San Joaquin No. 3 Forebay, located in North Fork, California, is a privately owned structure primarily used for hydroelectric purposes. This Earth dam, completed in 1906, stands at a height of 40 feet with a hydraulic height of 7 feet. With a storage capacity of 20 acre-feet and a normal storage level of 19 acre-feet, the forebay covers a surface area of 3 acres and has a maximum discharge capacity of 170 cubic feet per second.

Managed by the Federal Energy Regulatory Commission, the dam's hazard potential is classified as low, with a moderate risk assessment rating of 3. The structure features an uncontrolled spillway, 42 feet in width, and is subject to state regulations, inspections, and enforcement. Although the condition assessment is not currently available, the Emergency Action Plan was last revised in October 2020, ensuring preparedness for any unforeseen events.

With its historical significance dating back over a century, the San Joaquin No. 3 Forebay serves as a vital component in the region's water resource management and climate resilience efforts. Its strategic location on the North Fork Willow Creek contributes to the overall water infrastructure system in Madera County, playing a crucial role in supporting renewable energy production and environmental sustainability initiatives. As a part of ongoing maintenance and risk management measures, the forebay continues to be monitored and regulated by both state and federal agencies to ensure the safety and integrity of the dam for years to come.