2018 Map of Ascension Mountain

About this map

Harden Flat serves as a central point of activity within the Stanislaus National Forest, where the intersection of Hardin Flat Rd and the historic Big Oak Flat Rd marks a gateway to the high sierra. This 2018 survey illustrates the complex water management infrastructure of the region, notably tracing the Hetch Hetchy Aqueduct as it traverses the Gravel Range near Jones Meadow. The landscape is defined by the deep drainages of the Middle Tuolumne River and the S Fork Tuolumne River, which carve through the high country between peaks like Sawmill Mountain and Ascension Mtn. To the south, the terrain drops toward the N Fork Merced River, with the boundary between Tuolumne and Mariposa counties following the high ground of Pilot Ridge. Historical travel routes such as Old Yosemite Rd and Coulterville Rd remain visible, providing a clear picture of the legacy road network through Crocker Meadow and the Big Creek Basin.