1993 Map of Big Sage Reservoir

About this map

Modoc National Forest dominates this high-altitude landscape, centered on the expansive waters of Big Sage Reservoir. The map reveals a complex water management system within the arid terrain, featuring Big Sage Dam and several smaller catchments like Kelley Reservoir and Essex Reservoir. To the south, the Devils Garden Conservation Camp sits near the headwaters of West Rock Creek, while the western edge is defined by the sharp drop-off of Porcupine Rim overlooking Porcupine Valley. The presence of several stock ponds and named springs like Mill Springs underscores the area's importance for livestock and resource management. The terrain is further characterized by dramatic features such as Whittemore Ridge and the deep cut of Salisbury Gulch, illustrating the transition from volcanic plateaus to riparian basins.