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- Q6693191 subject Q13237956.
- Q6693191 subject Q8321869.
- Q6693191 subject Q8326416.
- Q6693191 subject Q8733628.
- Q6693191 subject Q8875001.
- Q6693191 subject Q8875311.
- Q6693191 abstract "The Lowell Creek Diversion Tunnel is a flood control project located in Seward, Alaska, United States. The project was constructed to alleviate flooding of Lowell Creek in Seward. It was the first flood control project completed by the United States Army Corps of Engineers in Alaska.Originally, Lowell Creek ran through Seward along what is now Jefferson Street. Beginning with the town's establishment in 1903, the fast-moving stream produced one to three severe floods a year until the tunnel was built in 1939. The floods carried large amounts of debris from the mountains; one flood deposited 10,000 cubic yards in an 11 hour period in 1935.In 1927 the Alaska Railroad constructed a small diversion dam and flume to carry debris down Jefferson Street to drain into Resurrection Bay. However, by 1937 these structures had deteriorated beyond repair. Consequently, the Army Corps of Engineers began construction of the new project in August 1939. The project consisted of: a diversion dam, 400 feet (120 m) in length and up to 25 feet (7.6 m) high that diverted the creek away from its original path;a tunnel through Bear Mountain, 2,068 feet (630 m) in length and 10 feet (3.0 m) in width;an outlet flume, 109 feet (33 m) in length and 10 feet (3.0 m) in width which drains into Resurrection Bay.Completed in 1940, this system withstood the 1964 Alaska earthquake, as well as severe floods in 1966, 1986, and 1995, which brought the water level within inches of cresting the dam.Though the project has prevented significant flooding of the city of Seward, debris continues to accumulate at the outlet of the flume and the city must work to move the debris further into the bay. With the significant risk of debris accumulation during a flooding event, new projects are being considered to replace the diversion tunnel — including construction of a new, wider tunnel through Bear Mountain at a cost of $30 million, or an aqueduct underneath Jefferson Street.".
- Q6693191 added "1977-11-23".
- Q6693191 location Q79919.
- Q6693191 nrhpReferenceNumber "77001577".
- Q6693191 thumbnail SewardWithLowellCreekOutfall.png?width=300.
- Q6693191 wikiPageWikiLink Q1049334.
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- Q6693191 wikiPageWikiLink Q1235460.
- Q6693191 wikiPageWikiLink Q13237956.
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- Q6693191 wikiPageWikiLink Q18870689.
- Q6693191 wikiPageWikiLink Q30.
- Q6693191 wikiPageWikiLink Q3571153.
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- Q6693191 wikiPageWikiLink Q6976483.
- Q6693191 wikiPageWikiLink Q749610.
- Q6693191 wikiPageWikiLink Q797.
- Q6693191 wikiPageWikiLink Q79919.
- Q6693191 wikiPageWikiLink Q8321869.
- Q6693191 wikiPageWikiLink Q8326416.
- Q6693191 wikiPageWikiLink Q8733628.
- Q6693191 wikiPageWikiLink Q8875001.
- Q6693191 wikiPageWikiLink Q8875311.
- Q6693191 yearOfConstruction "1940".
- Q6693191 added "1977-11-23".
- Q6693191 built "1940".
- Q6693191 location Q79919.
- Q6693191 location "Lowell Canyon Road &".
- Q6693191 location "Lowell Point Road,".
- Q6693191 name "Lowell Creek Diversion Tunnel".
- Q6693191 refnum "77001577".
- Q6693191 point "60.10388888888889 -149.4525".
- Q6693191 type Place.
- Q6693191 type ArchitecturalStructure.
- Q6693191 type Building.
- Q6693191 type Location.
- Q6693191 type Place.
- Q6693191 type Thing.
- Q6693191 type SpatialThing.
- Q6693191 type Q41176.
- Q6693191 comment "The Lowell Creek Diversion Tunnel is a flood control project located in Seward, Alaska, United States. The project was constructed to alleviate flooding of Lowell Creek in Seward. It was the first flood control project completed by the United States Army Corps of Engineers in Alaska.Originally, Lowell Creek ran through Seward along what is now Jefferson Street.".
- Q6693191 label "Lowell Creek Diversion Tunnel".
- Q6693191 lat "60.10388888888889".
- Q6693191 long "-149.4525".
- Q6693191 depiction SewardWithLowellCreekOutfall.png.
- Q6693191 name "Lowell Creek Diversion Tunnel".