A Comprehensive Plan for Responding to the Long-term Threat Created by the Eruption of Mount St. Helens, Washington PDF Download
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Author: United States. Department of the Army
Publisher:
ISBN:
Category : Saint Helens, Mount (Wash.)
Languages : en
Pages : 0
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Book Description
Author: United States. Department of the Army
Publisher:
ISBN:
Category : Saint Helens, Mount (Wash.)
Languages : en
Pages : 0
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Book Description
Author: United States. Department of the Army
Publisher:
ISBN:
Category : Saint Helens, Mount (Wash.)
Languages : en
Pages : 234
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Book Description
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Category : Environmental impact statements
Languages : en
Pages : 482
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Author:
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ISBN:
Category :
Languages : en
Pages : 562
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Book Description
Author: Connie Manson
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 420
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Book Description
Author: United States. Army. Corps of Engineers. Portland District
Publisher:
ISBN:
Category : Flood control
Languages : en
Pages : 346
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Author:
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ISBN:
Category :
Languages : en
Pages : 356
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Author:
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Category : Environmental impact analysis
Languages : en
Pages : 484
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Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309464447
Category : Nature
Languages : en
Pages : 337
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Book Description
The 1980 eruption of Mount St. Helens in southwest Washington State radically changed the physical and socio-economic landscapes of the region. The eruption destroyed the summit of the volcano, sending large amounts of debris into the North Fork Toutle River, and blocking the sole means of drainage from Spirit Lake 4 miles north of Mount St. Helens. As a result of the blockage, rising lake levels could cause failure of the debris blockage, putting the downstream population of approximately 50,000 at risk of catastrophic flooding and mud flows. Further, continued transport of sediment to the river from volcanic debris deposits surrounding the mountain reduces the flood carrying capacity of downstream river channels and leaves the population vulnerable to chronic flooding. The legacy of the 1980 eruption and the prospect of future volcanic, seismic, and flood events mean that risk management in the Spirit Lake Toutle River system will be challenging for decades to come. This report offers a decision framework to support the long-term management of risks related to the Spirit Lake and Toutle River system in light of the different regional economic, cultural, and social priorities, and the respective roles of federal, tribal, state, and local authorities, as well as other entities and groups in the region. It also considers the history and adequacy of characterization, monitoring, and management associated with the Spirit Lake debris blockage and outflow tunnel, other efforts to control transport of water and sediment from the 1980 and later eruptions, and suggests additional information needed to support implementation of the recommended decision framework.
Author:
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Category : Disaster relief
Languages : en
Pages : 146
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Book Description
