1957 Map of Oroville

About this map

Osoyoos Lake straddles the international boundary between Washington and British Columbia, anchoring this 1957 field-checked survey of the northern Okanogan Valley. The settlement of Oroville serves as the regional hub at the confluence of the Similkameen River and the Okanogan River. The landscape reflects a diverse mid-century economy, where the Great Northern River rail line follows the valley floor, supporting agricultural transport and local industry. To the west, the arid Whitestone Flats and Whitestone Lake are serviced by irrigation infrastructure like the Whisky Mtn Flume. Eastward, the terrain rises sharply into the Okanogan National Forest, where features such as Mt Hull and Haley Canyon dominate the topography. Local history is evidenced by the Cem near Oroville and the Lucky Knock Mine in the southwest, indicating the area's mining and pioneering heritage.