Author: United States. Forest Service. Pacific Northwest RegionPublisher:
ISBN:
Category : Ecological assessment (Biology)
Languages : en
Pages :
Book Description
Upper Toutle River Watershed Analysis
Author: United States. Forest Service. Pacific Northwest RegionPublisher:
ISBN:
Category : Ecological assessment (Biology)
Languages : en
Pages :
Book Description
Upper Rogue River Watershed
Author: Rogue River National Forest (Agency : U.S.)Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages :
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.
Watershed Analysis Report for the Upper Main Eel River Watershed
Author: United States. Bureau of Land ManagementPublisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 184
Book Description
Upper Mad River Watershed Analysis
Author: Leslie WollfPublisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 149
Book Description
Mount St. Helens, Cowlitz and Toutle Rivers Sedimentation Study, 1980-82
Author: Publisher:
ISBN:
Category : Cowlitz River (Wash.)
Languages : en
Pages : 328
Book Description
Twisp River Watershed Analysis
Author: Arlo Vander WoudePublisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages :
Book Description
A 'Draft' document was published in September, 1994 for review by other public agency personnel, and various science-based reviews."--Abstract, inside cover.
North Fork of the Siuslaw River Watershed Analysis
Author: Siuslaw National Forest (Or.)Publisher:
ISBN:
Category : North Fork Siuslaw Watershed (Or.)
Languages : en
Pages :
Book Description
Middle Fork and South Fork of the Upper Rogue River Watershed Analysis
Author: Prospect Ranger District (Or.)Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages :
Book Description
Author: