Browsing by Author "Anjanay Kumar"

Now showing 1 - 3 of 3

Flood modeling using GIS-based analytical hierarchy process in Gandak river basin of Indian territory
(Springer Science and Business Media B.V., 2025) Sunil Kumar Patel; Parthapratim Ghosh; Dev Sen Gupta; Anjanay Kumar
Flood events in recent years have increased as a major catastrophic event and India is listed among top nations in the globe. The Gandak river basin in Indian Territory puts heavy flood situations every year and the present study was done to classify it into flood susceptible zones using analytical hierarchical process (AHP). The AHP was implemented through a series of steps, including the multicollinearity test, creation of a pairwise comparison matrix, the assignment of weights, consistency check, sensitivity analysis and weighted overlay analysis using ArcGIS V.10.5 platform. The Consistency Ratio (CR) values showed perfect consistency when calculated for each thematic parameter as the values were below 0.1 or 10% showing high acceptance for AHP model to run. To attain dependable precision, the study incorporated a substantial number of thematic layers (N = 12 for FSZ) and conducted multicollinearity analysis of these variables to address issues related to high correlation among them using SPSS. For the multicollinearity check, the tolerance value should be greater than 0.1, and the percentage of variance inflation factor (VIF) should be less than 10 for the accuracy evaluation of this test. The AHP was successfully employed in the present area and flood susceptibility zone (FSZ) map generated revealed elevation and slope were dominant factors affecting FSZ map. The map removal sensitivity analysis and single parameter sensitivity analysis described the importance of elevation and slope in the final FSZ map. The high flood susceptibility region mostly lies in the southern part of the study area and percent cover under high and very high is around 44.19% reflecting regions suffering extreme conditions of flood during monsoon season. Very low and low flood zones are situated in northern part of the basin which clearly indicates that slope and elevation are the predominant factors controlling the flood zones. The AUC/ ROC curve value was 83.60%. The current study finds its greater utilization for environmentalists, farmers, agricultural engineers and researchers to carry out sustainable development, and most importantly would help government bodies to regulate remedial measures. © The Author(s), under exclusive licence to Springer Nature B.V. 2025.
GIS-based morphometric analysis with emphasis on hypsometric appraisal for sub-watershed prioritization: a case study of the Shyamari River Basin, Central India
(Springer Science and Business Media Deutschland GmbH, 2023) Prinsi Singh; Kuldeep Prakash; Anjanay Kumar; Ajeet Kumar Kannaujiya; Akash Deep; Tanuja Mohanty
Morphological attributes of a river basin are associated with the basin's shape, profile, network, and relief. Global environmental calamities have prompted a comprehensive assessment of river morphology and watershed management for sustainable development strategies. The Shyamari, a significant tributary of the Ken River in the Bundelkhand region, lies in the Yamuna sub-catchment of the Ganga basin. The Shyamari River Basin (SRB) traverses varied lithological terrain via the Bundelkhand Craton, Bijawar Group, Vindhyan Supergroup, and Deccan Traps. The present work focuses on the morphometric and hypsometric assessment of the SRB using remote sensing and GIS techniques. The work includes hydro-geomorphological investigations, such as erosion risk assessments, lineament studies, drought susceptibility analysis, and the inspection of sediment transport indexes, stream power indexes, and topographic wetness indexes. Morphometric and hypsometric studies show that the SRB exhibits a late youth stage of geomorphic evolution, with high discharge, limited infiltration, and high erosional capacity. Lineaments and drainage orientations demonstrate deformation control over the drainage network. Lineaments act as secondary conduits in hard rock terrain to enhance groundwater potential. Erosion risk and hydro-geomorphological assessment reveal that sub-watersheds in the northern part of the basin require more attention. The study provides valuable information that will be helpful in river basin management in the Bundelkhand region. © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
Soil Erosion Susceptibility in the Gopad River Basin: An Interactive Geospatial and Statistical Approach for Effective Sub-Watershed Prioritisation
(John Wiley and Sons Ltd, 2025) Anjanay Kumar; Kuldeep Prakash; Prinsi Singh; S. Dasaratha Kumar; Sunil Kumar Patel
Rivers are dynamic hydro-geomorphological systems that shape landscapes, transfer energy, and sustain ecosystems. Although the Gopad River Basin (GRB) is a significant tributary of the Son River in central India, it remains largely underexplored, even as it faces growing pressures from soil erosion, land degradation, and climate variability. Addressing this gap, the present study aims to assess and prioritise erosion-prone sub-watersheds to support sustainable watershed management. An integrated methodology combining morphometric analysis, hypsometric assessment, and principal component analysis-weighted sum approach (PCA-WSA) was employed. Essential morphometric parameters, including drainage density, form factor, bifurcation ratio, and rho coefficient have been recognised as significant indicators of erosion risk. Findings reveal that sub-watersheds 1, 4, 6, 7, 8, 9, 10, 12, 13, and 16 are critically susceptible to erosion, necessitating urgent soil and water conservation measures. Other sub-watersheds exhibit moderate to low risk, reflecting spatial heterogeneity in erosion vulnerability. The study offers a novel, data-driven, and spatially explicit framework that integrates geomorphometric parameters with statistical optimisation, moving beyond conventional single-method approaches. This contributes significantly to regional watershed planning by enabling targeted resource allocation, evidence-based prioritisation, and improved erosion mitigation strategies, while also providing a transferable framework for comparable basins. © 2025 John Wiley & Sons Ltd.