Indonesian Journal of Geography
Vol 53, No 1 (2021): Indonesian Journal of Geography

The Integrated Spatial Assessment of The Flood Hazard Using AHP-GIS: The Case Study of Gorontalo Regency

Muhammad Ramdhan Olii (Department of Civil Engineering, Universitas Gorontalo, Limboto, Gorontalo, Indonesia)
Aleks Olii (Department of Civil Engineering, Universitas Gorontalo, Limboto, Gorontalo, Indonesia)
Ririn Pakaya (Department of Public Health, Universitas Gorontalo, Limboto, Gorontalo, Indonesia)



Article Info

Publish Date
14 Apr 2021

Abstract

Mapping of potential flood hazards is an important element in ensuring proper planning of development and implementing flood disaster mitigation efforts for flooded areas. Therefore, this study was conducted to assess the regional-scale flood hazard areas in Gorontalo District using an AHP-GIS integration technique with the focus on factors such as annual rainfall, elevation, slope, soil type, distance to the water bodies, and land-use. The flood hazard was divided into five classes, ranging from very low to very high, and 13.61% of the total area in Gorontalo Regency is classified as either high or very high. Moreover, the distribution of the hazard was verified and 65 events were recorded to have a level of 90.7% and this indicates the model is reliable to assess flood hazard. The results showed GIS-AHP integration is a promising method to accurately predict flood-hazard areas, especially in those with limited data.

Copyrights © 2021






Journal Info

Abbrev

ijg

Publisher

Subject

Earth & Planetary Sciences

Description

Indonesian Journal of Geography ISSN 2354-9114 (online), ISSN 0024-9521 (print) is an international journal of Geography published by the Faculty of Geography, Universitas Gadjah Mada in collaboration with The Indonesian Geographers Association. Our scope of publications includes physical geography, ...