Lake Bordeaux, a private water supply reservoir located in Aetna Springs, California, serves the primary purpose of irrigation and water supply. Built in 1962, this earth dam stands at a height of 43 feet with a hydraulic height of 38.5 feet. The reservoir has a storage capacity of 538 acre-feet and covers a surface area of 39 acres, drawing water from Tr Bucksnort Creek.

Managed by the California Department of Water Resources, Lake Bordeaux is regulated, permitted, inspected, and enforced for safety by state authorities. Despite its low hazard potential, the dam's condition as of September 2017 was reported as satisfactory. With a drainage area of 0.7 square miles and a maximum discharge capacity not specified, the reservoir plays a crucial role in securing water resources in the region.

For water resource and climate enthusiasts, Lake Bordeaux offers a fascinating case study of a well-maintained private reservoir contributing to irrigation and water supply needs in Lake County, California. Its strategic location, efficient design, and state-regulated operations highlight the importance of sustainable water management practices in ensuring reliable water sources for agricultural and domestic use in the region.