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All Journal Jurnal Keteknikan Pertanian Tropis dan Biosistem Journal of Engineering and Technological Sciences Jurnal Teknik Sipil Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal on Education JURNAL SUMBER DAYA AIR Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul)
Suryadi, Yadi
Institut Teknologi Bandung
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Evaluasi Kapasitas Sungai Kuning dalam Mengalirkan Banjir Lahar Dingin Pasca Erupsi Merapi Tahun 2010 Rizaldi Wisnu Nugroho; Yadi Suryadi; Faizal Immaddudin Wira Rohmat; Ulin Nurul 'Aini
Journal on Education Vol 6 No 2 (2024): Journal on Education: Volume 6 Nomor 2 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i2.4951

Abstract

Indonesia as a country with the largest number of volcanoes in the world, Mount Merapi which is one of the most active. OIne of its largest eruptions recorded in 2010. Kuning River, which originates into Mount Merapi is affected by cold lava flows. In the research region, there are ten sabo dams that function as cold lava controller, supposedly designed with a 100-year return for volcanic areas. This research focuses on the capacity of rivers and sabo dams to cope with cold lava with return period of 2 to 100-year. Hydraulic modeling of cold lava was performed using non-Newtonian 2D HEC-RAS with DEM data from LiDAR in 2012. Results showed the river was able to flow lava floods 2 to 100-year return period without sabo dams. However, in existing conditions with ten sabo dams, there is flood at upstream of Sabo Dam KU-Rejodani starting from the 5-year return period. This has been validated with calculations that are in line with hydraulic simulation results. To increase river capacity, construction of 1.5-meter high embankment upstream of the KU-Rejodani sabo dam proved to be an effective solution, to increase river capacity up to Q100. This effort supports mitigation for cold lava disaster.
Evaluation of Drainage System of Light Rapid Transport (LRT) Depo – Kelapa Gading – Jakarta City Joko Nugroho; Mohammad Bagus Adityawan; Ana Nurganah Chaidar; Yadi Suryadi
Journal of Engineering and Technological Sciences Vol. 55 No. 5 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.5.9

Abstract

LRT Depo is a vital infrastructure in the operation of Jakarta’s LRT system. The LRT Depo is located in the Kelapa Gading area. Kelapa Gading is an inundation-prone area in Jakarta. Hence a drainage system should be prepared to manage surface runoff in the area to avoid additional runoff to the surrounding drainage system. In order to reduce runoff in Jakarta Special Province, the Governor of Jakarta has imposed a regulation on surface runoff management for every developed area. The runoff control measures, promoted in the regulation to be applied, are in the form of infiltration wells and storage ponds. The principle of reducing peak discharge by a possible storage system for LRT Depo was designed and applied to comply with regional regulations on rainwater control. The drainage system, initially based on the regulations, was also modeled in the Storm Water Management Modelling software (SWMM). This study evaluated the drainage system by elaborating the reduction of the peak discharge based on the simulation. A reduction of peak discharge was observed in the modeling results. The proposed runoff control at LRT Depo Kelapa Gading is a proper design of infrastructure development for a flood prone area.
Simulation of Design Flood Discharge under Projected Land Cover Scenarios Using ANN–MOLUSCE and HEC-HMS in the Cijangkelok Watershed Vika Febriyani; Yadi Suryadi; Tri Wahyudin Ahmad; Arief Yudho Wicaksono; Yosephina Puspa Setyoasri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.419-430

Abstract

River flooding during rainy season is partly resulted from land cover changes. This study analyzes the impact of land cover changes on flood hydrographs using Curve Number (CN), Impervious (I), and Initial Abstraction (Ia). Land cover data (2009 and 2022) were obtained from the Ministry of Environment and Forestry, while the 2035 scenario was modeled with QGIS MOLUSCE (ANN). CN and I values were then applied in HEC-HMS simulations with SCS and Snyder Unit Hydrograph methods. Results show major land conversion by 2035 is particularly from dryland to rice fields, built-up areas, and forest plantations. The 2035 land cover prediction had minimum overall error of 0.0332 and Kappa coefficient of 0.765, indicating good model reliability. Composite CN increased from 67.9 (2009) to 68.0 (2022) and 68.4 (2035); I values from 5.6 to 5.7 and 6.4; while Ia decreased from 24.0 to 23.9 and 23.5 (2035). Flood discharges with the SCS method rise from 617.2 m³/s (2009) to 623.8 m³/s (2022) and 641.3 m³/s (2035), while the Snyder method produced 621.3, 621.6, and 630.5 m³/s. Statistical comparison between simulated and frequency-based design flood discharge results in PBIAS values of 0.1–0.2 (very good) and NSE of 1.0 (very good). The discharge increases of 1.1–2.8% indicate that land cover changes contribute to higher flood potential, but still in moderate level as most conversion is to rice fields, which function as temporary water storage and delay direct runoff.
Co-Authors Adityawan, Mohammad Bagus Afrizal Maulana Sutrisna Ana Nurganah Chaidar Arief Yudho Wicaksono Arwin Sabar Asrini Chrysanti Astri Sri Lestari Bagus Pramono Yakti Edy Anto Soentoro Eka Oktariyanto Nugroho Ernawati, Ernawati Faizal Immaddudin Wira Rohmat Hadi Kardhana Handani Handani Hernawati Hernawati Imam Muhardiono Indragiri Jatikusuma Indratmo Soekarno Indratmo Soekarno Ingerawi Sekaring Bumi Ivan Aliyatul Humam Iwan Kridasantausa Hadihardaja Jatikusuma, Indragiri Joko Nugroho Joko Siswanto Mohammad Bagus Adityawan Muhardiono, Imam Mulyanti Mulyanti Neneng Dian Pradiko, Hary Prayatni Soewondo Rahim Mustaqim Rizaldi Wisnu Nugroho Soentoro, Edy Anto Tri Wahyudin Ahmad Ulin Nurul 'Aini Vika Febriyani Widyaningtias Widyaningtias Widyaningtias Widyaningtias Yosephina Puspa Setyoasri Yusanuari Alaniri