2020 Map of Patterson Canyon

About this map

Lewis & Clark National Forest encompasses much of the high ground in this area, where the Big Snowy Mountains and Little Snowy Mountains meet. The geography is defined by deep drainage patterns and ridges, with Patterson Canyon and Horsethief Canyon cutting through the terrain. Evidence of high-altitude water sources includes McLean Lake and the headwaters of S Fork Flatwillow Cr. Travel through this remote part of Golden Valley County is largely restricted to the Big Snowy Trail and a sparse network of mountain roads such as Red Hill Rd and Metzger Rd. The map illustrates a landscape primarily shaped by natural topography rather than human settlement, with features like Dry Ashley Gulch and Ashley Coulee marking the lower elevations to the south.