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Journal : Jurnal Riset Rumpun Ilmu Teknik (JURRITEK)

Analisis Genangan Sungai Bailang Akibat Kombinasi Debit Sungai dan Pasang Surut menggunakan Program Mike 21 Moningka, Frederiko Marchiano Imanuel; Thambas, Arthur Harris; Hendratta, Liany Amelia
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 2 (2025): Agustus : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i2.6171

Abstract

The coastal area of Manado City, particularly the estuary of the Bailang River in Bunaken District, frequently experiences inundation due to the complex interaction between river discharge and tidal fluctuations. This study aims to analyze the spatial distribution and extent of flooding resulting from the combination of river discharge and tides, as well as to evaluate mitigation strategies based on numerical modeling results. A two-dimensional hydrodynamic model was developed using MIKE 21 Flow Model FM HD, utilizing topographic and bathymetric data from DEMNAS and BATNAS, along with 2023 river discharge and tidal data. Simulations were conducted for existing conditions, minimum discharge with maximum tide, and maximum discharge with maximum tide. The results show that tidal influence significantly contributes to the increase in flood extent and duration, especially when high river discharge coincides with peak tidal conditions. The most affected areas are Kelurahan Molas and Tumumpa, located along the riverbanks and near the fish auction port, with inundation covering up to 4.973 hectares and water depths exceeding 0.5 meters. Recommended mitigation strategies include river normalization and the implementation of a real-time hydrodynamic early warning system. This study supports flood risk management and coastal spatial planning, serving as a technical reference for local government policy-making.
Co-Authors . Sukarno Abdul Karim, Intan A. N. S. Adare, Demetrius R. Ch. Alex Binilang Ardianto, Billy Prima Ariestides K. T. Dundu Bimo A. S. Wonggo Cindy J. Supit Dave Steve Kandey Dave Steve Kandey, Dave Steve Davy Ivan Robert Jansen Dennis Paul Tambingon, Dennis Paul Djokja, Syalia Ayu Fitriana Dwi Tirta Yudha Gaib, Dwi Tirta Yudha Eveline M. Wuisan Firdaus Fuad Halim Gaghana, Marleve Ighnatius Sasundung I. S. Gerald C. A. Nayoan Gloria A. Palit Hanny Tangkudung Hendra Riogilang Iroth, Angelia Isa, Mohamad Isri R. Mangangka, Isri R. Jeffry Swingly Frans Sumarauw Jeremia R. R. Oroh Jimmy Y. Kalumata Kalangi, Peni Patricia Kamase, Malinda Kapoh, Sharon Beatrix Karina, Farah Vida Kristoffel R. P. Kapoh La'la Monica Lagoari, Meyvi C. Lahamendu, Victor Christofel Lalamentik, Tesalonika Catharina Lambertus Tanudjaja Lumowa, Thessalonika S. G. Makasaehe, Deborah Mamahit, Donny Mambu, Venezia Syaloom Manansang, Merry Kristin Manengkey, Arsita Maria Monica, La’la Moningka, Frederiko Marchiano Imanuel Ni Kadek A. F. C. E. Subagia, Ni Kadek A. F. C. E. Olivia M Tumurang Pagayang, Enjelia Tasya Panelewen, Vivienne Pantungan, Ferdinand R. Pingkan Esterina Tampanguma, Pingkan Esterina priskila Perez Mosesa, priskila Perez Raco, Maria Gloria Raden G. Rompas Rahelga F. E. Rembet Riogilang, Herawaty Roski R.I. Legrans Rurung, Muhammad Alriansyah SATRIYAS ILYAS Shawn D. Kairupan Simaremare, Ivana W. Soekarno Soekarno Sondak, Scrivily Witsly Sukarno, David Endro Tomici Suma, Muayyad Feisal Sumardi, Mirza Arrazy Susilo, Dewi M. M. Tamboto, Yonathan Tampubolon, Eden Taslim, Febrian Thambas, Arthur Harris Tiny Mananoma Tommy Jansen, Tommy Topah, Renaldo F. Tulandi, Andre Felix Viralsia Ivana Kundimang, Viralsia Ivana Wulandarry D. Harundja