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ISSN 2063-5346
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Hydrogeomorphological Assessment of Kanakapura Watershed Using Geo-Spatial Technology

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Hema HC1, Nagendra P2, Chandrashekharappa Agasnalli3, Govindiah S4
» doi: 10.48047/ecb/2023.12.10.290

Abstract

The study aimed to explore the hydro geomorphological aspects of the Kanakapura watershed using a range of geospatial data sources and tools. Specifically, the study integrated the data on geology, geomorphology, and lineament information derived from a sentinel satellite image and digital elevation models (DEM) using Arc GIS software to analyse and visualize these layers. The objective attained to delineate the groundwater prospects zone by identifying areas with higher groundwater potential. In the study area lineaments were classified into minor, intermediate, and major based on their length. Lineaments were further divided into various portions based on lineament density, fluctuating between extremely low to extremely high. The study found that the very low and low lineament density zones were the most common throughout the watershed. The results suggest that the north western and south eastern regions of the research area had higher lineament concentrations and superior groundwater potential compared to the upper middle basin and north-northeast region. The integrated subsurface water potential zone map revealed that the valley fills and discreetly disintegrated pediplains were the most promising zones for groundwater potential. On the other hand, shallowly weathered pediplains, Pediment Inselberg complex, Pediments, Denudational, residual hills, and Inselberg were identified as zones with modest to very poor groundwater potential.

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