Diablo is a captivating hydroelectric facility located in Newhalem/Diablo, Washington, along the Skagit River. Built in 1929, this concrete dam stands at an impressive height of 389 feet and has a normal storage capacity of 50,000 acre-feet. With a maximum discharge of 105,300 cubic feet per second, Diablo plays a crucial role in flood risk reduction, recreation, and providing a habitat for fish and wildlife.

Managed by the Federal Energy Regulatory Commission, Diablo's primary purpose is hydroelectric power generation. The dam features a controlled spillway with a width of 380 feet and 19 Tainter radial gates for water release. Despite its high hazard potential, the condition assessment and risk management measures for Diablo are not currently available, highlighting the need for continued monitoring and maintenance to ensure the safety and sustainability of this vital water resource.

For water resource and climate enthusiasts, Diablo offers a fascinating glimpse into the intersection of infrastructure, energy production, and environmental stewardship. As a key player in the Pacific Northwest's hydropower network, Diablo stands as a testament to the ingenuity and engineering prowess of its designer, Lars Jorgensen, while also serving as a reminder of the ongoing challenges and responsibilities associated with managing water resources in a changing climate.