Folsom Left Wing is a significant federal-owned structure located in Folsom, California, along the American River. Built in 1955 by the Bureau of Reclamation, this earth dam stands at a towering height of 145 feet, with a primary purpose of flood risk reduction. It also serves as a source for hydroelectric power, irrigation, recreation, and water supply, showcasing its multi-faceted role in managing water resources in the region.

With a storage capacity of 1,120,000 acre-feet, Folsom Left Wing plays a crucial role in water management, particularly during times of high discharge and potential flooding. Despite its high hazard potential, the condition assessment of the dam is currently not available, highlighting the need for ongoing monitoring and maintenance to ensure its structural integrity. The dam lacks a spillway, showcasing the engineering design to mitigate flood risks and manage water levels effectively.

As a key component in the water infrastructure of the region, Folsom Left Wing serves as a vital resource for flood protection and water management along the American River. Its strategic location and multi-purpose design make it a critical asset for ensuring water security and mitigating risks in the face of changing climate patterns and extreme weather events.