Big Blue Creek, also known as Big Blue Reservoir, is a privately owned water resource located in Owyhee, Idaho. This reservoir, completed in 1910, serves multiple purposes and has a storage capacity of 2,100 acre-feet. With a dam height of 34.4 feet and a hydraulic height of 28.5 feet, it plays a crucial role in managing the water resources of the area.

Managed by the Idaho Department of Water Resources, Big Blue Creek is regulated and inspected regularly to ensure its safety and functionality. The dam, primarily made of earth and stone, has a spillway width of 40 feet and an uncontrolled spillway type. Despite being classified as having a significant hazard potential, the dam is currently assessed to be in fair condition, with a moderate level of risk associated with its operation.

Water resource and climate enthusiasts can appreciate the historical significance and engineering marvel of Big Blue Creek. This reservoir, nestled in the remote wilderness of Idaho, stands as a testament to the ingenuity and foresight of early water management efforts in the region. As efforts continue to monitor and maintain its integrity, Big Blue Creek remains a vital component of the water infrastructure in Owyhee County, playing a key role in water supply and management for the surrounding area.