2023 Map of Cayuse Mountain

About this map

Okanogan National Forest dominates the high country of north-central Washington in this topographic survey, where a series of steep drainages feed the larger water systems of the region. The landscape is defined by the prominent Cayuse Mtn and the long expanse of Fourth of July Ridge, which together channel the various branches of Siwash Creek. To the south, the terrain opens into the Aeneas Valley, a significant topographical break where Aeneas Valley Rd follows the path of Peony Creek. The map shows a transition from the high-elevation forest and ridgelines to more level ground at Bigham Flats. This network of forest service roads and local routes like Island Mountain Rd reveals the modern accessibility of these remote highlands, illustrating how contemporary infrastructure overlays the original geological contours of the Bonaparte Creek watershed.