Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria
Abstract This study evaluates the performance of the Soil and Water Assessment Tool (SWAT) hydrological model in simulating daily river flow and quantifying flow components within the Isser catchment, upstream of the Koudiat Acerdoune dam in Algeria. Model parameters were optimized using the SWAT-CU...
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Sociedade Brasileira de Meteorologia
2025-08-01
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| author | L. Chebihi M. Habi A. Elouissi |
| author_facet | L. Chebihi M. Habi A. Elouissi |
| author_sort | L. Chebihi |
| collection | DOAJ |
| description | Abstract This study evaluates the performance of the Soil and Water Assessment Tool (SWAT) hydrological model in simulating daily river flow and quantifying flow components within the Isser catchment, upstream of the Koudiat Acerdoune dam in Algeria. Model parameters were optimized using the SWAT-CUP optimization method and the SUFI-2 algorithm. The model was calibrated (2002-2012) and validated (2013-2018) against observed daily streamflow data, following a three-year warm-up period (1999-2001). Sensitivity analysis identified key parameters influencing streamflow, including groundwater delay, baseflow processes, channel hydraulic conductivity, and surface roughness. The SWAT model demonstrated strong performance, achieving satisfactory to very good performance metrics (e.g., R2 Cal/Val = 0.86/0.82; NSE Cal/Val = 0.81/0.74), indicating its ability to accurately simulate daily streamflow in the Isser watershed. Water balance analysis revealed that actual evapotranspiration accounted for 51% of precipitation. Shallow aquifer recharge constituted a major loss at 28%, while total water yield represented the remaining 21%. Furthermore, the model estimated that surface runoff accounted for approximately 47.4% of the total water yield, lateral flow for 11.6%, while baseflow contributed the remaining 41%. These findings demonstrate the SWAT model's capability to effectively represent the hydrological processes governing the Isser watershed. The study underscores the importance of considering both surface and subsurface water dynamics to guide sustainable water resource planning in semi-arid regions. |
| format | Article |
| id | doaj-art-e56e41f2a7a8440b98815957e5537094 |
| institution | Kabale University |
| issn | 1982-4351 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Sociedade Brasileira de Meteorologia |
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| series | Revista Brasileira de Meteorologia |
| spelling | doaj-art-e56e41f2a7a8440b98815957e55370942025-08-20T03:44:17ZengSociedade Brasileira de MeteorologiaRevista Brasileira de Meteorologia1982-43512025-08-014010.1590/0102-778640250001Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, AlgeriaL. Chebihihttps://orcid.org/0009-0008-9810-7805M. HabiA. ElouissiAbstract This study evaluates the performance of the Soil and Water Assessment Tool (SWAT) hydrological model in simulating daily river flow and quantifying flow components within the Isser catchment, upstream of the Koudiat Acerdoune dam in Algeria. Model parameters were optimized using the SWAT-CUP optimization method and the SUFI-2 algorithm. The model was calibrated (2002-2012) and validated (2013-2018) against observed daily streamflow data, following a three-year warm-up period (1999-2001). Sensitivity analysis identified key parameters influencing streamflow, including groundwater delay, baseflow processes, channel hydraulic conductivity, and surface roughness. The SWAT model demonstrated strong performance, achieving satisfactory to very good performance metrics (e.g., R2 Cal/Val = 0.86/0.82; NSE Cal/Val = 0.81/0.74), indicating its ability to accurately simulate daily streamflow in the Isser watershed. Water balance analysis revealed that actual evapotranspiration accounted for 51% of precipitation. Shallow aquifer recharge constituted a major loss at 28%, while total water yield represented the remaining 21%. Furthermore, the model estimated that surface runoff accounted for approximately 47.4% of the total water yield, lateral flow for 11.6%, while baseflow contributed the remaining 41%. These findings demonstrate the SWAT model's capability to effectively represent the hydrological processes governing the Isser watershed. The study underscores the importance of considering both surface and subsurface water dynamics to guide sustainable water resource planning in semi-arid regions.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862025000100212&lng=en&tlng=enhydrological modelingSWATcalibrationvalidationKoudiat AcerdouneIsser watershed |
| spellingShingle | L. Chebihi M. Habi A. Elouissi Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria Revista Brasileira de Meteorologia hydrological modeling SWAT calibration validation Koudiat Acerdoune Isser watershed |
| title | Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria |
| title_full | Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria |
| title_fullStr | Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria |
| title_full_unstemmed | Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria |
| title_short | Application of the SWAT Hydrological Model for the Catchment Area of the Koudiat Acerdoune Dam on the Isser River, Algeria |
| title_sort | application of the swat hydrological model for the catchment area of the koudiat acerdoune dam on the isser river algeria |
| topic | hydrological modeling SWAT calibration validation Koudiat Acerdoune Isser watershed |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862025000100212&lng=en&tlng=en |
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