1986 Map of Silica Mtn

About this map

The Calapooya Divide serves as the dominant geographic spine of this mid-1980s landscape, marking the high-elevation boundary between the Lane Co and Douglas Co line. This region is characterized by deep drainage basins and prominent summits, including Silica Mtn, Snow Peak, and Huckleberry Mtn. The hydrology is particularly complex, defined by the headwaters of numerous waterways such as Mosby Creek, Sharps Creek, and the West and East Forks of various local drainages. Within the Umpqua National Forest, the map captures the footprint of logging and resource extraction during the late twentieth century, indicated by a network of unimproved roads and several scattered Quarry sites. Notable landmarks like Huckleberry Spring and Holderman Mtn offer specific points of reference for those studying the forest management patterns and topographic history of this part of the Cascades.