Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment
The present study was conducted to examine the accuracy and applicability of the hydrological models Soil and Water Assessment Tool (SWAT) and Hydrologic Engineering Center (HEC)- Hydrologic Modeling System (HMS) to simulate streamflows. Models combined with the ArcGIS interface have been used for h...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2021-11-01
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| Series: | Journal of Water and Climate Change |
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| Online Access: | http://jwcc.iwaponline.com/content/12/7/3005 |
| _version_ | 1818842898165137408 |
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| author | N. C. Sanjay Shekar D. C. Vinay |
| author_facet | N. C. Sanjay Shekar D. C. Vinay |
| author_sort | N. C. Sanjay Shekar |
| collection | DOAJ |
| description | The present study was conducted to examine the accuracy and applicability of the hydrological models Soil and Water Assessment Tool (SWAT) and Hydrologic Engineering Center (HEC)- Hydrologic Modeling System (HMS) to simulate streamflows. Models combined with the ArcGIS interface have been used for hydrological study in the humid tropical Hemavathi catchment (5,427 square kilometer). The critical focus of the streamflow analysis was to determine the efficiency of the models when the models were calibrated and optimized using observed flows in the simulation of streamflows. Daily weather gauge stations data were used as inputs for the models from the 2014–2020 period. Other data inputs required to run the models included land use/land cover (LU/LC) classes resulting from remote sensing satellite imagery, soil map and digital elevation model (DEM). For evaluating the model performance and calibration, daily stream discharge from the catchment outlet data were used. For the SWAT model calibration, available water holding capacity by soil (SOL_AWC), curve number (CN) and soil evaporation compensation factor (ESCO) are identified as the sensitive parameters. Initial abstraction (Ia) and lag time (Tlag) are the significant parameters identified for the HEC-HMS model calibration. The models were subsequently adjusted by autocalibration for 2014–2017 to minimize the variations in simulated and observed streamflow values at the catchment outlet (Akkihebbal). The hydrological models were validated for the 2018–2020 period by using the calibrated models. For evaluating the simulating daily streamflows during calibration and validation phases, performances of the models were conducted by using the Nash-Sutcliffe model efficiency (NSE) and coefficient of determination (R2). The SWAT model yielded high R2 and NSE values of 0.85 and 0.82 for daily streamflow comparisons for the catchment outlet at the validation time, suggesting that the SWAT model showed relatively good results compared to the HEC-HMS model. Also, under modified LU/LC and ungauged streamflow conditions, the calibrated models can be later used to simulate streamflows for future predictions. Overall, the SWAT model seems to have done well in streamflow analysis for hydrological studies. HIGHLIGHTS
The study's novelty is the comparative study of performances to simulate streamflow by using both HEC-HMS and SWAT hydrological models for the first time in the sub-humid tropical Hemavathi catchment.;
The study's scope focuses on streamflow analysis to determine the efficiency of the models when the models were calibrated and optimized using observed flows in the simulation of streamflows.; |
| first_indexed | 2024-12-19T04:49:17Z |
| format | Article |
| id | doaj.art-3d356e7db3cc4e0c97a4a4c0a797d1d1 |
| institution | Directory Open Access Journal |
| issn | 2040-2244 2408-9354 |
| language | English |
| last_indexed | 2024-12-19T04:49:17Z |
| publishDate | 2021-11-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water and Climate Change |
| spelling | doaj.art-3d356e7db3cc4e0c97a4a4c0a797d1d12022-12-21T20:35:24ZengIWA PublishingJournal of Water and Climate Change2040-22442408-93542021-11-011273005301710.2166/wcc.2021.072072Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchmentN. C. Sanjay Shekar0D. C. Vinay1 Department of Civil Engineering, JSS Academy of Technical Education, Bangalore 570060, Karnataka, India Department of Civil Engineering, P.E.S. Institute of Technology and Management, Shimoga 577201, Karnataka, India The present study was conducted to examine the accuracy and applicability of the hydrological models Soil and Water Assessment Tool (SWAT) and Hydrologic Engineering Center (HEC)- Hydrologic Modeling System (HMS) to simulate streamflows. Models combined with the ArcGIS interface have been used for hydrological study in the humid tropical Hemavathi catchment (5,427 square kilometer). The critical focus of the streamflow analysis was to determine the efficiency of the models when the models were calibrated and optimized using observed flows in the simulation of streamflows. Daily weather gauge stations data were used as inputs for the models from the 2014–2020 period. Other data inputs required to run the models included land use/land cover (LU/LC) classes resulting from remote sensing satellite imagery, soil map and digital elevation model (DEM). For evaluating the model performance and calibration, daily stream discharge from the catchment outlet data were used. For the SWAT model calibration, available water holding capacity by soil (SOL_AWC), curve number (CN) and soil evaporation compensation factor (ESCO) are identified as the sensitive parameters. Initial abstraction (Ia) and lag time (Tlag) are the significant parameters identified for the HEC-HMS model calibration. The models were subsequently adjusted by autocalibration for 2014–2017 to minimize the variations in simulated and observed streamflow values at the catchment outlet (Akkihebbal). The hydrological models were validated for the 2018–2020 period by using the calibrated models. For evaluating the simulating daily streamflows during calibration and validation phases, performances of the models were conducted by using the Nash-Sutcliffe model efficiency (NSE) and coefficient of determination (R2). The SWAT model yielded high R2 and NSE values of 0.85 and 0.82 for daily streamflow comparisons for the catchment outlet at the validation time, suggesting that the SWAT model showed relatively good results compared to the HEC-HMS model. Also, under modified LU/LC and ungauged streamflow conditions, the calibrated models can be later used to simulate streamflows for future predictions. Overall, the SWAT model seems to have done well in streamflow analysis for hydrological studies. HIGHLIGHTS The study's novelty is the comparative study of performances to simulate streamflow by using both HEC-HMS and SWAT hydrological models for the first time in the sub-humid tropical Hemavathi catchment.; The study's scope focuses on streamflow analysis to determine the efficiency of the models when the models were calibrated and optimized using observed flows in the simulation of streamflows.;http://jwcc.iwaponline.com/content/12/7/3005calibrationhydrological modelssensitivitysimulationstreamflowvalidation |
| spellingShingle | N. C. Sanjay Shekar D. C. Vinay Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment Journal of Water and Climate Change calibration hydrological models sensitivity simulation streamflow validation |
| title | Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment |
| title_full | Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment |
| title_fullStr | Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment |
| title_full_unstemmed | Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment |
| title_short | Performance of HEC-HMS and SWAT to simulate streamflow in the sub-humid tropical Hemavathi catchment |
| title_sort | performance of hec hms and swat to simulate streamflow in the sub humid tropical hemavathi catchment |
| topic | calibration hydrological models sensitivity simulation streamflow validation |
| url | http://jwcc.iwaponline.com/content/12/7/3005 |
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