Environmental Engineering Reference
In-Depth Information
Fig. 2
Nigeria shoreline morphological zones (a) and coastal processes (b) (Sexton and Murday 1994 )
moderately well-sorted sand. While the western flanks are
less susceptible to erosion due to the dark and dark
brownish organic and peaty clay of high plasticity (Abam
1999 ), the eastern flank of brown sandy clay soil is more
vulnerable. The western delta flank extends from the Benin
River to east of the Forcados River estuary, while the
eastern delta flank extends from east of the Bonny/New
Calabar Estuary entrance to immediately east of the Imo
River.
The salinity intrusion within the Niger Delta depends
strongly on the spatial extent of the diurnal tidal range
within the region, which diminishes inland (Abam 1999 ),
with more inundation in the western and arcuate delta part
of the delta with settlements such as Port Harcourt, Bonny,
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