Diamond A is a privately owned dam located in Owyhee, Idaho, along Cougar Creek and the Jarbidge River. Built in 1931, this earth dam stands at a height of 28.8 feet and has a hydraulic height of 26.3 feet. With a storage capacity of 3926 acre-feet and a surface area of 325 acres, Diamond A plays a crucial role in water resource management in the region.

Despite its age, Diamond A is in fair condition and has a low hazard potential, making it a reliable structure for water storage and flood control. The dam is regulated by the Idaho Department of Water Resources, which ensures regular inspections and maintenance to uphold its integrity. With a moderate risk assessment rating, Diamond A remains a vital component of the local water infrastructure, contributing to sustainable water management practices in the area.

Water resource enthusiasts and climate advocates can appreciate the significance of Diamond A in maintaining water quality and quantity in the Owyhee region. As a key structure along the Jarbidge River, this dam reflects the intersection of human engineering with natural water systems, highlighting the importance of responsible dam management in the face of climate change and evolving water resource challenges.