Swanzy Lake, located in Vallejo, California, is a local government-owned reservoir that serves as a crucial water supply for irrigation and domestic use in the region. Completed in 1931, this earth dam has a height of 86 feet and a storage capacity of 107 acre-feet, making it a significant water resource for the community. The dam sits on the Tr Carquinez Str river and is regulated by the California Department of Water Resources for safety and inspection.

With a surface area of 4 acres and a drainage area of 0.1 square miles, Swanzy Lake plays a vital role in managing water resources in Solano County. Despite its high hazard potential, the dam's condition is assessed as satisfactory, with regular inspections to ensure its stability and safety. The emergency action plan for the reservoir was last revised in 2017, demonstrating a commitment to preparedness and risk management in the face of potential hazards.

For water resource and climate enthusiasts, Swanzy Lake stands as a testament to the careful management and regulation of water infrastructure in California. As a key source of water supply for the region, this reservoir highlights the importance of maintaining and monitoring dams to ensure the safety and sustainability of water resources for future generations. The collaborative efforts between local government agencies and the Department of Water Resources exemplify a commitment to responsible water management in the face of changing climate conditions.