Cushman No 1, also known as Upper Cushman Dam, is a public utility hydroelectric facility located in Mason County, Washington.
Wind
Humidity
Completed in 1926, this arch dam stands at a height of 235 feet and has a structural height of 271.5 feet, with a storage capacity of 482,757 acre-feet. Situated on the North Fork Skokomish River, the dam serves the primary purpose of hydroelectric power generation, while also offering recreational opportunities in the surrounding area.
Owned and operated by a public utility agency, Cushman No 1 is regulated by the Federal Energy Regulatory Commission (FERC) and has a high hazard potential due to its location and design. With a drainage area of 95 square miles and a surface area of 4,010 acres, the dam plays a crucial role in water resource management in the region. Despite its age, the dam's condition assessment is not available, indicating a need for further evaluation and potential risk management measures to ensure its safety and stability in the face of changing climate conditions.
As a key feature in the Skokomish River watershed, Cushman No 1 represents a significant piece of Washington's water infrastructure. Its presence underscores the importance of sustainable water resource management and climate resilience in the face of increasing environmental pressures. With its blend of historical significance and modern functionality, Cushman No 1 continues to be a noteworthy site for water resource and climate enthusiasts alike.
Year Completed |
1926 |
Dam Length |
1111 |
Dam Height |
235 |
River Or Stream |
North Fork Skokomish River |
Primary Dam Type |
Arch |
Surface Area |
4010 |
Hydraulic Height |
250 |
Drainage Area |
95 |
Nid Storage |
482757 |
Structural Height |
271.5 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
272 |
| Location | Reservations | Toilets |
|---|---|---|
Camp Cushman
|
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Oxbow Rustic
|
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Brown Creek Horse Campground
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Brown Creek
|
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Lebar Horse Camp
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Le Bar Horse Camp
|
Headwaters- Includes All Tributaries To Confluence With North Fork Skokomish River
Headwaters To Confluence With North Fork Skokomish River
Headwaters- Includes All Tributaries Within Park To Olympic National Park Boundary
Headwaters- Includes All Tributaries And Excludes Flapjack Lakes To Confluence With North Fork Skokomish River
Headwaters- Includes All Tributaries Within Park To Confluence With North Fork Skokomish River