Английская Википедия:Glines Canyon Dam
Шаблон:Short description Шаблон:Use mdy dates Шаблон:Infobox dam
Glines Canyon Dam, also known as Upper Elwha Dam,[1] built in 1927, was a Шаблон:Convert high concrete arch dam built on the Elwha River within Olympic National Park, Clallam County, Washington.
It was located Шаблон:Convert upstream from the mouth of the Elwha River at the Strait of Juan de Fuca, and about 8 miles upriver from the Elwha Dam. It impounded Lake Mills reservoir. The dam was demolished in 2014 as part of the Elwha River ecosystem restoration project; as of 2015 it is the tallest dam ever to be intentionally breached. The Glines Canyon Dam was the largest dam removal ever.
History
The dam was built privately to generate electricity for industries and major military installations on the Olympic Peninsula, including lumber and paper mills in Port Angeles.
The Glines Canyon Hydroelectric Power Plant historic district, a Шаблон:Convert area comprising the dam, the powerhouse, and the water conveying system, was listed on the National Register of Historic Places in 1988.[2]
Effects of dam on river habitat and area ecology
Lacking passage for migrating salmon, Glines Canyon Dam blocked access by anadromous salmonids[3] to the upper 38 miles (61 km) of mainstem habitat and more than Шаблон:Convert of tributary habitat. The Elwha River watershed once supported salmon runs of more than 400,000 adult returns on more than Шаблон:Convert of river habitat. By the early 21st-century, fewer than 4,000 adult salmon returned each year.
Habitat restoration
Numerous groups lobbied Congress to remove the two dams on the river and restore the habitat of the river and its valley. The Elwha River Ecosystem and Fisheries Restoration Act of 1992 authorized the US Federal Government to acquire the Elwha Dam and Glines Canyon Dam hydroelectric power projects for decommissioning and demolition for habitat restoration.
The Elwha Ecosystem Restoration project started in September 2011 as work to demolish the nearby Elwha Dam began downstream. The final piece of the Glines Canyon Dam was removed August 26, 2014.[4] Now that the dam has been removed, the area that was under Lake Mills is being revegetated and its banks secured to prevent erosion and to speed up ecological restoration.
Gallery
-
-
-
Glines Canyon Dam (removed) from above, Oct 2014
-
Glines Canyon Dam (removed) from inside reservoir, Oct 2014
See also
References
Sources
- Шаблон:Cite book.
- Mapes, Lynda V. (2016). "Elway: Roaring Back to Life," The Seattle Times.
External links
- Glines Canyon Dam Removal Process - animation
- Glines Canyon Dam webcam and time lapse movie of removal project
- "Demolition dam: Why dismantle a huge river barrier?", BBC video
- Elwha River Restoration, National Park Service
- Шаблон:HAER
- Шаблон:Citation
Шаблон:NRHP in Olympic NP Шаблон:National Register of Historic Places in Washington Шаблон:Authority control
- Страницы с неработающими файловыми ссылками
- Английская Википедия
- Former dams
- Dams in Washington (state)
- Demolished buildings and structures in Washington (state)
- Demolished power stations in the United States
- National Register of Historic Places in Olympic National Park
- Buildings and structures in Clallam County, Washington
- Hydroelectric power plants in Washington (state)
- Dams on the National Register of Historic Places in Washington (state)
- Dams completed in 1927
- Energy infrastructure completed in 1927
- Buildings and structures demolished in 2014
- Historic American Engineering Record in Washington (state)
- Historic districts on the National Register of Historic Places in Washington (state)
- National Register of Historic Places in Clallam County, Washington
- 2014 disestablishments in Washington (state)
- 1927 establishments in Washington (state)
- Former power stations in Washington (state)
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
_from_above,_Oct_2014.JPG){kind=link}
_from_inside_reservoir,_Oct_2014.JPG){kind=link}