EntityQ4781577· pop 14· linked from 8 articlesOkpara RiverSign in to saveriver in Benin and Nigeria, tributary of Ouémé RiverConnectionsNigeriaCountryBeninCountryAtlantic OceanEntitygeographic coordinate systemEntityInternational Standard Book NumberEntitydigital object identifierEntityInternational Standard Serial NumberEntityBorgou DepartmentEntityOuémé RiverEntityBenin–Nigeria borderEntitylist of rivers of BeninEntityForeign relations of BeninEntityCategoriesBenin–Nigeria borderRivers of BeninRivers of Nigeria