Effect of watershed subdivision on simulation of water balance components

Tripathi, M. P.; Raghuwanshi, N. S.; Rao, Ganti Prasada

doi:10.1002/hyp.5927

Cited by 85 publications

(42 citation statements)

References 19 publications

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“…Very limited studies have been conducted to evaluate water balance components. Tripathi et al (2006) used SWAT to investigate the effect of watershed subdivision upon various components of water balance on a distributed scale and found obvious variations of evapotranspiration, percolation, and soil water content with change in subdivision pattern, even though there was little influence on annual runoff values. Their research has substantially increased our understanding of water balance distribution on a spatial scale.…”

Section: Published By Copernicus Publications On Behalf Of the Europementioning

confidence: 99%

“…These studies include the Soil and Water Assessment Tool (SWAT) model (Tripathi et al, 2006;Muleta et al, 2007;Kumar and Merwade, 2009), MUSIC (Elliott et al, 2009), BTOPMC (Ao et al, 2003), the Storm Water Management Model (SWMM) (Ghosh and Hellweger, 2011), and the Hydrologic Modeling System (HEC-HMS) (Chen et al, 2011;Cleveland et al, 2009). These studies have investigated how watershed aggregation…”

Section: Introductionmentioning

confidence: 99%

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The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

Zhang

Wang

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. In this paper, we use the Hydrologic Modeling System (HEC-HMS) to simulate two flood events to investigate the effect of watershed subdivision in terms of performance, the calibrated parameter values, the description of hydrologic processes, and the subsequent interpretation of water balance components. We use Stage IV hourly NEXRAD precipitation as the meteorological input for ten model configurations with variable sub-basin sizes. Model parameters are automatically optimized to fit the observed data. The strategy is implemented in Clear Creek Watershed (CCW), which is located in the upper Mississippi River basin. Results show that most of the calibrated parameter values are sensitive to the basin partition scheme and that the relative relevance of physical processes, described by the model, change depending on watershed subdivision. In particular, our results show that parameters derived from different model implementations attribute losses in the system to completely different physical phenomena without a notable effect on the model's performance. Our work adds to the body of evidence demonstrating that automatically calibrated parameters in hydrological models can lead to an incorrect prescription of the internal dynamics of runoff production and transport. Furthermore, it demonstrates that model implementation adds a new dimension to the problem of non-uniqueness in hydrological models.

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Section: Published By Copernicus Publications On Behalf Of the Europementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

Zhang

Wang

et al. 2013

Hydrol. Earth Syst. Sci.

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“…Many studies have investigated the impact of the resolution of DEM, soil and land use data on the SWAT simulations (Chaplot 2005;Dixon and Earl 2009). Research has also been devoted to examine the impact of catchment subdivisions on the SWAT simulations (Jha et al 2004;Tripathi et al 2006). The studies on evaluating the impact of climatic data input on SWAT simulations (discussed below) are gaining increased attention, given the fact that climatic data are a major driver of hydrological and other processes simulated by the model.…”

Section: Introductionmentioning

confidence: 99%

Understanding Hydrological Variability for Improved Water Management in the Semi-Arid Karkheh Basin, Iran

Masih¹

2011

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“…The study takes into account the effect that the SWAT model setup and model parameterization has on the simulation of discharge and NO For the SWAT model setup we used the ArcSWAT plugin (Version2012.10_1.14; (Winchell et al, 2015)) together with the process simulations and the resulting model outputs (Jha et al, 2004;Momm et al, 2017;Tripathi et al, 2006). Therefore,…”

Section: Model Setup Parameter Selection and Identification Of Non-umentioning

confidence: 99%

A comprehensive sensitivity and uncertainty analysis for discharge and nitrate-nitrogen loads involving multiple discrete model inputs under future changing conditions

Schürz¹,

Hollosi²,

Matulla³

et al. 2018

Preprint

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Abstract. Environmental modeling studies aim to infer the impacts on environmental variables that are caused by natural and human-induced changes in environmental systems. Changes in environmental systems are typically implemented as discrete scenarios in environmental models to simulate environmental variables under changing conditions. The scenario development of a model input usually involves several data sources and perhaps other models, that are potential sources of uncertainty. The setup and the parametrization of the implemented environmental model are additional sources of uncertainty for the simulation 5 of environmental variables. Yet, to draw well-informed conclusions from the model simulations it is essential to identify the dominant sources of uncertainty.In two Austrian impact studies the eco-hydrological model Soil and Water Assessment Tool (SWAT) was applied to simulate discharge and nitrate-nitrogen (NO In both case studies we employed global sensitivity analysis (GSA) to identify the impact of the scenario inputs, the model 15 setup and the parametrization on the simulation of discharge and NO − 3 -N loads. We accompanied the GSA with a visual analysis of the simulation outputs and their associated uncertainties that resulted from the simulations of the 7000 SWAT model combinations. We present visualizations of the results of the GSA and the simulation uncertainty bands that proved to be powerful diagnostic tools in this study. Based on the GSA we identified climate change and the model parametrization to be the most sensitive model inputs for the simulation of discharge and NO − 3 -N loads in both case studies. In contrast, the impact of the model setup on the simulation of discharge and NO − 3 -N loads was low and the changes in land use and point source emissions were found to have the least impact on the simulated discharge and NO − 3 -N loads. Additionally, the visual analysis of the uncertainty bands illustrated that the precipitation of the climate scenarios dominated the changes in simulation outputs, rather than changes in air temperature 5 in both case studies.

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Effect of watershed subdivision on simulation of water balance components

Cited by 85 publications

References 19 publications

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

The effect of watershed scale on HEC-HMS calibrated parameters: a case study in the Clear Creek watershed in Iowa, US

Understanding Hydrological Variability for Improved Water Management in the Semi-Arid Karkheh Basin, Iran

A comprehensive sensitivity and uncertainty analysis for discharge and nitrate-nitrogen loads involving multiple discrete model inputs under future changing conditions

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