Geographic information system (GIS)-Based multicriteria analysis of flooding hazard and risk in Ambo Town and its watershed, West shoa zone, oromia regional State, Ethiopia
| Autor: | Davide Geneletti, Gemechu Shale Ogato, Amare Bantider, Ketema Abebe |
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| Rok vydání: | 2020 |
| Předmět: |
Risk
Watershed 010504 meteorology & atmospheric sciences Population 0207 environmental engineering 02 engineering and technology Land cover 01 natural sciences Flooding Earth and Planetary Sciences (miscellaneous) 020701 environmental engineering education lcsh:Physical geography Risk management 0105 earth and related environmental sciences Water Science and Technology Spatial planning education.field_of_study Land use business.industry lcsh:QE1-996.5 Flooding (psychology) Hazard Land use management lcsh:Geology Geography lcsh:GB3-5030 Water resource management business Drainage density |
| Zdroj: | Journal of Hydrology: Regional Studies, Vol 27, Iss, Pp-(2020) |
| ISSN: | 2214-5818 |
| DOI: | 10.1016/j.ejrh.2019.100659 |
| Popis: | The purpose of the study was to analyze flooding hazard and risk from Geographic Information Systems (GIS)-based multicriteria perspective in Ambo town and its watershed and proposes strategic measures for sustainable flooding disaster risk management in urban watershed. Land use/land cover, elevation, slope, drainage density, soil, and rainfall were considered as important flooding hazard factors. Analysis of flooding risk was undertaken for Ambo town’s watershed using flooding hazard layer and the two elements at risk, namely human population and land use. Weighted linear combination (WLC) method was used in the process of criteria map aggregation for both flooding hazard and flooding risk. The result of the flooding hazard in the watershed reveals that more proportion of the watershed is high and very high flooding hazard area (60.58%). Moreover, more proportion of the town is high and very high flooding hazard area (66.87%). The result of the flooding risk in the watershed reveals that more proportion of the watershed is high and very high flooding risk area (41.76%). Moreover, half of the town is high and very high flooding risk area (50.09%). An integrated basin wide approach to flood management should be practiced as it is essential to address multiple water related issues at watershed level. Moreover, environmental education should be emphasized to build civic responsibility among the citizens. Keywords: Flooding, Hazard, Land use management, Risk, Spatial planning |
| Databáze: | OpenAIRE |
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