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Journal : JGISE-Journal of Geospatial Information Science and Engineering

Low-cost alternative flood modeling using CHIRPS data in the Way Garuntang Catchment, Bandar Lampung, Indonesia Sahid, Sahid; Nana, Yanto Putri; Fahmi, Aziz; M Gilang, Mardika Indra; Ferial, Asferizal; Syukry, Zein Akbar; Wiedad, Diyaulhaq; Devi, Yunida
Jurnal Geospasial Indonesia Vol 7, No 2 (2024): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.94307

Abstract

Floods are hydro-meteorological events that could impact economic losses and threaten human life. Floods are events where water overflows in potential areas due to exceeding the river's capacity. Flood modeling is the key in reducing the impact of losses resulting from flood disasters. Satellite-based rainfall data provides data with spatial and temporal distribution that has the potential to be an alternative as input in flood modeling. The availability of satellite rainfall data as input for flood modeling certainly requires an assessment of the modeling results' accuracy level. This research aims to investigate the performance of flood inundation modeling using CHIRPS data. The accuracy value of flood modeling results is calculated by comparing flood modeling results through Snyder-Alexejev synthetic unit hydrograph discharge calculations, which are then applied to 2D flood hydraulic modeling using HEC-RAS. The findings indicate that as an alternative to rainfall station data to model flood inundation, Chirps data have a level of accuracy that can be considered. Even though there are differences in the extent and depth of flood inundation between CHIRPS data and observation rainfall stations data, the results of modeling with CHIRPS data can contribute to mapping potential flood-prone areas.
Co-Authors Afriyanti Indi Mustari Ahmad Yudi Alda Farida Andinata, Reynaldi Andry Yuliyanto Aprilia, Ayu Sinta Apriwelni, Siska Asferizal, Ferial Ayudia Hardiyani Kiranaratri Budi Ribowo, Anggarani Cahyo Agung Saputra Condro Winarsih, Anita Lestari Condro, Anita Lestari Dandi Rahman Hakim Dandi Rahman Hakim Devi, Yunida Dukhi Safaraz, Muhammad Ekaputra, Reza Asriandi Fadillah Sabri Fahmi, Aziz Fatkhurrozi, Muhammad Fauziah, Selma Nurul Ferial, Asferizal Fitriana, Indri Rahmandhani Galih Rio Prayogi Hayyu Sariyah Heni Pujiastuti Ilpandari, Ilpandari Indri Rahmadhani Fitriana Indri Rahmandhani Fitriana Julita Hayati Junita Eka Susanti Khanza, Ayu Kamila Kurniawan, Reynaldi Lukamnul Hakim Lumbantobing, Oscar M. Juang Renaldi Fiqri Marina, Bernaditha Catur Martino, Ahmad Fadlun Harianto Mashuri Mashuri Mashuri Mashuri Michael Michael Michael Miskar Maini Mustofa, Umar Nadi, Muhammad Abi Berkah Nana Putri Yanto Nur Annisa, Gita Oktarina Oktavia, Amelia P Kirtinanda Pratama, Maryo Inri Priyono, Alfito Putri Ayu Dwiyana Putri, Ajeng Meidiany Rahma Yanda Rahmat Kurniawan Rahmawati, Vaisyah Retno Hutami Adinigsih Sahid Sahid Saputro, Eka Aji Sedo Putra, Muhammad Hakiem Setiawan, Preza Sihombing, Tera Melya Patrice Simaremare, Nicodemus Serep Martua Aritonang Sitepu, Arif Rahman Hakim Sitompul, Naomi Jesika Syahidus Syuhada Syukry, Zein Akbar Tambunan, Hermon Frederik Tera Melya Patrice Sihombing Wiedad, Diyaulhaq Wikantari, Ni Made Lita winarsih, anita lestari condro Wiratyadi, Irfaan Yudi, Ahmad Zhafira, Elian