Publisher

UBTUBT

Journal J-PEN Borneo : Jurnal Ilmu PertanianJ-PEN Borneo : Jurnal Ilmu Pertanian Abstract

In the hydrological cycle, the rain falling on the ground surface in a watershed (DAS) then undergoes a process of evaporation, infiltration, and surface runoff. This conversion of rain into runoff surface can be used as a basis for calculating the discharge of the design flood. Analyzing flood design is one of the calculations in water resource planning. River flow discharge is an indicator of the output of a watershed system, especially in the process of converting rainfall into a surface flow. Flood discharge in a watershed is generally expressed as a hydrograph. One method that can be used to analyze the conversion of rain into flow is the HEC-HMS software. The purpose of this research is to determine the design of flood discharge and flow hydrograph of Tojo River using HEC-HMS software. In this article, the HEC-HMS model components used to analyze hydrographs are SCS CN for the runoff volume model and SCS UH for the direct runoff model. From the results of modeling using HEC-HMS, the peak flow discharge of the Tojo watershed in Central Sulawesi are 133.8 m3/s for a 2-year design flood, 239.8 m3/s for a 5-year design flood, 329.5 m3/s for 10-year design flood, 442.5 m3/s for 20-year design flood, 589.8 m3/s for 50-year design flood and 727.1 m3/s for 100-year design flood. Furthermore, the results of this study can be used for flood control planning and other water resource planning.

Conclusion

Based on the modeling results using HEC-HMS, the peak flow discharge of the Tojo watershed in Central Sulawesi Province is 133.8 m3/s for the 2-year design flood, 239.8 m3/s for the 5-year design flood, 329.5 m3/s for the 10-year design flood, 442.5 m3/s for the 20-year design flood, 589.8 m3/s for the 50-year design flood and 727.1 m3/s for the 100-year design flood.The peak of the 2- and 5-year return period flood occurs at hour 12, while the peak of the 10- to 100-year return period flood occurs at hour 11.These findings can be utilized for effective flood control planning and broader water resource management strategies.

Future Research

Penelitian lanjutan dapat difokuskan pada analisis sensitivitas parameter model HEC-HMS, seperti parameter Curve Number (CN) dan waktu konsentrasi, untuk memahami pengaruhnya terhadap akurasi prediksi debit banjir. Hal ini penting untuk meningkatkan keandalan model dalam berbagai kondisi lahan dan iklim. Selain itu, studi komparatif antara model HEC-HMS dengan model hidrologi lainnya, seperti SWAT atau Modélisation Hydrologique Régionale (MHR), perlu dilakukan untuk mengevaluasi kinerja masing-masing model dalam mensimulasikan aliran sungai di DAS Tojo. Penelitian ini akan memberikan wawasan tentang keunggulan dan kelemahan setiap model, serta membantu memilih model yang paling sesuai untuk aplikasi tertentu. Terakhir, penelitian lebih lanjut dapat mengintegrasikan data citra satelit dan data LiDAR untuk meningkatkan resolusi spasial dan akurasi data input model, seperti data penggunaan lahan, tutupan lahan, dan elevasi. Peningkatan data input ini diharapkan dapat menghasilkan simulasi aliran sungai yang lebih realistis dan akurat, sehingga mendukung pengambilan keputusan yang lebih baik dalam pengelolaan sumber daya air.

References

1. Analisis Debit Rencana Tukad Unda Bagian Hilir Menggunakan HEC-HMS | Jurnal Teknik Pengairan: Journal... doi.org/10.21776/ub.pengairan.2021.012.02.04Analisis Debit Rencana Tukad Unda Bagian Hilir Menggunakan HEC HMS Jurnal Teknik Pengairan Journal doi 10 21776 ub pengairan 2021 012 02 04
2. Evaluasi Satellite Precipitation Product (GSMaP, CHIRPS, dan IMERG) di Kabupaten Lampung Selatan | Journal... journal.itera.ac.id/index.php/jsat/article/view/702Evaluasi Satellite Precipitation Product GSMaP CHIRPS dan IMERG di Kabupaten Lampung Selatan Journal journal itera ac index php jsat article view 702
3. Fractal Characteristic Analysis of Watershed as Variable of Synthetic Unit Hydrograph Model. fractal... doi.org/10.2174/1874149501610010706Fractal Characteristic Analysis of Watershed as Variable of Synthetic Unit Hydrograph Model fractal doi 10 2174 1874149501610010706

Metadata

File size	539.76 KB
Pages	9
DMCA	Report