Folsom Dike 4 is a crucial federal structure located in Folsom, California, along the American River. Built in 1956 by the Bureau of Reclamation, this earth dam stands at 30 feet in height and spans a length of 1450 feet. Its primary purpose is flood risk reduction, with additional functions including hydroelectric power generation, irrigation, recreation, and water supply.

With a storage capacity of 1,120,000 acre-feet and a surface area of 11,180 acres, Folsom Dike 4 plays a significant role in managing water resources in the region. Despite its high hazard potential, the dam has not undergone a recent condition assessment, raising concerns about its long-term safety and maintenance requirements. However, the Bureau of Reclamation remains responsible for the regulatory oversight, inspections, and operations of the structure.

As a critical component of the water infrastructure in Placer County, Folsom Dike 4 requires continued monitoring and risk management measures to ensure its effectiveness in flood control and water supply management. Given its location in a high-risk area and the absence of recent inspections, stakeholders and climate enthusiasts must advocate for regular assessments and maintenance to safeguard the surrounding communities and ecosystems from potential disasters.