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Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 82,000 reports authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Vulnerabilities to climate change of Massachusetts animal species of greatest conservation need Vulnerabilities to climate change of Massachusetts animal species of greatest conservation need
Over the last decade, the Commonwealth of Massachusetts has addressed the potential and actual impacts of climate change on state flora and fauna. The state’s involvement began in 2007 when, led by the Division of Fisheries and Wildlife (DFW) and assisted by Manomet Center for Con-servation Research, it carried out one of the first habitat vulnerability assessments in North America...
Authors
Hector Galbraith, Toni L. Morelli
Winter 2016, Part B—Coastal oblique aerial photographs collected from Assateague Island, Virginia, to Montauk Point, New York, March 8–9, 2016 Winter 2016, Part B—Coastal oblique aerial photographs collected from Assateague Island, Virginia, to Montauk Point, New York, March 8–9, 2016
The U.S. Geological Survey (USGS), as part of the National Assessment of Coastal Change Hazards project, conducts baseline and storm-response photography missions to document and understand the changes in the vulnerability of the Nation's coasts to extreme storms. On March 8–9, 2016, the USGS conducted an oblique aerial photographic survey from Assateague Island, Virginia, to Montauk...
Authors
Karen L. M. Morgan
Winter 2016, Part A—Coastal oblique aerial photographs collected from the South Carolina/North Carolina border to Assateague Island, Virginia, February 18–19, 2016 Winter 2016, Part A—Coastal oblique aerial photographs collected from the South Carolina/North Carolina border to Assateague Island, Virginia, February 18–19, 2016
The U.S. Geological Survey (USGS), as part of the National Assessment of Coastal Change Hazards project, conducts baseline and storm-response photography missions to document and understand the changes in the vulnerability of the Nation's coasts to extreme storms. On February 18–19, 2016, the USGS conducted an oblique aerial photographic survey from the South Carolina/North Carolina...
Authors
Karen L. M. Morgan
Five-year external reviews of the eight department of interior climate science centers Five-year external reviews of the eight department of interior climate science centers
No abstract available.
Authors
Jill B. Rolland, P. B. Duffy, Clifford Duke, David Helweg, Stephen L. Katz, Olivia E. LeDee, Steven Quiring
Contaminants of emerging concern in the Great Lakes Basin: A report on sediment, water, and fish tissue chemistry collected in 2010-2012 Contaminants of emerging concern in the Great Lakes Basin: A report on sediment, water, and fish tissue chemistry collected in 2010-2012
Despite being detected at low levels in surface waters and sediments across the United States, contaminants of emerging concern (CECs) in the Great Lakes Basin are not well characterized in terms of spatial and temporal occurrence. Additionally, although the detrimental effects of exposure to CECs on fish and wildlife have been documented for many CECs in laboratory studies, we do not...
Authors
Steven J. Choy, Mandy L. Annis, JoAnn Banda, Sarah R. Bowman, Mark E. Brigham, Sarah M. Elliott, Daniel J. Gefell, Mark Jankowski, Zachary G. Jorgenson, Kathy Lee, Jeremy N. Moore, William A. Tucker
Trends in the quality of water in New Jersey streams, water years 1971–2011 Trends in the quality of water in New Jersey streams, water years 1971–2011
In a study conducted by the U.S. Geological Survey in cooperation with the New Jersey Department of Environmental Protection and the Delaware River Basin Commission, trend tests were conducted on selected water-quality characteristics measured at stations on streams in New Jersey during selected periods over water years 1971‒2011. Tests were conducted on 3 nutrients (total nitrogen...
Authors
R. Edward Hickman, Robert M. Hirsch
Water-quality sampling plan for evaluating the distribution of bigheaded carps in the Illinois Waterway Water-quality sampling plan for evaluating the distribution of bigheaded carps in the Illinois Waterway
The two nonnative invasive bigheaded carp species (bighead carp Hypophthalmichthys nobilis and silver carp H. molitrix) that were accidentally released in the 1970s have spread widely into the rivers and waterways of the Mississippi River Basin. First detected in the lower reaches of the Illinois Waterway (IWW, the combined Illinois River-Des Plaines River-Chicago Area Waterway System)...
Authors
James J. Duncker, Paul J. Terrio
Water resources of Iberia Parish, Louisiana Water resources of Iberia Parish, Louisiana
Introduction Information concerning the availability, use, and quality of water in Iberia Parish, Louisiana, is critical for proper water-resource management. This fact sheet summarizes the availability, past and current use, use trends, and water quality from groundwater and surface-water sources in the parish for water managers, parish residents, and others to assist in stewardship of...
Authors
Vincent E. White, Lawrence B. Prakken
Water resources of Concordia Parish, Louisiana Water resources of Concordia Parish, Louisiana
Introduction Information concerning the availability, use, and quality of water in Concordia Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the availability, past and current use, use trends...
Authors
Vincent E. White
Water resources of Catahoula Parish, Louisiana Water resources of Catahoula Parish, Louisiana
Introduction Information concerning the availability, use, and quality of water in Catahoula Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. Information on the availability, past and current use, use trends...
Authors
Vincent E. White
Assessment of coalbed gas resources of the Kalahari Basin Province of Botswana, Zimbabwe, and Zambia, Africa, 2016 Assessment of coalbed gas resources of the Kalahari Basin Province of Botswana, Zimbabwe, and Zambia, Africa, 2016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 4.5 trillion cubic feet of coalbed gas in the Kalahari Basin Province of Botswana, Zambia, and Zimbabwe, Africa.
Authors
Michael E. Brownfield, Christopher J. Schenk, Timothy R. Klett, Marilyn E. Tennyson, Tracey J. Mercier, Stephanie B. Gaswirth, Kristen R. Marra, Sarah J. Hawkins, Thomas M. Finn, Phuong A. Le, Heidi M. Leathers-Miller
Eruptive history, geochronology, and post-eruption structural evolution of the late Eocene Hall Creek Caldera, Toiyabe Range, Nevada Eruptive history, geochronology, and post-eruption structural evolution of the late Eocene Hall Creek Caldera, Toiyabe Range, Nevada
The magmatic, tectonic, and topographic evolution of what is now the northern Great Basin remains controversial, notably the temporal and spatial relation between magmatism and extensional faulting. This controversy is exemplified in the northern Toiyabe Range of central Nevada, where previous geologic mapping suggested the presence of a caldera that sourced the late Eocene (34.0 mega...
Authors
Joseph P. Colgan, Christopher D. Henry