Nine Mile Dam, Hydroelectric dam in Nine Mile Falls, Washington, United States.
The Nine Mile Dam spans 58 feet high across the Spokane River, featuring cyclopean masonry construction and a powerhouse on a basalt bluff.
The New York engineering firm Sanderson & Porter constructed the dam in 1908 to supply power for the Spokane and Inland Empire Railroad interurban lines.
Ten residential brick cottages built in 1928 near the dam display Craftsman and English Cottage architectural elements with large front porches.
The Nine Mile Dam continues its hydroelectric operations under Avista company management, forming the Nine Mile Reservoir on the Spokane River.
Each worker cottage contains three bedrooms, arranged along a tree-lined road leading to the powerhouse, reflecting the early industrial development period.
Location: Spokane County
Architectural style: bungalow
GPS coordinates: 47.77580,-117.54600
Latest update: March 5, 2025 03:00
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