The Upper Salmon Falls A-Plant Diversion Dam, located in Twin Falls, Idaho, is a private hydroelectric facility with a concrete gravity dam completed in 1937 by EBASCO. The dam stands at 9 feet high and spans 1380 feet in length, with a normal storage capacity of 150 acre-feet and a maximum discharge of 84,000 cubic feet per second. Despite its low hazard potential, the dam is regulated by the Federal Energy Regulatory Commission and undergoes inspections every 3 years to ensure safety and compliance.

Situated on the Snake River, the Upper Salmon Falls Dam plays a crucial role in water resource management and power generation in the region. With a drainage area of 32,200 square miles, the dam contributes to the irrigation and flood control efforts in the area while also supporting renewable energy production. The risk assessment for the dam is rated as moderate, emphasizing the importance of ongoing monitoring and management strategies to mitigate potential hazards and ensure the continued functionality of the facility.

Overall, the Upper Salmon Falls A-Plant Diversion Dam represents a significant piece of infrastructure in Idaho's water resource and energy landscape. As a key player in the hydroelectric sector, the dam underscores the intersection of water management, climate resilience, and sustainable energy production. With a focus on safety, regulatory compliance, and risk management, the dam exemplifies the ongoing efforts to balance environmental protection and energy generation in the region.