1983 Map of Silva Flat Reservoir

About this map

Silva Flat Reservoir anchors a high-elevation landscape within the Modoc National Forest near the Lassen and Modoc county line. This early 1980s survey reveals a territory defined by an extensive network of water management, ranging from the large Coyote Reservoir to smaller stock and catchment basins like Deadhorse Reservoir and Tire Body Reservoir. The presence of the Cem and Prospect near Hayden Hill in the northeast corner points to the area's history of mineral extraction and early settlement. Named features such as Ollie Rivis Spring and Bunselmeier Spring indicate a reliance on natural water sources for cattle or camps, while the State Game Refuge designation across much of the terrain reflects a 20th-century focus on conservation and wildlife management.