2011 Map of Sourdough Peak

About this map

Sourdough Creek and Johns Creek drain a complex network of high-elevation drainages in this part of Idaho County. The 2011 survey shows a landscape defined by its deep hydrological system, where tributaries like Snoose Creek and Aubion Creek feed into larger watercourses. Human imprint is minimal, represented primarily by the winding path of Sourdough Rd as it traverses the northern terrain. The presence of Twin Lakes Creek and Moores Lake Creek indicates the glacial character of the high country, where small mountain lakes serve as headwaters for the numerous named creeks. This map provides a clear record of the watershed patterns before subsequent landscape changes, documenting the exact flow of streams such as Frank Brown Creek and Boundary Creek near the eastern edge of the quadrangle.