Big Creek Dam No. 1, also known as Huntington Lake No. 1, is a private-owned concrete dam located in Big Creek, California. Completed in 1917, this dam serves primarily for hydroelectric power generation and recreation purposes. Standing at a height of 170 feet and with a length of 1335 feet, the dam has a storage capacity of 89,800 acre-feet, providing essential water resources for the surrounding area.

Managed by the Federal Energy Regulatory Commission, Big Creek Dam No. 1 has a controlled spillway with a width of 110 feet and 15 slide gates for outlet control. The dam is situated on the Big Creek River and has a drainage area of 80.5 square miles. Despite its age, the dam has a high hazard potential and is classified as having a very high risk level.

With a rich history dating back over a century, Big Creek Dam No. 1 remains a significant engineering feat in the region, showcasing the importance of water resource management and climate resiliency in California. As a vital piece of infrastructure, this dam continues to play a crucial role in providing clean energy and water supply while ensuring public safety and environmental protection.