddhalla Sub-basin, Karnataka, India Using GIS
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 3
Abstract
Morphometric analysis of Doddhalla Sub-basin, which is a tributary of River Malaprabha, Karnataka, India was carried out to study its drainage network and characterictics. Sub-basin is spread over an area of 293 km2 with highest stream order of fifth order. Strahler’s pattern of ordering the stream order and number was adopted. Large number of first order streams indicates the intensity of permeability and infiltration. The pattern of the drainage is dendritic to sub-dendritic. The average bifurcation ratio value 4.73, indicating no dominant structural control but geomorphic. From the values of form factor (0.42), elongation ratio (0.41) and circulatory ratio (0.53) it was concluded the shape of basin to be elongated. Drainage density value of 1.09 km2 suggests, coarse texture and highly permeable subsurface. Stream frequency value suggests the study area to be having relatively low relief, high infiltration and dense vegetation cover. Thus in the present study GIS applications are found to be very competent and helpful in drainage evaluation.
Authors and Affiliations
Sreenivasa A, Ajaykumar N. Asode, Shilpa Murgod
Keywords
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