Patterson Dam, located in El Dorado County, California, is a privately owned structure primarily used for water supply purposes, including irrigation and recreation. Completed in 1960, this earth dam stands at a height of 37 feet and has a storage capacity of 350 acre-feet. Situated on Deadman Creek, the dam serves as a vital resource for the local community while also providing opportunities for recreational activities.

Managed by the Natural Resources Conservation Service, Patterson Dam is regulated by the California Department of Water Resources for safety and enforcement. With a high hazard potential, the dam undergoes regular inspections to ensure its structural integrity. Despite its age, the condition assessment in 2017 deemed the dam to be satisfactory, providing a sense of security to nearby residents and stakeholders.

Although Patterson Dam has not undergone significant modifications in recent years, its emergency action plan is up to date as of March 2021. With a focus on safety and risk management, the dam continues to play a crucial role in water resource management in the region, highlighting the importance of infrastructure maintenance and preparedness in the face of climate variability and increasing water demands.