Author: United States. Army. Corps of Engineers. Portland DistrictPublisher:
ISBN:
Category : Flood control
Languages : en
Pages : 346
Book Description
Mount St. Helens, Washington, Decision Document
Author: United States. Army. Corps of Engineers. Portland DistrictPublisher:
ISBN:
Category : Flood control
Languages : en
Pages : 346
Book Description
A Decision Framework for Managing the Spirit Lake and Toutle River System at Mount St. Helens
Author: National Academies of Sciences, Engineering, and MedicinePublisher: National Academies Press
ISBN: 0309464447
Category : Nature
Languages : en
Pages : 337
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.
Mount St. Helens, Washington, Feasibility Report & Environmental Impact Statement
Author: Publisher:
ISBN:
Category : Environmental impact statements
Languages : en
Pages : 482
Book Description
GAO Documents
Author: United States. General Accounting OfficePublisher:
ISBN:
Category :
Languages : en
Pages : 1010
Book Description
Catalog of reports, decisions and opinions, testimonies and speeches.
Water-resources Investigations Report
Author: Mount St.Helens Feasibility Report, Toutle, Cowlitz, Columbia Rivers
Author: Mt. Saint Helens Recovery Operation (WA,OR)
Author: Annual Report FY ... of the Secretary of the Army on Civil Works Activities
Author: United States. Army. Corps of EngineersPublisher:
ISBN:
Category : Civil engineering
Languages : en
Pages : 1660
Book Description
Development and Routing of Mudflow Resulting from Hypothetical Failure of Spirit Lake Debris Dam, Washington
Author: David L. KreschPublisher:
ISBN:
Category : Debris avalanches
Languages : en
Pages : 40
Book Description
Journal of the House of Representatives of the United States
Author: United States. Congress. HousePublisher:
ISBN:
Category : Legislation
Languages : en
Pages : 1764
Book Description
Some vols. include supplemental journals of "such proceedings of the sessions, as, during the time they were depending, were ordered to be kept secret, and respecting which the injunction of secrecy was afterwards taken off by the order of the House."