2020 Map of Irvine Hill

About this map

Salish Mountains terrain dominates this 2020 topographic study of Lake County, Montana, where the high ridges of Irvine Hill overlook a complex network of drainages and ranching corridors. The map details the transition from the steep elevations of Garcon Gulch and Oliver Gulch down toward the eastern plateau of Irvine Flats. This area is defined by its watercourses, including Irvine Cr and White Earth Cr, which carve through the landscape. The human presence is mapped through a series of named rural routes such as Irvine Flats Rd and Spring Ranch Ln, reflecting a sparse, high-country settlement pattern centered on the flatlands between mountain ranges. These roads follow natural contours, providing access to remote locations like Garceau Gulch Rd and Pickett Rd near the Vinson Cr headwaters.