2018 Map of Devils Nose

About this map

Porter and Lily Valley sit within a landscape defined by the deep canyons of the North Fork Mokelumne River and the Middle Fork Mokelumne River. This high-country region on the border of Amador and Calaveras Counties is dominated by the sprawling timberlands of the Eldorado National Forest and Stanislaus National Forest. The map documents a rugged interior geography where water management and logging infrastructure are primary features, evidenced by the Tiger Cr Regulation Reservoir and the winding Tiger Cr Conduit. Prominent topographic landmarks such as Devils Nose, Bald Mtn, and the high reach of Panther Ridge rise above the river forks. Local travel is marked by a network of forest routes and named flats like Boston Flat and Hunter Flat, reflecting the area's history of resource extraction and high-altitude grazing in places like Whitmore Meadow.