1963 Map of Ross Dam

About this map

The hydroelectric and recreational landscape of the upper Skagit River is defined by the massive impoundments of Ross Lake and Diablo Lake. Following field checks in the early 1960s, this survey documents the infrastructure of Ross Dam and the adjacent Ross Lake Guard Station during a period of transition as the area moved toward formal park status. The map illustrates the complex interaction between engineering and wilderness, showing the Diablo Lake Resort nestled near the spillway elevation of 1205 feet, while steep slopes lead to high-altitude landmarks like the Sourdough Lookout. Interior access is primarily represented by historical routes such as the Thunder Creek Trail and the Sourdough Lookout Trail. The terrain features notable glacial remnants like the Neve Glacier and hydrological curiosities such as the Panther Potholes, marking the divide between Whatcom Co and Skagit Co in the heart of the North Cascades National Park.