Swift No. 1 is a private hydroelectric dam located in Cougar, Washington, along the Lewis River. Completed in 1958, this earth dam stands at a height of 412 feet and has a maximum storage capacity of 755,500 acre-feet. With a surface area of 4,620 acres and a drainage area of 477 square miles, Swift No. 1 plays a crucial role in flood risk reduction, hydroelectric power generation, and recreational activities in the region.
Managed by the Federal Energy Regulatory Commission, Swift No. 1 has a controlled spillway with a width of 100 feet and two Tainter radial gates for regulated water discharge. The dam's hazard potential is rated as high, with a very high risk assessment score. While the condition assessment is not available, the emergency action plan was last revised in February 2021, highlighting the importance of preparedness and risk management for such critical infrastructure.
Overall, Swift No. 1 serves as a significant water resource and climate resilience asset in Skamania County, Washington. Its strategic location and design contribute to managing water resources efficiently, generating clean energy, and providing recreational opportunities while addressing potential hazards and risks associated with dam operations. For water resource and climate enthusiasts, Swift No. 1 offers a compelling case study of sustainable water infrastructure development and management in the Pacific Northwest.
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