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JDR Vol.5 No.6 pp. 657-665
(2010)
doi: 10.20965/jdr.2010.p0657

Paper:

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Development of a Framework for the Flood Economic Risk Assessment Using Vector GIS Data

Kenichiro Kobayashi*1, Kaoru Takara*2, Mitsugu Funada*3,
and Yukiko Takeuchi*4

*1Educational Unit for Adaptation and Resilience for a Sustainable Society, Center for Promotion of Interdisciplinary Education and Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

*2Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

*3Pasco Corporation, 1-2-3 Minatomachi, Naniwa-ku, Osaka 556-0017, Japan

*4Graduate School of Global Environmental Studies, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan

Received:
August 16, 2010
Accepted:
September 12, 2010
Published:
December 1, 2010
Creative Commons License
Keywords:
flood hazard, GIS vector data, economic loss, damage ratio, house and crop field polygon
Abstract
This paper proposes a flood economic risk assessment framework using vector GIS data, expressing individual house and paddyfield, prepared by a municipal Japanese government. Flood inundation is first simulated with a structured grid, then the simulated flood inundation depth, expressed in grid cells, is assigned to vector data house and paddyfield polygons as attributes. Flood-damage ratios of houses and paddyfields are then calculated using relationships of the flood depth, duration, and damage ratio opened by the Japanese Ministry of Land, Infrastructure, Transport, and Tourisms (MLIT). Economic loss involving building and paddyfield damages due to flooding is then calculated by multiplying the damage ratio, evaluation price per area, and the asset area. The advantage of using such vector data is that it yields the area of each house and paddyfield precisely, which also realizes, on average, the precise economic loss estimation. As the results, the spatial distribution of economic loss on an individual house/paddyfield scale is also identified. Since vector data shows area characteristics, the framework proposed here is useful in communitybased flood management. A workshop presenting the framework showed that the system potentially induces workshop participants to consider community-based flood hazard management.
Cite this article as:
K. Kobayashi, K. Takara, M. Funada, and Y. Takeuchi, “Development of a Framework for the Flood Economic Risk Assessment Using Vector GIS Data,” J. Disaster Res., Vol.5 No.6, pp. 657-665, 2010.
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References
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