Evaluation of morphometric parameters and hypsometric curve of Arkavathy river basin using RS and GIS techniques

Abstract

Water availability and water scarcity in a river basin are influenced by the geomorphological processes occurring within a river basin. Therefore, quantitative evaluation of the river basin shape provides a crucial lead in assessment of the impact of geomorphological processes on the hydrology of the basin. Arkavathy river basin has been selected for the present study. The basin with an annual average rainfall of 874.87 mm is a persistent water scarce basin located in Cauvery river basin in south India. The basin 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 in the basin, an attempt has been made in the present study to investigate and understand the basin morphometry and derivation of hypsometric curve of Arkavathy river basin using remote sensing (RS) and geographic information system (GIS) techniques. Quantitative evaluation of basin morphometry has been made, and the impact of basin morphometry on the peak runoff and flooding in the basin has been assessed. The basin hypsometric curve has aided in assessment of the erosion status of the basin and its impact on the risk of sedimentation on water bodies. The morphometric parameters and hypsometric curve are then analysed to investigate the potential impact of the basin morphometry on the water availability and water scarcity afflicting the basin.

The time of concentration application in studies around the world: a review

“…Azmat et al (2016) used two models, with different potential climate change scenarios, to assess the prediction variations for future water availability in a Pakistan's basin. Harsha et al (2020) studied the derivation of morphological parameters and hypsometric curves for the Arkavathy River Basin in India and investigated the potential impact on water availability and water scarcity affecting the basin. Frêne et al (2019) analyzed the changes in streamflow regulation, defined as the capacity of catchments to infiltrate and store water in soil, and 169;170;190;219;247;267;295;334;343;363;364;408;432;483;560;628;649;671;694;698;701;716;720;727;733;741;760;768;876;58;33;31;84;85;133;734;738;788;802;810;861;959;976 India 108;198;204;275;281;356;379;390;476;…”

Evaluation of Carto Sat Dem-Derived Morphometric Parameters - A Case Study on Arkavathi Watershed of Karnataka, India

“…7 Elongated 0.7-0.8 Less Elongated 0.8-0.9 Oval >0. 9 Circular R e For the entire watershed is 0.45 however in the 8 sub watersheds the value varies from 0.41 to 0.82. It demonstrates that the Arkavathi watershed has an elongated shape.…”

“…Stream order of Arkavathi watershed is characterize by dendritic drainage pattern and branching of tributaries flowing in many directions and almost any angles. The dendritic pattern indicates the presence of uniform resistance of rock to the drainage in the basin(Harsha et al, 2020). The Arkavathi watershed is allocated as seven order stream.…”

Caracterización morfométrica de la cuenca del Salado Bajo, Región de Atacama, Chile

“…(3) El valor del área relativa (integral hipsométrica) demuestra el estado de desarrollo de la cuenca; valores superiores al 60% indican desequilibrio en el funcionamiento dinámico de la cuenca en su etapa de juventud, valores entre el 40 -45%, representan equilibrio en su etapa de madurez y valores inferiores a 30% implican etapa de senectud (Harsha et al, 2020).…”