1958 Map of Shadow Mountain

About this map

Grand Lake serves as the focal point for this mid-century survey, illustrating the complex water management systems established at the headwaters of the Colorado River. The landscape is defined by the hydraulic engineering of the Colorado-Big Thompson Project, featuring the Alva B Adams Tunnel and the Shadow Mountain Dam which created Shadow Mountain Lake. This infrastructure facilitates the movement of water across the Continental Divide, a significant feat of mid-century civil engineering. Beyond the dams and the Granby Pumping Plant, the map details a region transitioning into a major recreation hub. Extensive trail networks like the East Inlet Trail and Shadow Mountain Trail wind through Rocky Mountain National Park and the Arapaho National Forest, while administrative sites such as the Hilltop Ranger Sta and Twin Creek Ranger Sta anchor the wilderness management of the era.