Milstead is a private hydroelectric dam located in Rockdale, Georgia, along the Yellow River. Completed in 1925, this gravity dam stands at 17 feet tall with a hydraulic height of 43 feet and a length of 256 feet. The dam has a storage capacity of 225 acre-feet and serves the primary purpose of generating hydroelectric power. Managed by the Federal Energy Regulatory Commission, Milstead has a low hazard potential and moderate risk assessment rating.

With a maximum discharge of 4704 cubic feet per second and an uncontrolled spillway width of 196 feet, Milstead plays a crucial role in water resource management in the region. The dam covers a surface area of 18 acres and has a drainage area of 210 square miles. Despite its age, Milstead has not undergone recent condition assessments, but its emergency action plan was last revised in December 2019. The dam is not owned or regulated by the state of Georgia and does not require state permitting, inspection, or enforcement.

Milstead's historical significance, structural features, and operational purpose make it a notable site for water resource and climate enthusiasts. As a privately owned hydroelectric facility, Milstead contributes to the region's renewable energy production while also providing flood control and water storage benefits. Its location along the Yellow River and affiliation with the Federal Energy Regulatory Commission highlight the interconnectedness of water infrastructure, energy generation, and environmental stewardship in the area.