Izu yezilwane v Portland ube nesilinganiso esimaphakathi — 4.5 (ngokwezilinganiso zomsebenzisi Mapich).
Sithole izu yezilwane Portland emigwaqweni elandelayo: Southwest Canyon Road
Le datha ikhiqizwa kusetshenziswa izihlungi zangokwezifiso ezisuselwe kukho 2 Izinkampani, eyethulwe kuleli khasi.