Cooba Bulga StreamCooba Bulga Stream, a mostly perennial stream of the Hunter [River (New South Wales)|Hunter River] catchment, is located in the Hunter region of New South Wales, Australia.CourseOfficially designated as a river, the Cooba Bulga Stream rises on the southern slopes of the Liverpool Range within the Great [Dividing Range] about south of Omaleah Cliffs. The river flows generally southwest and then south before reaching its confluence with the Munmurra River near. Cooba Bulga Stream descends over its course.