Big Dam, also known as Big, is a gravity-type structure located in Lake County, Oregon. Built in 1966 by the Bureau of Land Management, this federal-owned dam serves as a vital water supply source for the area. Standing at a height of 10 feet with a length of 420 feet, Big Dam has a storage capacity of 875 acre-feet, with a normal storage level of 674 acre-feet. Despite its low hazard potential and fair condition assessment, the dam undergoes inspections every five years to ensure its safety and reliability.

Situated on the TRIB BIG LAKE stream, Big Dam plays a crucial role in managing water resources in the region. With a surface area of 640 acres and a maximum discharge rate of 31 cubic feet per second, the dam contributes to the overall water management strategy in Oregon. Although it lacks certain regulatory features like spillways and outlet gates, Big Dam continues to provide essential water supply services to the community while being monitored by the Bureau of Land Management for any necessary maintenance or improvements.

As a key asset owned and operated by the federal government, Big Dam exemplifies the importance of sustainable water resource management in the face of changing climate conditions. With its historical significance and ongoing relevance in the region, this gravity dam stands as a testament to the collaborative efforts between various agencies and stakeholders to safeguard water security for both current and future generations.