Water Quality of Streams Draining Abandoned and Reclaimed Mined Lands in the Kantishna Hills Area, Denali National Park and Preserve, Alaska, 2008-11

Water Quality of Streams Draining Abandoned and Reclaimed Mined Lands in the Kantishna Hills Area, Denali National Park and Preserve, Alaska, 2008-11 PDF Author: Timothy Brabets
Publisher: Createspace Independent Publishing Platform
ISBN: 9781500551162
Category : Technology & Engineering
Languages : en
Pages : 0

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Book Description
The Kantishna Hills are an area of low elevation mountains in the northwest part of Denali National Park and Preserve, Alaska. Streams draining the Kantishna Hills are clearwater streams that support several species of fish and are derived from rain, snowmelt, and subsurface aquifers. However, the water quality of many of these streams has been degraded by mining. Past mining practices generated acid mine drainage and excessive sediment loads that affected water quality and aquatic habitat. Because recovery through natural processes is limited owing to a short growing season, several reclamation projects have been implemented on several streams in the Kantishna Hills region. To assess the current water quality of streams in the Kantishna Hills area and to determine if reclamation efforts have improved water quality, a cooperative study between the U.S. Geological Survey and the National Park Service was undertaken during 2008-11.

Water Quality of Streams Draining Abandoned and Reclaimed Mined Lands in the Kantishna Hills Area, Denali National Park and Preserve, Alaska, 2008-11

Water Quality of Streams Draining Abandoned and Reclaimed Mined Lands in the Kantishna Hills Area, Denali National Park and Preserve, Alaska, 2008-11 PDF Author: Timothy Brabets
Publisher: Createspace Independent Publishing Platform
ISBN: 9781500551162
Category : Technology & Engineering
Languages : en
Pages : 0

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Book Description
The Kantishna Hills are an area of low elevation mountains in the northwest part of Denali National Park and Preserve, Alaska. Streams draining the Kantishna Hills are clearwater streams that support several species of fish and are derived from rain, snowmelt, and subsurface aquifers. However, the water quality of many of these streams has been degraded by mining. Past mining practices generated acid mine drainage and excessive sediment loads that affected water quality and aquatic habitat. Because recovery through natural processes is limited owing to a short growing season, several reclamation projects have been implemented on several streams in the Kantishna Hills region. To assess the current water quality of streams in the Kantishna Hills area and to determine if reclamation efforts have improved water quality, a cooperative study between the U.S. Geological Survey and the National Park Service was undertaken during 2008-11.

Seismicity of the United States, 1568-1989 (revised)

Seismicity of the United States, 1568-1989 (revised) PDF Author: Carl W Stover
Publisher:
ISBN:
Category : Earthquakes
Languages : en
Pages : 528

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Book Description


Critical Mineral Resources of the United States

Critical Mineral Resources of the United States PDF Author: K. J. Schulz
Publisher: Geological Survey
ISBN: 9781411339910
Category : Business & Economics
Languages : en
Pages : 868

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Book Description
As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.

Bald Eagles in Alaska

Bald Eagles in Alaska PDF Author: Philip F. Schempf
Publisher:
ISBN: 9780888396952
Category : Science
Languages : en
Pages : 0

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Book Description
An expansive collection of papers and articles from internationally recognized bald eagle experts. Presented is a complete portrait of the status and ecology of the bald eagle in Alaska.A collection of papers and articles from international bald eagle experts, which present a complete portrait of the status and ecology of the bald eagle in Alaska. Myriad topics include culture, biology, population history and status, conservation and management, the Alaskan habitat from the northern rainforest to the Aleutian Islands, attitudes from diverse groups from the Tlingit to bounty hunters, along with sound scientific data.

A Guide to the Congestion Mitigation and Air Quality Improvement Program

A Guide to the Congestion Mitigation and Air Quality Improvement Program PDF Author: United States. Federal Highway Administration
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 48

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Book Description
The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) established the Congestion Mitigation and Air Quality Improvement (CMAQ) Program. The CMAQ Program emphasizes the importance of the link between transportation and air quality, by providing 6 billion dollars between 1992-1997 for transportation projects and programs to improve air quality. Consequently, many areas will be able to implement transportation control measures (TCMs), in compliance with the mandates of the Clean Air Act Amendments of 1990 (CAAA).

The Book of the National Parks

The Book of the National Parks PDF Author: Robert Sterling Yard
Publisher:
ISBN:
Category : National parks and reserves
Languages : en
Pages : 522

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Denali National Park and Preserve, Alaska

Denali National Park and Preserve, Alaska PDF Author: United States. National Park Service
Publisher:
ISBN:
Category : Denali National Park and Preserve (Alaska)
Languages : en
Pages : 66

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Book Description


The Wolves of Isle Royale

The Wolves of Isle Royale PDF Author: Rolf Olin Peterson
Publisher: University of Michigan Press
ISBN: 9780472032617
Category : Nature
Languages : en
Pages : 198

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Book Description
A new edition of a classic: the compelling firsthand account of an ancient predator-prey relationship---the Isle Royale wolf and moose dynamic

Code of Federal Regulations

Code of Federal Regulations PDF Author:
Publisher:
ISBN:
Category : Code of federal regulations
Languages : en
Pages : 136

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Book Description


Hydrocarbons from Coal

Hydrocarbons from Coal PDF Author: B. E. Law
Publisher: Amer Assn of Petroleum Geologists
ISBN: 9780891810469
Category : Coal
Languages : en
Pages : 400

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Book Description