MORPHOMETRIC ANALYSIS OF THE GAI RIVER BASIN, NE HIMALAYA, INDIA.

  • Department of Geology, Dimoria College, Khetri.
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Morphometric analysis is refers as the quantitative evaluation of form characteristics of the earth surface and any landform unit. The quantitative analysis of the drainage morphometric system is vital to understand the hydrological and environmental interaction and its processes of an area. Geographical information system (GIS) has emerged as an efficient tool in delineation of drainage pattern and ground water potential and its planning. GIS and image processing techniques can be employed for the identification of morphological features and analysing properties of basin. In the present study Landsat-8 and Sentinal-2 image along with Cartosat DEM and Survey of India Toposheets are used. The Gai River basin is a sixth order basin, having 687 stream segments, encompassing an area of 148.30 km2 with a mean bifurcation ratio of 3.68. The drainage density ranges from 0 stream per km to 5.99 streams per km with most of the high density area concentrating in the upper reach of the river, suggesting a lithological control coupled with climatic conditions. The average slope and the relative relief ranging between 0o to 68.63o per km and 8.04 m/km2 to 506.26 m/km2 respectively are directly controlled by the lithology of the basin as it shows higher value for hard rocks of Dafla Formation and lower values for non-compact conglomerate of Kimin Formation.

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[Sorat Konwar. (2017); MORPHOMETRIC ANALYSIS OF THE GAI RIVER BASIN, NE HIMALAYA, INDIA. Int. J. of Adv. Res. 5 (Jun). 1610-1616] (ISSN 2320-5407). www.journalijar.com

Sorat Konwar
Department of Geology, Dimoria College

DOI:

Article DOI: 10.21474/IJAR01/4578      
DOI URL: https://dx.doi.org/10.21474/IJAR01/4578

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