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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/hess-2017-536
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
06 Sep 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Hydrology and Earth System Sciences (HESS).
Spatio-temporal assessment of annual water-balance model for Upper Ganga Basin
Anoop Kumar Shukla1, Shray Pathak1, Chandra Shekhar Prasad Ojha1, Ana Mijic2, and Rahul Dev Garg1 1Department of Civil Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India
2Department of Civil and Environmental Engineering, Imperial College London, London, UK
Abstract. The Upper Ganga Basin, Uttarakhand, India has high hydropower potential and plays an important role in development of state economy. Thus, knowledge about water yield is of paramount importance to this region. The paper deals with use of contemporary water yield estimation models, such as the distributed model (InVEST), Lumped Zhang model and their validation to identify the most suited one for water yield estimation in this region. Earlier, while utilizing these models, attempts were made to consider a single value of some important model parameters which in fact show a variation at a pixel level scale. Therefore, in this study, the pixel level computations are performed to assess and ascertain their need in model applications. To validate the findings, the observed sub-basin discharge data is analyzed with the computed water yield for four decades, i.e. 1980, 1990, 2001 and 2015. The results obtained are in good agreement with the water yields obtained at pixel scale.

Citation: Shukla, A. K., Pathak, S., Ojha, C. S. P., Mijic, A., and Garg, R. D.: Spatio-temporal assessment of annual water-balance model for Upper Ganga Basin, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2017-536, in review, 2017.
Anoop Kumar Shukla et al.
Anoop Kumar Shukla et al.
Anoop Kumar Shukla et al.

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Short summary
In this study, we draw a comparative evaluation of water yield using two approaches Lumped Zhang model and Pixel based approach. Even in pixel level computations experiments are made with existing models of some of the involved parameters. The study indicates not only the suitability of pixel based computations but also clarifies the suitable model of some of the parameters to be used with pixel based computations to obtain greater results.
In this study, we draw a comparative evaluation of water yield using two approaches Lumped Zhang...
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