Hydrographic Analysis of Oyo Hilir River Flood using SCS-CN Method with HEC-HMS and HEC-RAS 6.6 Integrated Modeling
DOI:
https://doi.org/10.70609/g-tech.v10i2.9280Kata Kunci:
Flood, Lower Oyo River, SCS-CN, HEC-HMS, HEC-RASAbstrak
The Oyo Hilir River in Bantul Regency is an area with a high level of flood vulnerability due to rainfall intensity, changes in land use, and river morphological characteristics. Repeated flooding events have an impact on community activities in downstream areas. This study aims to analyze the flood discharge of the Oyo Hilir River design and map the distribution and area of the flood-affected area based on the classification of inundation depth. The research was conducted on the Oyo Watershed (DAS) with a focus on the downstream segment of the river along ±14 km, starting from the confluence of the Oyo–Urang River to the Oyo–Opak River. The data used included rainfall for the period 2004–2023, Digital Elevation Model (DEM), and data on the characteristics of supporting watersheds. Hydrological analysis was carried out through rainfall frequency analysis using AProb and flood hydrographic modeling using the Soil Conservation Service–Curve Number (SCS-CN) method on HEC-HMS, which was then used as an input for two-dimensional hydraulic modeling using HEC-RAS version 6.6. The results showed that the peak discharge of the flood at the 2-year return period was 307.6 m³/second with a peak time at the 16th hour. The largest affected area is in Selopamioro Village, Imogiri District, with an inundation area of 323.62 ha dominated by high flood depth (>3 m). The results of this study are expected to be the basis for flood mitigation planning and sustainable management of the Oyo Hilir River.
Referensi
Al-Hussein, A. A. M., Khan, S., Ncibi, K., Hamdi, N., & Hamed, Y. (2022). Flood Analysis Using HEC-RAS and HEC-HMS : A Case Study of Khazir River (Middle East—Northern Iraq). Water, 14, 3779.
Ciptadi, R., Nurdin, F. A., Murdiana, F., Sari, N. I., & Khatimah, H. (2024). Pengembangan Model Prediksi Banjir Berdasarkan Akurasi Inflow dan Outflow Pada Bendungan Bili Bili. Jurnal Teknik Sumber Daya Air, 4(2), 201–210.
DetikJogja. (2024). Update dampak Sungai Oya di Semin meluap, talut ambrol, padi terendam.
DetikNews. (2017). Banjir di Bantul akibatkan rumah roboh hingga jalan rusak.
El Yousfi, Y., Himi, M., El Ouarghi, H., Aqnouy, M., Benyoussef, S., Gueddari, H., et al. (2023). GIS preprocessing for rainfall-runoff modeling using HEC-HMS in Nekkor watershed (Al-Hoceima, Northern Morocco). E3S Web of Conferences, 364, 01005.
El-Bagoury, H., & Gad, A. (2024). Flood Prediction, and Mitigation Using Meteorological. Water, 16, 356.
Fadila, S., & Purboseo, S. (2022). Upaya pengendalian banjir kawasan Sub-DAS Celeng pra pembangunan Embung Imogiri. ETNIK: Jurnal Ekonomi–Teknik, 1(10), 670–681.
Hermawan, A., & Ardian, O. H. (2025). Dampak Perubahan Tata Guna Lahan terhadap Limpasan Sub DAS Oyo Hilir, Kabupaten Bantul, Daerah Istimewa Yogyakarta. G-Tech: Jurnal Teknologi Terapan, 9(2), 860–870.
Moriasi, D. N., Arnold, J. G., Van Liew, M. W., Bingner, R. L., Harmel, R. D., & Veith, T. L. (2007). Model Evaluation Guidelines For Systematic Quantification Of Accuracy in Watershed Simulations. Transactions of the ASABE, 50(3), 885–900.
Munajad, R., & Suprayogi, S. (2021). Kajian Hujan–Aliran Menggunakan Model HEC–HMS Di Sub Daerah Aliran Sungai Wuryantoro Wonogiri, Jawa Tengah. 167–186.
Peker, İ. B., Gülbaz, S., Demir, V., Orhan, O., & Beden, N. (2024). Integration of HEC-RAS and HEC-HMS with GIS in Flood Modeling and Flood Hazard Mapping. Sustainability, 16, 1226.
Rahmadhani, D. A., Hermawan, A., & Ardian, O. H. (2024). Analisis Banjir Di Sungai Cokroyasan Bagian Hilir. Prosiding Civil Engineering, Environmental, and Disaster Risk Management Symposium (CEEDRiMS) 2024. Yogyakarta.
Razikin, P., Kumalawati, R., & Arisanty, D. (2017). Strategi Penanggulangan Bencana Banjir berdasarkan Persepsi Masyarakat di Kecamatan Barabai Kabupaten Hulu Sungai Tengah. JPG (Jurnal Pendidikan Geografi), 4(1), 27–39.
Saputra, A. J., Sujono, J., & Jayadi, R. (2019). Kajian hidrologi dan analisa kapasitas tampang Sungai Opak Yogyakarta. Seminar Nasional Teknik Sumber Daya Air, 173-185.
Senjawati, E., Sumiadi, & Dermawan, V. (2025). Studi Pengendalian Banjir menggunakan Pemodelan HEC-RAS 1D di Sungai Likupang Bagian Hilir Kabupaten Minahasa Utara Provinsi Sulawesi Utara. Jurnal Teknologi dan Rekayasa Sumber Daya Air, 5(2), 1274–1287.
Setiyowati, Y. A., Harisuseno, D., & Sajali, M. A. (2025). Comparison of Correlation, PBIAS and RSR between Monthly, Daily, and Hourly GPM Rainfall Data. JPPIPA (Jurnal Penelitian Pendidikan IPA), 11(6), 615–624.
Sholikha, D. E. Z., Sutoyo, & Rau, M. I. (2022). Pemodelan Sebaran Genangan Banjir Menggunakan HEC-RAS di Sub DAS Cisadane Hilir. Jurnal Teknik Sipil Dan Lingkungan, 7(2), 147–160.
Shuaibu, A., Muhammad, M. M., Bello, A.-A. D., Sulaiman, K., & Kalin, R. M. (2023). Flood Estimation and Control in a Micro-Watershed Using GIS-Based Integrated Approach. Water, 15, 4201.
Sory, K. S., Belladona, M., & Hariza, E. R. (2025). Analisis Debit Puncak Pada Das Air Kinal Dengan Pendekatan Metode Hidrograf Satuan Sintetis Limantara dan Program HEC-RAS 5.0.7. Journal of Artificial Intelligence and Digital Business (RIGGS), 4(3), 137–142.
Sujono, J. (2025). Hidrologi Terapan Transformasi Hujan – Aliran dengan HEC HMS. Edisi ke – 2. Gadjah Mada University Press. Yogyakarta
Triatmodjo, B. 2008. Hidrologi Terapan. Penerbit Beta Offset. Yogyakarta.
U.S. Army Corps of Engineers. (2022). HEC-HMS User’s Manual. Hydrologic Engineering Center.
Xafoulis, N., Kontos, Y., Farsirotou, E., Kotsopoulos, S., Perifanos, K., Alamanis, N., Dedousis, D., & Katsifarakis, K. (2023). Evaluation of Various Resolution DEMs in Flood Risk Assessment and Practical Rules for Flood Mapping in Data-Scarce Geospatial Areas: A Case Study in Thessaly, Greece. Hydrology, 10, 91.
Yani, P Yani, P. R. Y., Saidah, H., & Wirahman, L. (2021). Pola Distribusi Hujan Jam-Jaman Di Stasiun Hujan Jurang Sate Dan Stasiun Hujan Lingkok Lime Pada Wilayah Lombok Tengah. Spektrum Sipil, 8(1), 41–54.
Unduhan
Diterbitkan
Terbitan
Bagian
Lisensi
Hak Cipta (c) 2026 Endah Theresya, Anggi Hermawan, Andrea Sumarah Asih
Artikel ini berlisensi Creative Commons Attribution 4.0 International License.
