Seven Mile Dam, Hydroelectric gravity dam near Trail, Canada
Seven Mile Dam is a concrete gravity structure that spans 347 meters across the Pend d'Oreille River. The facility uses the weight of the concrete and water pressure to hold back the river while generating power from the flow downstream.
The dam was constructed between 1975 and 1979 to meet growing electricity demands in British Columbia. Its completion added significant generating capacity to the province's hydroelectric network.
The dam represents Canadian engineering excellence in renewable energy production, contributing to the region's shift toward sustainable power sources.
Access to the dam is limited because it is an active power facility. Check ahead before visiting, as tours or viewpoints may have restricted hours or require special permission.
The facility coordinates operations with Waneta Dam under the Canal Plant Agreement to maximize water resource efficiency in the Columbia River system.
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