Diablo Dam, Arch dam and power station in Whatcom County, United States
The Diablo Dam extends 360 meters across the Skagit River, incorporating neoclassical architectural elements into its concrete structure and powerhouse facilities.
Completed in 1930, the Diablo Dam stood as the highest dam worldwide during its construction period and marked a significant advancement in hydroelectric engineering.
The Diablo Dam represents the industrial heritage of the Pacific Northwest through educational programs, guided tours, and displays about power generation methods.
Seattle City Light maintains the facility as part of the Skagit River Hydroelectric Project, generating 159.3 megawatts of electricity for regional power distribution.
The impoundment creates Diablo Lake, which displays green-blue water due to suspended glacial sediments from the surrounding North Cascades mountains.
Location: Whatcom County
Inception: 1930
Architectural style: neoclassicism
Length: 360 m
Part of: Skagit River Hydroelectric Project
GPS coordinates: 48.71430,-121.13100
Latest update: May 14, 2025 23:36
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