Evaluating uncertainty of the soil and water assessment tool (SWAT) model in the upper cauvery basin, Karnataka, India

dc.contributor.authorKumar Raju, B.C.
dc.contributor.authorNandagiri, L.
dc.date.accessioned2026-02-05T09:33:54Z
dc.date.issued2015
dc.description.abstractQuantification of uncertainties associated with hydrological models are essential for accurate assessment of water balance components and optimal planning and management of water and land resources at basin-scale. The present study was taken up to evaluate the uncertainties associated with the Soil and Water Assessment Tool (SWAT) model using for two different techniques: i) Generalized Likelihood Uncertainty Estimation (GLUE) and ii) Sequential Uncertainty Fitting (SUFI-2) techniques. The study was carried out in the Upper Cauvery River basin (36,682 km2) located in the humid to sub-humid region of Karnataka State, India. The calibration of the model was carried out using the Nash – Sutcliffe (NS) coefficient as the objective function for both GLUE and SUFI-2 techniques. The P-factor was 67% and 71% of observed streamflow data bracketed by the 95% prediction uncertainty (95PPU) for GLUE and SUFI-2 respectively during calibration period and corresponding values of 54% and 61% during validation period. Overall results indicate the applicability of SWAT model with moderate levels of uncertainty in large basins located in the humid tropics. The calibrated SWAT model can be used for assessment of water balance components and land use management scenarios in the Upper Cauvery Basin. © 2015 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
dc.identifier.citationInternational Journal of Earth Sciences and Engineering, 2015, 8, 4, pp. 1675-1681
dc.identifier.issn9745904
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/26366
dc.publisherCAFET INNOVA Technical Society 1-2-18/103, Mohini Mansion, Gagan Mahal Road, Domalguda, Hyderabad 500029
dc.subjectCalibration
dc.subjectGlues
dc.subjectGluing
dc.subjectLand use
dc.subjectWater management
dc.subjectGeneralized likelihood uncertainty estimation
dc.subjectPrediction uncertainty
dc.subjectSequential uncertainty fittings
dc.subjectSoil and water assessment tool
dc.subjectSUFI-2
dc.subjectSWAT
dc.subjectUpper cauvery basin
dc.subjectWater balance components
dc.subjectUncertainty analysis
dc.subjectassessment method
dc.subjecthydrological modeling
dc.subjectsoil analysis
dc.subjectstreamflow
dc.subjectuncertainty analysis
dc.subjectwater budget
dc.subjectCauvery Basin
dc.subjectIndia
dc.subjectKarnataka
dc.titleEvaluating uncertainty of the soil and water assessment tool (SWAT) model in the upper cauvery basin, Karnataka, India

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