Upper Lindsey is a private hydroelectric dam located in California, specifically in the counties of Nevada and California. Built in 1870, this Earth dam stands at a height of 8 feet and has a hydraulic height of 5.5 feet. With a storage capacity of 1,736 acre-feet and a surface area of 85.4 acres, Upper Lindsey plays a crucial role in water resource management in the region.

Managed by the Federal Energy Regulatory Commission, Upper Lindsey is primarily used for hydroelectric purposes. The dam has a low hazard potential and a moderate risk assessment rating. Despite its age, the dam's condition assessment is not available, indicating a need for further evaluation to ensure its safety and efficiency in the face of climate change impacts on water resources.

Although the dam has not been modified in recent years, regular inspections by the Federal Energy Regulatory Commission ensure its continued operation and safety. With a maximum discharge of 600 cubic feet per second and a spillway width of 30 feet, Upper Lindsey remains a key structure in the management of water resources in the Lindsey Creek area.