The Rubicon Auxiliary dam, located in El Dorado County, California, is a key component of the state's water resource infrastructure. Built in 1963 by the renowned design firm Bechtel, this concrete gravity dam stands at a height of 13 feet and serves primarily for hydroelectric power generation. With a storage capacity of 1439 acre-feet and a maximum discharge of 13000 cubic feet per second, the dam plays a crucial role in regulating water flow from the Feather River.

Managed by the Public Utility, the Rubicon Auxiliary dam is subject to extensive state regulation and inspection to ensure its structural integrity and safe operation. The dam's low hazard potential and moderate risk assessment underscore the importance of ongoing monitoring and maintenance efforts. In addition to its primary function of hydroelectric power generation, the dam also provides recreational opportunities for the surrounding area, making it a valuable asset for both water resource management and local community engagement.

As a part of the Federal Energy Regulatory Commission's jurisdiction, the Rubicon Auxiliary dam symbolizes the intersection of federal oversight and state-level cooperation in ensuring the safety and sustainability of water resources in California. With its strategic location in Folsom and proximity to the city's infrastructure, the dam serves as a critical piece of the region's water management system. Its historical significance, modern design, and multi-purpose utility make the Rubicon Auxiliary dam a fascinating subject for water resource and climate enthusiasts alike.