Lower Blue Lake, located in Alpine County, California, is a privately owned hydroelectric reservoir with a dam completed in 1885. The dam stands at a height of 40 feet and has a length of 1063 feet, providing a storage capacity of 5091 acre-feet of water. The reservoir covers an area of 198 acres and is fed by the Blue Creek, with a drainage area of 4.6 square miles.

Managed by the Federal Energy Regulatory Commission, Lower Blue Lake has a low hazard potential and a moderate risk assessment rating. The spillway of the dam is uncontrolled with a width of 60 feet, and the maximum discharge capacity is 1150 cubic feet per second. The dam is state-regulated and inspected, ensuring compliance with safety standards and enforcement measures.

Enthusiasts of water resources and climate will find Lower Blue Lake an intriguing site for its historical significance, hydroelectric purpose, and environmental impact. The reservoir serves as a vital water source in the region, contributing to the local ecosystem and providing renewable energy through its hydroelectric operations. With its picturesque location and regulated management, Lower Blue Lake offers a unique opportunity to explore the intersection of water management, energy production, and environmental stewardship in a changing climate landscape.