1952 Map of Sly Park

About this map

Grizzly Flat and the surrounding timberlands of the Eldorado National Forest define this mid-century view of the Sierra Nevada foothills. The landscape is in transition, notably marked by the planned expansion of Jenkinson Lake following the construction of the Sly Park Dam. Purple revisions indicate areas to be submerged, providing a specific record of the original terrain before the reservoir reached its full extent. Hardrock mining history is evident across the ridges, with numerous workings like the Hazel Creek Mine, Mt Hope Mine, and Blue Gouge Mine scattered between the drainages of Weber Creek and the North Fork Cosumnes River. Traditional water infrastructure is represented by the Crawford Ditch and a complex system of siphons and flumes, illustrating the intensive management of water for local industry and agriculture. High-elevation vantage points like Baltic Peak oversee a network of forest service sites, including the Sly Park Guard Station and Spring Flat.