Morphometric Analysis of Erramasupalle Vanka Sub-Watershed, YSR District, Andhra Pradesh, India

IJEP 43(9): 807-814 : Vol. 43 Issue. 9 (September 2023)

R. Siddi Raju1, S. Siddi Raju2 and G. Sudarsana Raju1*

1. Yogi Vemana University, Department of Geology, Kadapa – 516 005, Andhra Pradesh, India
2. Indira Gandhi National Tribal University, Department of Geology, Anuppur, Amarkantak – 484 887, Madhya Pradesh, India


Morphometric analysis of watersheds is a primary step for understanding and planning water resources, mainly in arid and semi-arid areas. The present study is morphometric analysis of the Erramasupalle Vanka sub-watershed, YSR district, Andhra Pradesh, India. Geologically, the study area is covered by the rocks of the Cuddapah super group and Kurnool group of the Proterozoic age. In this area, rainfall is very scanty, hence, drought is very common in the summer season. The drainage was classified based on Strhler’s principle, it reveals that the sub-watershed exhibits parallel to sub-parallel drainage pattern. It is a Vth order sub-watershed and lower-order streams are mostly dominating the basin with an average drainage density of 1.99 km/km2. The sub-watershed area is spread over about 154.36 km2 and forms a part of Buggavanka river. The slope is mainly controlled by various physiographic conditions and geological erosion cycles. The elongation ratio is 0.58 representing the sub-watershed has an abundantly elongated with high to moderate elevation and steep slopes due to structural disturbances. In this study, linear, areal and relief aspects were analyzed through high-resolution satellite imagery linear self scanning sensor (LISS IV) in the ArcGIS environment. 


Morphometric analysis, Linear self scanning sensor IV, Remore sensing, Geographical information system


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