Flood Hazard Mapping in Baolan, Tolitoli District, Central Sulawesi

Main Article Content

Ferdi
Rendra Zainal Maliki
Iwan Alim Saputra

Abstract

Floods has been the type of hazard that often hits the capital of Tolitoli Regency, Central Sulawesi Province,
namely Baolan District. The flood in 2017 was the worst incident that had ever occurred in Baolan District; it was
recorded that the water level (flood) reached 4 meters, 15 houses were badly damaged and lost by the flood currents.
This research was conducted in Baolan District from May to August 2021. The tools and materials used in this study
were: a laptop, ArcGis 10.4 software, and secondary data (rainfall data, Digital Elevation Model — DEM data, soil type
maps, and RBI maps at 1:50,000 scale). The research method used is descriptive quantitative with a spatial approach
using saturated sampling rules obtained from the entire population. The purpose of this study was to determine the
level and distribution of flood hazard areas in Baolan District. The results of the analysis show that Baolan District has
the narrowest (small) level of flood hazard, namely very low class with an area of only 263.261 ha or 0.7% of the total
area of Baolan District. Low class with an area of 31460,417 ha or 79.8% and is the class/level of the widest (large)
flood hazard. High and very high class respectively have an area of 6713.534 ha or 17.0% and 975.914 ha or 2.2% of
the total area of Baolan District. In general, the areas that have very high to high grades are located in the southern,
central, and western parts of the research area, including Kelurahan/Desa Tambun, Baru, Nalu, and Leleannono.

Article Details

Section
Articles

References

Ariyora, Y. K. S., Y. Susanto & Prasasti, I. (2015). “Pemanfaatan Data Penginderaan Jauh dan SIG untuk Analisa Banjir (Studi Kasus: Banjir Provinsi DKI Jakarta)”. Jurnal Geoid, 10 (2): 137 - 146.

Badan Nasional Penanggulangan Bencana [BNPB]. (2021). Geoportal Bencana Indonesia Tahun 2021. Tersedia https://gis.bnpb.go.id/ Diakses 12 September 2021

Haghizadeh, A., et al., (2017).Forecasting Flood-Prone Areas usine,ig Shannon’s Entropy Model. Journal Earth Syst. Sci:26-39

Hermon, Dedi. 2015. Bencana Alam. Jakarta: PT RajaGrafindo Persada

Kementrian PU. 2012. Pedoman Pembuatan Peta Rawan Longsor dan Banjir Bandag Akibat Runtuhnya Bendungan Alam. Jakarta: Kemen PU dan JICA

Marfai, Muh, Aris, Dibyosaputro, Suprapto, Hendy, Fatchurohman. 2016. Analisis Bencana Menunjang Pembangunan Daerah (Studi Kabupaten Batang). Yogayakarta: Gadjah Mada University Press

Peraturan Menteri Pekerjaan Umum dan Perumahan Rakyat Nomor 26/PRT/M/2015 Tahun 2015 tentang Pengalihan Alur Sungai dan/atau Pemanfaatan Ruas Bekas Sungai

Raghunath, H., M. 2006. Hidrology (Principles, Analuysis, Design). New Delhi: New Age International (P) Limited

Riadi, B. (2017). “Analisis Spasial Risiko Bahaya Banjir di Lahan Sawah di Kabupaten Karawang”. Prosiding Seminar Nasional Geomatika 2017: Inovasi Teknologi Penyediaan Informasi Geospasial untuk Pembangunan Berkelanjutan. 14 November 2017. Bogor

Sudibyakto, H. A. (2011). Pengembangan Analisis Risiko Multi-Bencana dalam Mengantisipasi Perubahan Iklim Di Indonesia. Pidato Pengukuhan Jabatan Guru Besar pada Fakultas Geografi, Universitas Gadjah Mada

Surat Keputusan Menteri Pertanian Nomor: 837/Kpts/Um/11/1980 Tentang Kriteria dan Tata Cara Penetapan Hutan Lindung

Suryanto, D. (2016). Tanah Airku Salah Kelola Hujan. Yogyakarta: Deepublish.

Tjasyono, B., I. Juaeani, & S. W. B. Harijono. (2007). “Proses Meteorologis Bencana Banjir di Indonesia”. Jurnal Meteorologi dan Geofisika, 8 (2): 64-78.

Undang-Undang Nomor 24 Tahun 2007 Tentang Penanggulangan Bencana

Widiawaty, Agung, Millary, Dede, Moh. 2018. Pemodelan Spasial Bahaya dan Kerentanan Bencana Banjir Di Wilayah Timur Kabupaten Cirebon. Jurnal Dialog Penanggulangan Bencana, 9 (2):142-153

Widiawaty Agung, Mllary, Dede, Moh, dan Ismail, A. (2018b). “Kajian Komparatif Pemodelan Air Tanah Menggunakan Sistem Informasi Geografi di Desa Kayuambon, Kabupaten Bandung Barat”. Jurnal Geografi GEA, 18 (1): 63 – 71

Yulianto, Fajar, Marfai’, Aris, Muh, Parwati, Suwarsono. (2009). “Model Simulasi Luapan Banjir Sungai Ciliwung di Wilayah Kampung Melayu - Bukit Duri Jakarta, Indonesia”. Jurnal Penginderaan Jauh, 6: 43 – 53