Milton Main is a significant water resource and climate enthusiast's dream located in Woolsey Flat, California, along the Middle Yuba River. Constructed in 1927, this arch dam stands at 37 feet in height and boasts a storage capacity of 295 acre-feet. Its primary purpose is for water supply, with additional functions including hydroelectric power generation, irrigation, and recreation.

Owned by a public utility and regulated by the Department of Water Resources (DWR) and the Safety of Dams agency in California, Milton Main has a low hazard potential but a moderate risk assessment. The dam features an uncontrolled spillway, with a width of 245 feet, and underwent its last inspection in September 2019. The dam's condition assessment is currently unavailable, but an emergency action plan (EAP) has been prepared and updated periodically.

Overall, Milton Main serves as a vital infrastructure for water management in the region, providing essential services while also offering recreational opportunities. With its historical significance and ongoing maintenance, this dam represents a key component of California's water resource management efforts, showcasing the intersection of engineering, environmental stewardship, and public safety in a changing climate landscape.