1963 Map of Diablo Dam

About this map

Diablo and Newhalem serve as the primary human anchors in this high-altitude landscape dominated by the hydroelectric infrastructure of the Skagit River. Compiled from 1958 aerial photography, the map details a sophisticated network of energy production, including the Gorge Dam, the Gorge Powerhouse, and the Newhalem Creek Powerhouse. These industrial features contrast sharply with the ice-fields of the Colonial Glacier and Neve Glacier to the south. The terrain is marked by distinctive summits such as Snowfield Peak and the whimsical Paul Bunyans Stump, alongside the massive waters of Diablo Lake and Gorge Lake. This survey captures the region as it functioned within the Ross Lake National Recreation Area and North Cascades National Park, documenting the access routes like the Sourdough Lookout Trail used to navigate the steep drainage of Stetattle Creek and Ladder Creek.