Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece)
<p>SWAT (Soil and Water Assessment Tool) is a continuous-time, semi-distributed, river basin model widely used to evaluate the effects of alternative management decisions on water resources. This study examines the application of the SWAT model for streamflow simulation in an experimental basi...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-02-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | https://hess.copernicus.org/articles/27/917/2023/hess-27-917-2023.pdf |
| _version_ | 1797892990529699840 |
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| author | E. Koltsida N. Mamassis A. Kallioras |
| author_facet | E. Koltsida N. Mamassis A. Kallioras |
| author_sort | E. Koltsida |
| collection | DOAJ |
| description | <p>SWAT (Soil and Water Assessment Tool) is a continuous-time, semi-distributed, river basin model widely used to evaluate the effects of alternative management decisions on water resources. This study examines the application of the SWAT model for streamflow simulation in an experimental basin with mixed-land-use characteristics (i.e., urban/peri-urban) using daily and hourly rainfall observations. The main objective of the present study was to investigate the influence of rainfall resolution on model performance to analyze the mechanisms governing surface runoff at the catchment scale. The model was calibrated for 2018 and validated for 2019 using the Sequential Uncertainty Fitting (SUFI-2) algorithm in the SWAT-CUP program. Daily surface runoff was estimated using the Curve Number method, and hourly surface runoff was estimated using the Green–Ampt and Mein–Larson method. A sensitivity analysis conducted in this study showed that the parameters related to groundwater flow were more sensitive for daily time intervals, and channel-routing parameters were more influential for hourly time intervals. Model performance statistics and graphical techniques indicated that the daily model performed better than the subdaily model (daily model, with NSE <span class="inline-formula">=</span> 0.86, <span class="inline-formula"><i>R</i><sup>2</sup></span> <span class="inline-formula">=</span> 0.87, and PBIAS <span class="inline-formula">=</span> 4.2 %; subdaily model with NSE <span class="inline-formula">=</span> 0.6, <span class="inline-formula"><i>R</i><sup>2</sup></span> <span class="inline-formula">=</span> 0.63, and PBIAS <span class="inline-formula">=</span> 11.7 %). The Curve Number method produced higher discharge peaks than the Green–Ampt and Mein–Larson method and better estimated the observed values. Overall, the general agreement between observations and simulations in both models suggests that the SWAT model appears to be a reliable tool to predict discharge in a mixed-land-use basin with high complexity and spatial distribution of input data.</p> |
| first_indexed | 2024-04-10T06:46:51Z |
| format | Article |
| id | doaj.art-017b94bd8b1348288c7656a81eb09aa4 |
| institution | Directory Open Access Journal |
| issn | 1027-5606 1607-7938 |
| language | English |
| last_indexed | 2024-04-10T06:46:51Z |
| publishDate | 2023-02-01 |
| publisher | Copernicus Publications |
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| series | Hydrology and Earth System Sciences |
| spelling | doaj.art-017b94bd8b1348288c7656a81eb09aa42023-02-28T12:34:06ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382023-02-012791793110.5194/hess-27-917-2023Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece)E. Koltsida0N. Mamassis1A. Kallioras2Laboratory of Engineering Geology and Hydrogeology, School of Mining and Metallurgical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 157 80 Zografou, Athens, GreeceLaboratory of Hydrology and Water Resources Development, School of Civil Engineering, National Technical University of Athens, Heroon Polytechniou 9, 157 80 Zografou, Athens, GreeceLaboratory of Engineering Geology and Hydrogeology, School of Mining and Metallurgical Engineering, National Technical University of Athens, Heroon Polytechniou 9, 157 80 Zografou, Athens, Greece<p>SWAT (Soil and Water Assessment Tool) is a continuous-time, semi-distributed, river basin model widely used to evaluate the effects of alternative management decisions on water resources. This study examines the application of the SWAT model for streamflow simulation in an experimental basin with mixed-land-use characteristics (i.e., urban/peri-urban) using daily and hourly rainfall observations. The main objective of the present study was to investigate the influence of rainfall resolution on model performance to analyze the mechanisms governing surface runoff at the catchment scale. The model was calibrated for 2018 and validated for 2019 using the Sequential Uncertainty Fitting (SUFI-2) algorithm in the SWAT-CUP program. Daily surface runoff was estimated using the Curve Number method, and hourly surface runoff was estimated using the Green–Ampt and Mein–Larson method. A sensitivity analysis conducted in this study showed that the parameters related to groundwater flow were more sensitive for daily time intervals, and channel-routing parameters were more influential for hourly time intervals. Model performance statistics and graphical techniques indicated that the daily model performed better than the subdaily model (daily model, with NSE <span class="inline-formula">=</span> 0.86, <span class="inline-formula"><i>R</i><sup>2</sup></span> <span class="inline-formula">=</span> 0.87, and PBIAS <span class="inline-formula">=</span> 4.2 %; subdaily model with NSE <span class="inline-formula">=</span> 0.6, <span class="inline-formula"><i>R</i><sup>2</sup></span> <span class="inline-formula">=</span> 0.63, and PBIAS <span class="inline-formula">=</span> 11.7 %). The Curve Number method produced higher discharge peaks than the Green–Ampt and Mein–Larson method and better estimated the observed values. Overall, the general agreement between observations and simulations in both models suggests that the SWAT model appears to be a reliable tool to predict discharge in a mixed-land-use basin with high complexity and spatial distribution of input data.</p>https://hess.copernicus.org/articles/27/917/2023/hess-27-917-2023.pdf |
| spellingShingle | E. Koltsida N. Mamassis A. Kallioras Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece) Hydrology and Earth System Sciences |
| title | Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece) |
| title_full | Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece) |
| title_fullStr | Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece) |
| title_full_unstemmed | Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece) |
| title_short | Hydrological modeling using the Soil and Water Assessment Tool in urban and peri-urban environments: the case of Kifisos experimental subbasin (Athens, Greece) |
| title_sort | hydrological modeling using the soil and water assessment tool in urban and peri urban environments the case of kifisos experimental subbasin athens greece |
| url | https://hess.copernicus.org/articles/27/917/2023/hess-27-917-2023.pdf |
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