Effect of Single and Multisite Calibration Techniques on the Parameter Estimation, Performance, and Output of a SWAT Model of a Spatially Heterogeneous Catchment

Leta, Olkeba Tolessa; Griensven, Ann van; Bauwens, Willy

doi:10.1061/(asce)he.1943-5584.0001471

Cited by 46 publications

(48 citation statements)

References 49 publications

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“…These results follow the findings of Leta et al (2017) who observed that SC out-performed the SSC technique in their study. Comparing the streamflow hydrographs obtained using the three techniques, it can be observed that; (1) with the SSC technique peak flows were overestimated at the outlet and at Katoa during validation upstream (Figs.…”

Section: Comparison Of Different Calibration Methodssupporting

confidence: 91%

“…Migliaccio and Chaubey (2007) recommend the use of SC technique for calibrating nested sub-basins with hydrologic connections. Contrary to the SC technique used by Wi et al (2015), Shrestha et al (2016) and Leta et al (2017), whereby the calibrated and optimized parameter set obtained in the upstream gauge is fixed while calibrating the downstream counterpart, that approach was not adopted in this study because of the hydrological connection between upstream and downstream hydrometric stations. Note that the same number of parameters and their ranges were used to initiate each calibration.…”

Section: Model Sensitivity Analysis Calibration Validation and Uncementioning

confidence: 99%

“…They can also be used to investigate the impacts of land use change, climate change and agricultural activities at a catchment scale (Wu and Chen 2013;Athira and Sudheer 2015;Zhou et al 2015;Shi et al 2016), making them a useful tool to help decision makers better understand environmental problems and design appropriate mitigation strategies. Given the current technological advancement in the acquisition and storage of hydro-meteorological data, the use of spatially distributed, physically based CHMs to enhance management decisions at basin scale is receiving increasing attention from the scientific community (Golmohammadi et al 2014;Leta et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…However, calibration of CHMs to determine a suitable set of parameter values that can describe the hydrology of the catchment is not always an easy task . Studies have shown that the parameter set used to calibrate CHMs against flow measured only at the catchment outlet (single-site calibration (SSC)) may not produce similar results at other internal hydrometric stations within the catchment (Wang et al 2012;Wi et al 2015;Leta et al 2017). Furthermore, several researchers have demonstrated the effectiveness of calibrating CHMs with data from different parts of the catchment using simultaneous multi-site calibration (SMSC) over SSC (Wang et al 2012;Wi et al 2015;Chaibou Begou et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Nkiaka

Nawaz

Lovett

2017

Stoch Environ Res Risk Assess

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Understanding hydrological processes at catchment scale through the use of hydrological model parameters is essential for enhancing water resource management. Given the difficulty of using lump parameters to calibrate distributed catchment hydrological models in spatially heterogeneous catchments, a multiple calibration technique was adopted to enhance model calibration in this study. Different calibration techniques were used to calibrate the Soil and Water Assessment Tool (SWAT) model at different locations along the Logone river channel. These were: single-site calibration (SSC); sequential calibration (SC); and simultaneous multi-site calibration (SMSC). Results indicate that it is possible to reveal differences in hydrological behavior between the upstream and downstream parts of the catchment using different parameter values. Using all calibration techniques, model performance indicators were mostly above the minimum threshold of 0.60 and 0.65 for Nash Sutcliff Efficiency (NSE) and coefficient of determination (R 2 ) respectively, at both daily and monthly time-steps. Model uncertainty analysis showed that more than 60% of observed streamflow values were bracketed within the 95% prediction uncertainty (95PPU) band after calibration and validation. Furthermore, results indicated that the SC technique outperformed the other two methods (SSC and SMSC). It was also observed that although the SMSC technique uses streamflow data from all gauging stations during calibration and validation, thereby taking into account the catchment spatial variability, the choice of each calibration method will depend on the application and spatial scale of implementation of the modelling results in the catchment.

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Section: Comparison Of Different Calibration Methodssupporting

confidence: 91%

Section: Model Sensitivity Analysis Calibration Validation and Uncementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Nkiaka

Nawaz

Lovett

2017

Stoch Environ Res Risk Assess

View full text Add to dashboard Cite

show abstract

“…This is particularly problematic for large systems where parameters estimated for some parts of the watershed may be unrealistic for other parts. For example, Leta et al () assessed the impact of calibrating at a single site, at multiple sites with constant parameter values, and at multiple sites with varying parameter values for a 1,162 km 2 watershed in Belgium. Their results indicated using different parameter values among different regions improved calibration results.…”

Section: Introductionmentioning

confidence: 99%

Modeling Flow, Nutrient, and Sediment Delivery from a Large International Watershed Using a Field‐Scale SWAT Model

Dagnew¹,

Scavia

Wang

et al. 2019

J American Water Resour Assoc

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A large international watershed, the St. Clair‐Detroit River System, containing both extensive urban and agricultural areas, was modeled using the Soil and Water Assessment Tool (SWAT) model. The watershed, located in southeastern Michigan, United States, and southwestern Ontario, Canada, encompasses the St. Clair, Clinton, Detroit (DT), Sydenham (SY), Upper, and Lower Thames subwatersheds. The SWAT input data and model resolution (i.e., hydrologic response units, HRUs), were established to mimic farm boundaries, the first time this has been done for a watershed of this size. The model was calibrated (2007–2015) and validated (2001–2006) with a mix of manual and automatic methods at six locations for flow and water quality at various time scales. The model was evaluated using Nash–Sutcliffe efficiency and percent bias and was used to explore major water quality issues. We showed the importance of allowing key parameters to vary among subwatersheds to improve goodness of fit, and the resulting parameters were consistent with subwatershed characteristics. Agricultural sources in the Thames and SY subwatersheds and point sources from DT subwatershed were major contributors of phosphorus. Spatial distribution of phosphorus yields at HRU and subbasin levels identified locations for potential management targeting for both point and nonpoint sources and revealed that in some subwatersheds nonpoint sources are dominated by urban sources.

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The Review of Potential Applications and Modification Approaches of SWAT for Efficient Environmental Management, an Engineering Approach

Ashraf,

Ahmad,

Khan

et al. 2024

Climate Change, Vulnerabilities and Adaptation

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Effect of Single and Multisite Calibration Techniques on the Parameter Estimation, Performance, and Output of a SWAT Model of a Spatially Heterogeneous Catchment

Cited by 46 publications

References 49 publications

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Modeling Flow, Nutrient, and Sediment Delivery from a Large International Watershed Using a Field‐Scale SWAT Model

The Review of Potential Applications and Modification Approaches of SWAT for Efficient Environmental Management, an Engineering Approach

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