Comparision of Hypsometric Parameters of Bangalore Urban Watersheds using Remote Sensing and GIS Techniques

Amrutha Rani H. R.*, Ravikumar A. S.**
*-** Department of Civil Engineering, University of Visvesvaraya College of Engineering (UVCE), Bangalore University, Jnanabharathi, Bengaluru, India.
Periodicity:April - June'2025
DOI : https://doi.org/10.26634/jce.15.2.22015

Abstract

Hypsometric analysis is considered an effective tool to understand the stages of geomorphic status and geological development of river basins and for delineation of erosion proneness of watersheds. Bangalore urban has been subjected to rapid urbanization, due to which there is an increased water demand over a period of time. Hence, to tackle the growing water scarcity and reoccurrence of droughts and floods, an attempt has been made in the present study to investigate and understand the morphometry and derivation of hypsometric curves and hypsometric integrals of the watersheds of the Bangalore urban area. Bengaluru Urban is a densely populated city that geographically lies between 12°49'5” N to 13°8'32” N and 77°27'29” E to 77°47'2” E. In the Bangalore urban area, KC Valley and Hebbal flow towards the southeast direction, and Vrishabhavathi Valley flows towards the southwest direction and divides Bengaluru into three distinct and separate drainage zones. The SRTM-DEM data has been used for hypsometric analysis purposes. The downloaded DEM tiles are mosaiced in the ArcMap version 10.4 environment. Using the Arc Spatial Analysis tool, hypsometric analysis has been carried out and generated the hypsometric curves and hypsometric integrals on a watershed-wise basis. The hypsometric curves, which are concave upwards at higher elevations and convex downwards at low elevations, indicate that KC Valley, Vrishabhavathi Valley, and Hebbal Valley are approaching the mature stage and will have a lower rate of erosion and be characterized by concavity upwards at high elevations, having HI values of 0.45, 0.54, and 0.48, respectively. The findings will help in the recommendation of appropriate mitigation measures.

Keywords

Hypsometric Analysis, Remote Sensing, GIS, Hypsometric Integral, Watershed, Geological Status.

How to Cite this Article?

Rani, H. R. A., and Ravikumar, A. S. (2025). Comparision of Hypsometric Parameters of Bangalore Urban Watersheds using Remote Sensing and GIS Techniques. i-manager’s Journal on Civil Engineering, 15(2), 1-8. https://doi.org/10.26634/jce.15.2.22015

References

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