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Flood Hazard Mapping via High-Resolution Imagery Rohman, Arif; Nuha, Muhammad Ulin; Wibowo, Yudha Gusti; Sigalingging, Roy Chandra P.; Jumadi, Jumadi; Zamzami, Hamza Ait; Ibrahim, Mohd Hairy
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 3 (2025): November 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i3.751-765

Abstract

Urban flooding in low-lying coastal zones like Way Lunik, Bandar Lampung, presents a growing challenge driven by rapid land use change, degraded infrastructure, and limited hydrological planning. This study combines high-resolution UAV-derived Digital Surface Models (DSM), national elevation data (DEMNAS), satellite imagery, and field-based drainage surveys to analyze flood risk in the Way Lunik watershed. Hydrological modeling shows that the watershed acts as a terminal catchment with low slopes and only two main discharge points, making it prone to runoff accumulation and tidal backflow. Significant mismatches between modeled and observed drainage patterns stem from blocked channels, informal settlements, and outdated infrastructure. Land cover analysis (2017–2023) reveals substantial growth in impervious surfaces, especially over former green or agricultural areas, increasing runoff and decreasing infiltration. Field surveys confirm drainage blind spots, unplanned flow paths, and encroached outlets in industrial and residential zones. The study also maps building types and clusters of flood-prone areas, often overlapping with marginalized neighborhoods and public facilities. By integrating elevation data, UAV imagery, and ground mapping, this research provides a spatially detailed assessment of urban flood hazards, emphasizing the importance of watershed-scale planning, infrastructure renewal, and the role of UAVs in adaptive flood risk management.
Co-Authors Addion Nizori ADHE SAPUTRA, ADHE Adri Adri AHMAD MUZAFFAR Al-azizah, Putri Ali Sadikin Anis Anis Tatik Maryani ANWAR, DEDY Arif Rohman Arkham, La Ode Aryo Yudhoyono Atman Atman, Atman Aves Dwi Hendra Bimasatyaji Surya Ramadhan Bimastyaji Surya Ramadhan Bonifasius Boy Indrayana Cahyo, Mohammad Rafif Dwi Candra Wijaya Candra Wijaya, Candra Chaniago, Muhammad Akbar Damris Muhammad Defia Indah Permatasari Desfaur Natalia Dewi Rosanti Dodi Devitriano Dody Oktantiyo S Endarman Saputra Fadillah, M Rizky Faizar Farid Firdaus Firdaus Gusniwati , Hadi Winarno Heriyanti Heriyanti Hutwan Syarifuddin Hutwan Syarifuddin Hutwan Syarifuddin Huwan Syarifuddin Ibrahim, Mohd Hairy Intan Lestari IQRONI, DAVID Irene, Rilis Jalius Jalius Jalius Jalius Jarwinda, Jarwinda Jasminarni Jumadi Jumadi Kerlin Maysatria Khanafy, Abdul Kholivia KINDA, MEIYER MARTHEN Kurniawan, Setyo Budi La Ode Arkham Lusitania, Lusitania M Alpaizin MARIA BINTANG Maysatria, Kerlin Miranti Sari Fitriani Muhammad Andriansyah, Muhammad Muhammad Naswir Muhammad Safri MUHAMMAD ULIN NUHA Nainggolan, Ellyas Alga Nasri MZ Naswir, Muhammad Natalia, Desfaur Neliyati, Neliyati Ngatijo Ngatijo Nur'ani, Herlina Nyimas Myrna EF Petrus Halomoan Pratiwi, Cantika Putri, Ilmi Tazkia Putri, Intan Andriani Rahmat Basuki Rahmat Fadhilah Ramadan, Bimastyaji Surya Restina Bemis Rizki Ananda Rosanti, Dewi Rosarina, Desy Rosarina, Desy Safitri, Rahayu Puji Saidi, Busyra B Sarman Sarman Sigalingging, Roy Chandra P. Simanjuntak, Evy Enjelina Sitepu, Ivana Solikhati Indah Purwaningrum Suri Setyaningsih Dewi Susila Arita Syahnur, Mirza Tsabitah, Natasya Ummi Kalsum Wahyudi Zahar Winny Laura Christina Hutagalung Yardha Yardha Yasdi Yasdi Yudhoyono, Aryo Yudi Achnopa Yulia Morsa Said Zamzami, Hamza Ait