Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 490
Book Description
Mount St.Helens Feasibility Report, Toutle, Cowlitz, Columbia Rivers
Author: Mount St. Helens, Washington, Feasibility Report & Environmental Impact Statement
Author: 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
Author: Connie MansonPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 420
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
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
Channel Improvements, Columbia and Lower Willamette River Federal Navigation Channel, (OR,WA)
Author: Flood Hydrology
Author: V.P. SinghPublisher: Springer Science & Business Media
ISBN: 9400939574
Category : Science
Languages : en
Pages : 424
Book Description
Floods constitute a persistent and serious problem throughout the United States and many other parts of the world. They are responsible for losses amounting to billions of dollars and scores of deaths annually. Virtually all parts of the nation--coastal, moun tainous and rural--are affected by them. Two aspects of the problem of flooding that have long been topics of scientific inquiry are flood frequency and risk analyses. Many new, even improved, tech niques have recently been developed for performing these analyses. Nevertheless, actual experience points out that the frequency of say a 100-year flood, in lieu of being encountered on the average once in one hundred years, may be as little as once in 25 years. It is therefore appropriate to pause and ask where we are, where we are going and where we ought to be going with regard to the technology of flood frequency and risk analyses. One way to address these ques tions is to provide a forum where people from all quarters of the world can assemble, discuss and share their experience and expertise pertaining to flood frequency and risk analyses. This is what con stituted the motivation for organizing the International Symposium on Flood Frequency and Risk Analyses held May 14-17, 1986, at Louisiana State University, Baton Rouge, Louisiana.
The Ninth Annual USCOLD Lecture Series
Author: Energy and Water Development Appropriations for 1986
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water DevelopmentPublisher:
ISBN:
Category : Energy development
Languages : en
Pages : 1250
Book Description