Study of Slope Gravity on Flood Vulnerability Level in Gorontalo City


Authors : Dr. Ir. Arqam Laya

Volume/Issue : Volume 9 - 2024, Issue 12 - December

Google Scholar : https://tinyurl.com/mzbspc7s

Scribd : https://tinyurl.com/3ea3edds

DOI : https://doi.org/10.5281/zenodo.14591142

Abstract : The purpose of this research was to know the condition of vulnerability of Gorontalo City to flood inundation, based on land slope through a hydro geomorphology study approach. The sampling method by dividing the research area size 250 x 250 m2 (based on the grid). Land unit approach was used in the analysis technique. The results of this study concluded that the area of Gorontalo City, (1) slope of 3507.84 Ha or 52.6% of the total area with very flat class-details (class L1, L2, L3 and L4), (2) Class Flat to very sloping class this slope of the region 0-7%; (3) Very flat-sloped class or of this 52.6%, potential to floods of 965.8 Ha (27.5%) of the plain area or 14.4% of Gorontalo City (4) Class is quite steep (Class L5> 8%) area of 2782.18 ha in the form of hills / mountains

Keywords : Slope, Flood Vulnerability, Gorontalo City.

References :

  1. Arsyad, S., 2006, Soil and Water Conservation, IPB Press, Bogor
  2. Public Works Department, 1987, Standard Method for Calculating Flood Discharge, Public Works Department, LPMB Foundation, Bandung
  3. Department of Public Works, 2004, Hydrology and Hydrometry Report, Department of Public Works / Kimpraswil, Gorontalo Province
  4. Ghozali, H. Imam, 2011, Multivariate Analysis Application with IBM SPSS 19 Program, Diponegoro University Publishing Agency, Semarang.
  5. Purba, MP, 2009,The Amount of Surface Flow (Runoff) on Various Types of Slopes Under Eucalyptus spp. Stands. (Case study in HPHTI PT. Toba Pulp Lestari, Tbk. Aek Nauli Sector, Thesis, Department of Forestry, Faculty of Agriculture, North Sumatra, Medan.
  6. Sebastian, L., 2008, Flood Prevention and Mitigation Approach, Journal of Civil Engineering Dynamics, Volume 8, Number 2, July 2008 : 162 – 169.
  7. USDA, 1968, Soil Interpretation for Recreation, Soil Memorandum 69, SCS-USDA, Washington.
  8. Zuidam, RAV, and Cancelado, 1979, Terrain Analysis and Classification Using Aerial Photography, ITC, Enshede, (The Netherlands)
  9. Zuidam, RAV, 1983, Guide to Geomorphologic Aerial Photograph Interpretation and Mapping, Section of Geology and Geomorphology, ITC, Enshede, (The Netherlands).
  10. Zuidam RAV and Voskuil, 1982, Example for Geomorphological Maping in Central Java, ITC Journal, 3 : 293 – 297

The purpose of this research was to know the condition of vulnerability of Gorontalo City to flood inundation, based on land slope through a hydro geomorphology study approach. The sampling method by dividing the research area size 250 x 250 m2 (based on the grid). Land unit approach was used in the analysis technique. The results of this study concluded that the area of Gorontalo City, (1) slope of 3507.84 Ha or 52.6% of the total area with very flat class-details (class L1, L2, L3 and L4), (2) Class Flat to very sloping class this slope of the region 0-7%; (3) Very flat-sloped class or of this 52.6%, potential to floods of 965.8 Ha (27.5%) of the plain area or 14.4% of Gorontalo City (4) Class is quite steep (Class L5> 8%) area of 2782.18 ha in the form of hills / mountains

Keywords : Slope, Flood Vulnerability, Gorontalo City.

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