Umpqua River Oregon Aerial Photograph Data for 1939

The Umpqua River drains 12,103 square kilometers (4,673 square miles) in southwest Oregon before flowing into the Pacific Ocean at Winchester Bay near the city of...安普瓜河（Umpqua River）的集水流域覆盖俄勒冈州西南部12103平方公里（合4673平方英里）的区域，最终在临近某城市的温彻斯特湾（Winchester Bay）注入太平洋。