Spectacle Lake Dike in Okanogan, Washington, is a vital federal irrigation structure managed by the Bureau of Reclamation. Completed in 1969, this earth dam stands at a height of 25 feet and stretches 1100 feet in length, providing essential water storage for irrigation purposes. With a normal storage capacity of 13,450 acre-feet and a maximum storage of 14,080 acre-feet, the dam plays a crucial role in water management in the region.

Situated on the Okanogan River, Spectacle Lake Dike not only supports irrigation but also offers recreational opportunities. With a surface area of 399 acres and a drainage area of 5 square miles, the dam contributes to the local ecosystem and provides a scenic backdrop for outdoor activities. Despite its low hazard potential, the dam is regularly inspected by the Bureau of Reclamation to ensure its structural integrity and safety.

As a key component of the region's water infrastructure, Spectacle Lake Dike underscores the importance of sustainable water resource management and climate resilience. The dam's role in supporting agriculture and recreation highlights the interconnectedness of water resources and the environment, emphasizing the need for ongoing maintenance and monitoring to safeguard against potential risks.