1968 Map of Nevada Mountain

About this map

The Continental Divide snake-like through this portion of the Helena National Forest, marking the boundary between the Missouri and Columbia River watersheds. At the center of this 1968 field-checked survey stands Nevada Mountain, a prominent high point surrounded by a network of drainage systems including Poorman Creek and Nevada Creek. The map documents a landscape defined by its extractive and transit history, featuring the Cyclone Mine near the headwaters of South Fork Poorman Creek. Transportation is largely restricted to the historic Gould Helmville Trail and various unnamed Jeep Trails, illustrating the area's isolation along the county line between Lewis and Clark and Powell Counties. Numerous gulches like Beartrap Gulch and Little Davis Gulch feed into the larger creek systems, while the presence of scattered mines indicates the persistent legacy of mineral exploration in these highlands.