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Evaluation of Morphometric Characteristics by using GIS in Kollur Watershed of Coastal Karnataka, India

Chadaga, Mohandas and Udayashankar, H N and Rao, Prakash B and Bhat, Gangadhar H (2011) Evaluation of Morphometric Characteristics by using GIS in Kollur Watershed of Coastal Karnataka, India. International Journal of Earth Sciences and Engineering, 4 (7). ISSN 0974-5904

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Abstract

Analysis of different Morphometric and Geomorphic characteristics will help us to understand the different hydrologic processes taking place in a watershed. In this study,some of these watershed characteristics are evaluated by using the RS and GIS techniques and approaches. Kollur watershed of Coastal Karnataka, India is considered for this purpose. LISS-III imageries of IRS-1CjlD series and Survey Of India (SOl) topographical maps (Toposheets) are used for the purpose. Lineament map of the study area, updated with IRS imagery is used in this analysis. Longitudinal profiles are plotted and analysed for some of the rivers. It has been observed that many rivers in the Kollur basin are structurally controlled which is evident from the break-in-slope of their lohgitudinal sections. The cross sections of the rivers are typically 'V' shaped valleys. Many areas in region are highly sloping with elevation of more than 1200m. Longitudinal sections plotted and slope maps derived from the DEM exhibit steep sloping characteristics in initial regions i.e., near the foothills. The computed values of the morphometric parameters and map derived geomorphic features of the study area indicate that characteristics like slope, soil type and land use patterns are the main influencing parameters towards runoff process.

Item Type: Article
Uncontrolled Keywords: Remote Sensing, Geographic Information System, Morphometric and Geomorphic characteristics.
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 01 Feb 2014 07:07
Last Modified: 01 Feb 2014 07:07
URI: http://eprints.manipal.edu/id/eprint/138591

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