2011 Map of Obsidian

About this map

The Salmon River carves a central path through this Idaho landscape, where the settlement of Obsidian and the Idaho Rocky Mountain Ranch sit along the valley floor. State Highway 75 provides the primary transit artery, tracing the river's course as it passes through Decker Flat and past the mouth of Club Canyon. The map reveals a complex network of tributaries feeding into the main stem, including Fisher Creek, Fourth of July Creek, and Champion Creek. To the southwest, the Yellow Belly Lake Fish Barrier Dam at Yellow Belly Lake indicates modern conservation and water management efforts in this mountainous environment. This survey captures a moment in the early 21st century when the land use remains focused on ranching and the preservation of its drainage basins.