Lagos is characterized by a wet equatorial climate with mean annual rainfall above 1800mm. There are two main
seasons, namely; the rainy season and dry season, which usually last from April to October and October to March
respectively. It experiences an average temperature of 270C. The vegetation cover is dominated by swamp forest,
wetlands and tropical swamp forest comprising of fresh waters and mangrove. Generally, the pattern of relief in
Lagos reflects the coastal location of the state. Water is the most significant topographical feature in Lagos State.
Water and wetlands cover over 40% of the total land area within the state and an additional 12% is subject to
seasonal flooding (Iwugo et al., 2003). The geology of Lagos State (Figure 2) is mainly sedimentary of tertiary
and quaternary sediments.