Mapping of Flood Prone Areas in Surulere, Lagos, Nigeria: A GIS ApproachReport as inadecuate




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Increase in the frequencyof flooding incidents all over the world and indeed in Nigeria is a major causefor concern. The purpose of this research work is to identify the factors that leadto flooding; and using Geographic Information Systems, map the flood proneareas in Surulere. The causal factors of flooding in Surulere, such as highrainfall intensity and duration, land use patterns, human actions,urbanization, soil impermeability to mention but a few were identified. Thepattern of rainfall in Surulere was analysed using 20 years rainfall data fromThe Nigerian Meteorological Agency. The land use-land cover map as well as theDEM of Surulere was generated in the ArcGis environment with ikonos imagery and1:50,000 toposheet of Lagos S.E which covers Surulere. The Flood prone areas inSurulere were then mapped. Results show that majority of the land area ofSurulere is prone to flooding. Flood mitigation such as early warning systemsand flood forecasting, proper urban development, awareness and research shouldbe implemented by the Lagos State Government.

KEYWORDS

GIS, Flooding, Surulere, DEM

Cite this paper

Okoye, C. and Ojeh, V. 2015 Mapping of Flood Prone Areas in Surulere, Lagos, Nigeria: A GIS Approach. Journal of Geographic Information System, 7, 158-176. doi: 10.4236-jgis.2015.72014.





Author: Chidinma Blessing Okoye1, Vincent Nduka Ojeh2

Source: http://www.scirp.org/



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