2021 Map of Silva Flat Reservoir

About this map

Modoc National Forest and Lassen National Forest converge in this high-altitude landscape dominated by complex water management and rugged volcanic terrain. The northern reaches are anchored by Hayden Hill, featuring the Hayden Hill Cem and proximity to Preston Canyon. This area is defined by an extensive network of reservoirs, including the central Silva Flat Reservoir and the twin Log Cabin Reservoir Number 1 and Log Cabin Reservoir Number 2 further south. These impoundments, along with named waterholes like Shider Waterhole and Buckhorn Waterhole, suggest a landscape intensely managed for livestock or resource extraction. The southern portion of the map transitions through Sheep Valley toward the heights of Negro Mtn and Indian Mtn, while Coyote Reservoir and Corral Valley Reservoir mark the drainage patterns across the Modoc-Lassen border.