Morphometric Analysis Using Geo spatial Techniques in Brahmanavellamla Watershed, Nalgonda mandal and Nalgonda district, Telangana state, India.
Author(s):
Rasamalla Bhagyalakshmi, I. Panduranga Reddy, Cherukuri Paramesh
Keywords:
Morphometric, Remote Sensing & GIS, Drainage, Stream Order and Brahmanavellamla watershed, Nalgonda.
Abstract
The study area falls in Nalgonda Mandal, Nalgonda district in Telangana state covering an area of 142 Sq.km. The entire area is falling under Brahmanavellamla watershed drainage system. Morphometric analysis is carried out using IRS P6-LISS IV Satellite imagery (2017) and thematic layer prepared by using GIS software. Morphometric analysis is important in any hydrological investigation and it is inevitable in development and management of drainage basin. The development of Morphometric techniques was a major advance in the qualitative and quantitative description of the geometry of the drainage basins and its network which helps in characterizing the drainage network. The geomorphological properties which are important from the hydrological studies point of view include the linear, aerial and relief aspect of the watershed. In the present study a Morphometric analysis of Brahmanavellamla watershed drainage area has been carried out using remote sensing and geospatial techniques in GIS. This technique is found relevant for the extraction of river basin and its Drainage network. The extracted drainage network was classified according to Strahler’s system of classification and it reveals that the terrain exhibits dendritic to sub-dendritic drainage pattern. The various linear parameters (Stream order, Stream number, Stream length, stream length ratio, Bifurcation ratio, Drainage density, Texture ratio, Stream frequency) and shape factors (Compactness coefficient, Circularity ratio, Elongation ratio, Form factor) of the drainage area were computed. Hence, it is concluded that GIS techniques proved to be a competent tool in Morphometric analysis.
Article Details
Unique Paper ID: 154145

Publication Volume & Issue: Volume 8, Issue 10

Page(s): 237 - 244
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