Abstract

Flooding is one of the natural hazards affecting various parts of Nigeria, causing loss of life, impeding health, and disrupting human livelihood. This paper seeks to address the flooding issue by using geospatial analysis to model flood susceptibility in Amuwo Odofin Local Government Area of Lagos State. A multi-criteria method was adopted, using parameters such as rainfall, distance from rivers and streams, land use and slope. The flood susceptibility map produced from the analysis indicates the four-levels of risk to flooding (very high, high, low, and very low-risk levels) at different locations of the study area. The findings revealed that Amuwo Odofin covers about 171.19 sq km, 10 percent of which fall within the very high-risk zone, while the high-risk zone covers 50 percent of the total area. The final map shows that locations nearer to the water bodies and within low terrains are susceptible to flooding. The communities within the very high and high-risk zones include; Iyagbe, Ibese, Isunba, Irede, Kirikiri, Aiyetoto- Asogun, Elachi, Isuba, Olute, Satellite town, Alapako, Amuwo, Agboju. Communities at low-risk zones include Ijegun, Iseri- Osun, Ijagemo. Notably, roads and buildings will be flooded if the right actions are not taken on time. These findings are vital for appropriate government agencies such as town planners, civil society, emergency management agencies and other key stakeholders who can implement preparedness, evacuation planning and early warning to settlements within the inferred flood risk zones.