J K L M N O P Q R S T U V W X Y Z A B Benue River – Oshun River – Ngadda River – Bonny River C Calabar River – Oramiriukwa River – Ngadda River – Kaduna River – Bonny River C Calabar River – Kwa Ibo River N New Calabar River – Katsina Ala River – Otamiri River – Kaduna River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Ngadda River – Kaduna River – Ngadda River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Ouémé River R Rima River S Sokoto