PEMODELAN DEBIT SUNGAI MENGGUNAKAN SOIL AND WATER ASSESSMENT TOOL DI SUBDAS MAMASA

Irlan Irlan; Widyanti Utami A; Rosmaeni Rosmaeni; Andi Khairil A. Samsu; Daud Irundu; Emban Ibnurusyd Mas'ud

doi:10.46918/eboni.v5i2.2106

Irlan Irlan Universitas Sulawesi Barat https://orcid.org/0000-0002-9489-9517
Widyanti Utami A Universitas Sulawesi Barat https://orcid.org/0009-0006-6844-3176
Rosmaeni Rosmaeni Universitas Sulawesi Barat https://orcid.org/0009-0001-0222-0280
Andi Khairil A. Samsu Universitas Muslim Maros https://orcid.org/0000-0002-0523-8953
Daud Irundu Universitas Sulawesi Barat
Emban Ibnurusyd Mas'ud Universitas Hasanuddin https://orcid.org/0000-0003-3120-6629

DOI: https://doi.org/10.46918/eboni.v5i2.2106

Abstract

ABSTRACT

Issues related to watershed have received primary attention in the past few decades. The hydrological conditions of the watershed area are considered crucial as a source of life. In efforts to achieve sustainable watershed management, understanding the complex hydrological dynamics is very important. The objective of this research is to simulate river discharge using the Soil and Water Assessment Tools (SWAT) model. This study was conducted in the Mamasa Sub-watershed area. The results show that the river discharge in the Mamasa Sub-watershed has increased as it approaches the outlet (downstream) through the accumulation of discharge in larger order rivers. The Mamasa Sub-watershed also experiences a trend of increasing average annual discharge at a rate of 0.74 m3/s per year. Improvement in the discharge simulation results was achieved through a calibration process using 11 parameters. The calibration results indicate that the calibrated discharge has a higher R² value compared to the initial simulation discharge, showing that the model calibration successfully improved the quality of the expected discharge results to reach 79.50 percent. However, the calibration results still have a low R² value, influenced by the selection of appropriate parameters and accurate observational data.

Keywords: Modeling, River discharge, SWAT, Watershed

References

Ainunisa, D., Halik, G., & Widiarti, W. Y. (2020). Pemodelan Perubahan Tataguna Lahan Terhadap Debit Banjir DAS Tanggul, Jember Menggunakan Model SWAT (Soil and Water Assessment Tool). Rekayasa Sipil, 14(2), 154–161
Al Khoury, I., Boithias, L., & Labat, D. (2023). A Review of the Application of the Soil and Water Assessment Tool (SWAT) in Karst Watersheds. Water, 15(5), 1–50
Aloui, S., Mazzoni, A., Elomri, A., Aouissi, J., Boufekane, A., & Zghibi, A. (2023). A review of Soil and Water Assessment Tool (SWAT) studies of Mediterranean catchments: Applications, feasibility, and future directions. J Journal of Environmental Management, 326, 1–20
Andini, F. Y., Dasanto, B. D., & Santikayasa, I. P. (2023). Respon Model HBV dan Model Tangki Terhadap Estimasi Debit Aliran Di DAS Bogowonto, Jawa Tengah. Jurnal Sumber Daya Air, 19(2), 84–95
de Oliveira Serrão, E. A., Silva, M. T., Ferreira, T. R., da Silva, V. d. P. R., de Sousa, F. d. S., de Lima, A. M. M., et al. (2020). Land use change scenarios and their effects on hydropower energy in the Amazon. Science of the Total Environment, 744, 1-17
Gholami, A., Roshan, M. H., Shahedi, K., Vafakhah, M., Solaymani, K. J. J. o. W., & Development, L. (2016). Hydrological stream flow modeling in the Talar catchment (central section of the Alborz Mountains, north of Iran): Parameterization and uncertainty analysis using SWAT-CUP. Journal of Water Land Development, 30(1), 57–69
Isra, N., Arsyad, U., & Chairuddin, Z. (2023). Sedimentation analysis using SWAT model (soil and water assessment tool) in Mamasa Sub-Watershed. Paper presented at the IOP Conference Series: Earth and Environmental Science, 1–9.
Loukika, K. N., Keesara, V. R., Buri, E. S., & Sridhar, V. (2022). Predicting the Effects of Land Use Land Cover and Climate Change on Munneru River Basin Using CA-Markov and Soil and Water Assessment Tool. Sustainability, 14(9), 5000
Narendra, B. H., Siregar, C. A., Dharmawan, I. W. S., Sukmana, A., Pratiwi, Pramono, I. B., et al. (2021). A Review on Sustainability of Watershed Management in Indonesia. Sustainability, 13(19), 1–29
Nugraheni, C. T., Pawitan, H., Purwanto, Y. J., & Ridwansyah, I. (2019). Neraca air Situ Cikaret dan Situ Kabantenan di Kabupaten Bogor menggunakan pemodelan hidrologi SWAT. Limnotek-Perairan Darat Tropis di Indonesia, 26(2), 89–102
Pambudi, A. S. (2019). Watershed management in Indonesia: A regulation, institution, and policy review. Jurnal Perencanaan Pembangunan: The Indonesian Journal of Development Planning, 3(2), 185–202
Sao, D., Kato, T., Tu, L. H., Thouk, P., Fitriyah, A., & Oeurng, C. (2020). Evaluation of Different Objective Functions Used in the SUFI-2 Calibration Process of SWAT-CUP on Water Balance Analysis: A Case Study of the Pursat River Basin, Cambodia. 12(10), 1–22
Sutrisno, S., & Saputra, F. S. (2018). Studi Penerapan Metode Mock dan Statistik untuk Menghitung Debit Andalan PLTA Bakaru Kabupaten Pinrang. Teknik Hidro, 11(2), 38–47
Tejaswini, V., & Sathian, K. (2018). Calibration and validation of swat model for Kunthipuzha basin using SUFI-2 algorithm. Int J Curr Microbiol Appl Sci, 7(1), 2162–2172
Wang, Y., Jiang, R., Xie, J., Zhao, Y., Yan, D., & Yang, S. (2019). Soil and water assessment tool (SWAT) model: A systemic review. J Journal of Coastal Research, 93(SI), 22–30