The young alluvial soils show little profile development although they are sometimes stratified. With the exception of about 800 ha of sand to loamy sand soils in one area, textures vary from sandy loam to uniform clay, with the finer textures tending to occur toward the mangrove and in the flood-prone area between the Meme and Mokoko Rivers. Although there is evidence of flooding and seasonal waterlogging from several other rivers that traverse the plain, these soils rarely show evidence of strongly reducing conditions within m of the surface. The soils are medium to strongly acid with a poor.
