Towards baseflow index characterisation at national scale in New Zealand

Singh, Shailesh Kumar; Pahlow, Markus; Booker, D. J.; Shankar, Ude; Chamorro, Alejandro

doi:10.1016/j.jhydrol.2018.11.025

Cited by 60 publications

(35 citation statements)

References 56 publications

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“…When performing a large-scale baseflow analysis over a territory, it is possible to extend calibrated parameters at gauged catchments to ungauged ones through regionalisa-tion models. Singh et al (2019) performed such a study over the entire territory of New Zealand. We decided to limit ourselves to gauged catchments for this work.…”

Section: Elements Of Comparison and Coupling Between Methodsmentioning

confidence: 99%

“…Figure 10 shows the graphical comparison of obtained BFI and τ values. Table 5 displays two statistical assessments that were performed after the split-sample test: correlation between values of BFI and τ and the non-parametric Kolmogorov-Smirnov test (Smirnov, 1939), in order to check the equality of distributions, i.e. the bias between series of values.…”

Section: Split-sample Test As a Stability Assessmentmentioning

confidence: 99%

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Hydrograph separation: an impartial parametrisation for an imperfect method

Pelletier

Andréassian

2020

Hydrol. Earth Syst. Sci.

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Abstract. This paper presents a new method for hydrograph separation. It is well-known that all hydrological methods aiming at separating streamflow into baseflow – its slow or delayed component – and quickflow – its non-delayed component – present large imperfections, and we do not claim to provide here a perfect solution. However, the method described here is at least (i) impartial in the determination of its two parameters (a quadratic reservoir capacity and a response time), (ii) coherent in time (as assessed by a split-sample test) and (iii) geologically coherent (an exhaustive validation on 1664 French catchments shows a good match with what we know of France's hydrogeology). With these characteristics, the method can be used to perform a general assessment of hydroclimatic memory of catchments. Last, an R package is provided to ensure reproducibility of the results presented.

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Section: Elements Of Comparison and Coupling Between Methodsmentioning

confidence: 99%

Section: Split-sample Test As a Stability Assessmentmentioning

confidence: 99%

Hydrograph separation: an impartial parametrisation for an imperfect method

Pelletier

Andréassian

2020

Hydrol. Earth Syst. Sci.

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show abstract

“…When performing a large-scale baseflow analysis over a territory, it is possible to extend calibrated parameters at gauged catchments to ungauged ones, through regionalization models. Singh et al (2019) performed such a study over the entire 30 territory of New Zealand. We decided to limit ourselves to gauged catchments for this work.…”

Section: Elements Of Comparison and Coupling Between Methodsmentioning

confidence: 99%

Hydrograph separation: an impartial parametrization for an imperfect method

Pelletier¹,

Andréassian²

2019

Preprint

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Abstract. This paper presents a new method for hydrograph separation. It is well-known that all hydrological methods aiming at separating streamflow into baseflow and quickflow present large imperfections, and we do not claim to provide here a perfect solution. However, the method described here is at least (i) impartial in the determination of its two parameters (a quadratic reservoir capacity and a response time), (ii) coherent in time (as assessed by a split-sample test) and (iii) geologically coherent (an exhaustive validation on 1,664 French catchments shows a good match with what we know of France's hydrogeology). Last, an R package is provided to ensure reproducibility of the results presented.

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“…The baseflow index represents the baseflow component of streamflow, which is critical for regulating seasonal distribution of river flows, and is associated with climatic and physiographic (e.g. soil type, geology, topography, and vegetation) characteristics of the basin (Beck et al 2013, Mohammed and Scholz 2018, Singh et al 2019. Baseflow, or the baseflow index, is crucial to develop appropriate water resources management strategies, such as aquatic ecosystem preservation, hydropower generation, and low-flow forecasting (Beck et al 2013, Singh et al 2019.…”

Section: Introductionmentioning

confidence: 99%

Towards a more consistent eco-hydrological modelling through multi-objective calibration: a case study in the Andean Vilcanota River basin, Peru

Fernández-Palomino

Hattermann

Krysanova

et al. 2020

Hydrological Sciences Journal

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Most hydrological studies rely on a model calibrated using discharge alone. However, judging the model reliability based on such calibration is problematic, as it does not guarantee the correct representation of internal hydrological processes. This study aims (a) to develop a comprehensive multi-objective calibration framework using remote sensing vegetation data and hydrological signatures (flow duration curve-FDC, and baseflow index) in addition to discharge, and (b) to apply this framework for calibration of the Soil and Water Assessment Tool (SWAT) in a typical Andean catchment. Overall, our calibration approach outperformed traditional discharge-based and FDC signature-based calibration strategies in terms of vegetation, streamflow, and flow partitioning simulation. New hydrological insights for the region are the following: baseflow is the main component of the streamflow sustaining the long dry-season flow, and pasture areas offer higher water yield and baseflow than other land-cover types. The proposed approach could be used in other data-scarce regions with complex topography.

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Towards baseflow index characterisation at national scale in New Zealand

Cited by 60 publications

References 56 publications

Hydrograph separation: an impartial parametrisation for an imperfect method

Hydrograph separation: an impartial parametrisation for an imperfect method

Hydrograph separation: an impartial parametrization for an imperfect method

Towards a more consistent eco-hydrological modelling through multi-objective calibration: a case study in the Andean Vilcanota River basin, Peru

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