Sawmill Main is a rockfill dam located in the beautiful Sawmill Campground area in California. Built in 1910, this dam serves multiple purposes including irrigation, hydroelectric power generation, recreation, and water supply. Managed by a public utility, Sawmill Main is regulated by the California Department of Water Resources and the Safety of Dams agency, ensuring its safety and compliance with state regulations.

With a height of 60 feet and a length of 380 feet, Sawmill Main holds a storage capacity of 3030 acre-feet and covers a surface area of 113 acres. The dam stands on rock foundations and features a multi-arch core design. Despite its age, Sawmill Main has a low hazard potential and a high risk assessment rating, prompting regular inspections every three years to ensure its structural integrity and safety protocols.

Sawmill Main stands as a testament to early 20th-century engineering and continues to play a vital role in water management in the region. Its picturesque location and diverse uses make it a significant landmark for water resource and climate enthusiasts, highlighting the intersection of infrastructure, sustainability, and natural beauty in California's landscape.