1979 Map of Trask Mtn

About this map

The Tillamook State Forest and Siuslaw National Forest dominate this landscape, illustrating the heavy timber and water management infrastructure of the late 1970s. The terrain is defined by the ridge lines of Trask Mountain and Sheridan Peak, which serve as the headwaters for several significant drainage systems. The North Fork Yamhill River flows through the northeast, while the Nestucca River snakes through the southern reaches. Human activity is concentrated along several logging-access routes like Grade Road and Boundary Road, connecting remote points such as the Headquarters settlement and Elk Flat. Local industry and land use are evident in the numerous labeled quarries and borrow pits scattered across the slopes, while the McGuire Reservoir stands as a major water resource for the surrounding Yamhill and Tillamook county areas.