Hillside, also known as South Lake, is a privately-owned hydroelectric dam located in Bishop, California. Built in 1910 by designers Manifold and Poole, this rockfill dam stands at a height of 81.5 feet and has a storage capacity of 12,883 acre-feet. With a primary purpose of hydroelectric power generation, the dam also serves for recreational activities in the area.

Regulated by the California Department of Water Resources and inspected regularly by the Federal Energy Regulatory Commission, Hillside poses a high hazard potential due to its location on the South Fork Bishop Creek. The dam features an uncontrolled spillway and has a maximum discharge capacity of 1,700 cubic feet per second. Despite its age, Hillside's risk assessment is considered moderate, with emergency action plans in place to mitigate potential hazards.

Although its condition assessment is currently unavailable, Hillside remains a vital water resource infrastructure in Inyo County. With its scenic location and historical significance, this dam continues to play a crucial role in balancing water management, hydroelectric power generation, and recreational opportunities in the region. As climate change impacts water resources, the maintenance and monitoring of dams like Hillside become increasingly important for sustainable water management practices.