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441:, creating voids. Later, in July of the same year, as the ground thawed, two cracks formed near the spillway and portions of the dam filled the void. The dam was deemed unsafe and a taller embankment dam was constructed just downstream. Construction and rehabilitation was carried out until 1966. In 1997 the
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The dam is 26 ft (7.9 m) tall and 555 ft (169 m) long. It is filled with 5,000 cu yd (3,800 m) sand, gravel and earth and its crest is 875 ft (267 m) above sea level. The reservoir created by the dam, Eklutna Lake, covers 3,247 acres (1,314 ha) and is
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7 mi (11 km) long. At an elevation of 867.5 ft (264.4 m), the reservoir holds 182,000 acre⋅ft (224,000,000 m) of water. To connect the reservoir and power plant, there is a 9 ft (2.7 m) diameter, 4.46 mi (7.18 km) long
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authorized the project on 31 July 1950. Construction began in 1951 and raising the dam commenced the following year. The first generator was commissioned on 8 January 1955, the second and last on 1 April 1955. On 1 July 1955 the entire project was complete. The
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power generation and it supports a 47 MW power plant. It was first completed in 1929 but was rehabilitated or rebuilt on several occasions over its history. Ownership of the dam and power plant is shared by
Chugach Electric and Matanuska Electric.
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sold the dam and power plant to
Anchorage Municipal Light and Power, Chugach Electric Association and Matanuska Electric Association for US$ 6 million. Chugach Electric acquired Anchorage Municipal Light and Power in 2020.
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409:. The lake dam was rebuilt and improved in 1941 after the previous structure failed. During this same year, the population in Anchorage increased greatly with the onset of
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The original dams and power plant was the idea of businessman Frank Reed. It was constructed by the
Anchorage Light and Power Company between 1927 and 1929 atop a natural
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in March 1964 caused significant damage to the dam, particularly the water intake for the power plant. The intake shifted towards the lake and frozen
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which starts at the intake, located on the northwest corner of the lake. From the intake, water rushes down the penstock where it reaches two 23.5
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proposed the
Eklutna Project. It included raising the dam and installing a new power plant opposite Goat Mountain to the north, along the
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551:"Effect of the Earthquake Of March 27, 1964, on The Eklutna Hydroelectric Project, Anchorage, Alaska"
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in the
Eklutna Valley. It regulated the river to the Lower Eklutna Dam which diverted water into the
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523:"Eklutna, Snettisham hydro projects still haven't redressed fish and wildlife damages"
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610:"2021 Proposed Utility/Enterprise Activities Budgets"
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762:Buildings and structures in Anchorage, Alaska
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586:. U.S. Bureau of Reclamation. Archived from
413:. To cope with increasing power demand, the
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240:182,000 acre⋅ft (224,000,000 m)
556:. U.S. Geological Survey. Archived from
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767:United States local public utility dams
752:Energy infrastructure completed in 1955
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757:Hydroelectric power plants in Alaska
388:. The primary purpose of the dam is
219:5,000 cu yd (3,800 m)
162:Chugach Electric, Matanuska Electric
497:. Chugach Electric Association, Inc
415:United States Bureau of Reclamation
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59:Location of Eklutna Dam in Alaska
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615:. Anchorage Hydropower Utility
521:Sinnott, Rick (21 June 2013).
1:
747:1955 establishments in Alaska
264:867.5 ft (264.4 m)
208:Elevation at crest
712:GPX (secondary coordinates)
434:beneath and near the dam's
248:3,247 acres (1,314 ha)
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549:Logan, Malcolm H. (1967).
360:, also referred to as the
295:61.4752667°N 149.1499250°W
107:61.4041056°N 149.1500667°W
707:GPX (primary coordinates)
682:Map all coordinates using
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26:
690:Download coordinates as:
300:61.4752667; -149.1499250
211:875 ft (267 m)
203:555 ft (169 m)
192:Height (foundation)
112:61.4041056; -149.1500667
16:Dam in Anchorage, Alaska
671:Renewable energy portal
428:Great Alaska earthquake
407:Old Eklutna Power Plant
346:Installed capacity
324:Conventional, diversion
195:26 ft (7.9 m)
139:Construction began
33:The Eklutna Power Plant
742:Dams completed in 1955
525:. Alaska Dispatch News
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458:Inside the power plant
443:Alaska Power Authority
423:United States Congress
256:7 mi (11 km)
702:GPX (all coordinates)
584:"The Eklutna Project"
582:Simonds, Joe (1995).
495:"Eklutna Power Plant"
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261:Normal elevation
173:Type of dam
311:Commission date
590:on 13 December 2014
563:on 13 December 2014
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269:Eklutna Power Plant
253:Maximum length
237:Total capacity
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366:Upper Eklutna Dam
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245:Surface area
167:Dam and spillways
149:Opening date
80:Anchorage, Alaska
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286:149°8′59.73″W
283:61°28′30.96″N
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154:Raising: 1955
152:Initial: 1929
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144:Raising: 1952
142:Initial: 1927
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95:61°24′14.78″N
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657:Water portal
617:. Retrieved
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592:. Retrieved
588:the original
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565:. Retrieved
558:the original
527:. Retrieved
499:. Retrieved
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411:World War II
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339:Francis-type
232:Eklutna Lake
98:149°9′0.24″W
619:26 February
594:13 December
567:13 December
529:13 December
501:13 December
358:Eklutna Dam
298: /
274:Coordinates
134:Operational
110: /
86:Coordinates
22:Eklutna Dam
726:Categories
478:References
419:Knik River
397:Background
177:Embankment
439:densified
378:Anchorage
334:2 x 23.5
224:Reservoir
465:penstock
436:spillway
432:alluvium
368:, is an
330:Turbines
182:Impounds
159:Owner(s)
76:Location
372:on the
229:Creates
123:Purpose
68:Country
450:Design
421:. The
382:Alaska
200:Length
131:Status
613:(PDF)
561:(PDF)
554:(PDF)
350:47 MW
126:Power
621:2023
596:2014
569:2014
531:2014
503:2014
356:The
320:Type
314:1955
697:KML
380:in
364:or
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539:^
511:^
486:^
469:MW
384:,
336:MW
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
