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Quantification of groundwater recharge and its spatio-temporal variability in the Ganga river basin

Dharpure, JK and Goswami, A and Patel, A and Kulkarni, AV (2021) Quantification of groundwater recharge and its spatio-temporal variability in the Ganga river basin. In: Geocarto International .

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Official URL: https://doi.org/10.1080/10106049.2021.1914748

Abstract

The reliable quantification of Groundwater Recharge (GR) is essential for efficient and sustainable groundwater resource practices. In this study, the spatio-temporal GR over the Ganga River Basin (GRB) was calculated using six different methods during 2003�2016. The Gravity Recovery and Climate Experiment (GRACE) and water fluxes were utilized as inputs to the GR methods. The GR of individual methods were validated with in-situ measurements, indicating a higher correlation ranged from 0.64 to 0.77. Overall, the GR trend shows an insignificant declining trend with a mean of �0.09 cm yr�1 for all selected methods. The spatial distribution of GR indicates large heterogeneity in the GRB with a higher recharge in the eastern than the western part. The uncertainty of each method and sensitivity of water fluxes were analyzed. Further, the possible causes of GR change through hydro-climatic variables as well as anthropogenic activities related to irrigation and urbanization were evaluated. © 2021 Informa UK Limited, trading as Taylor & Francis Group.

Item Type: Journal Article
Publication: Geocarto International
Publisher: Taylor and Francis Ltd.
Additional Information: The copyright for this article belongs to Taylor and Francis Ltd.
Department/Centre: Division of Mechanical Sciences > Divecha Centre for Climate Change
Date Deposited: 26 Jul 2021 10:46
Last Modified: 26 Jul 2021 10:46
URI: http://eprints.iisc.ac.in/id/eprint/68965

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