Reports
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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Wyoming greater sage-grouse habitat prioritization: A collection of multi-scale seasonal models and geographic information systems land management tools Wyoming greater sage-grouse habitat prioritization: A collection of multi-scale seasonal models and geographic information systems land management tools
With rapidly changing landscape conditions within Wyoming and the potential effects of landscape changes on sage-grouse habitat, land managers and conservation planners, among others, need procedures to assess the location and juxtaposition of important habitats, land-cover, and land-use patterns to balance wildlife requirements with multiple human land uses. Biologists frequently...
Authors
Michael S. O’Donnell, Cameron L. Aldridge, Kevin E. Doherty, Bradley C. Fedy
Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2014 Yellowstone grizzly bear investigations — Annual report of the Interagency Grizzly Bear Study Team 2014
This Annual Report summarizes results of grizzly bear (Ursus arctos) monitoring and research conducted in the Greater Yellowstone Ecosystem (GYE) by the Interagency Grizzly Bear Study Team (IGBST) during 2014. The report also contains a summary of grizzly bear management actions to address conflict situations.
1964 Great Alaska Earthquake: a photographic tour of Anchorage, Alaska 1964 Great Alaska Earthquake: a photographic tour of Anchorage, Alaska
On March 27, 1964, at 5:36 p.m., a magnitude 9.2 earthquake, the largest recorded earthquake in U.S. history, struck southcentral Alaska (fig. 1). The Great Alaska Earthquake (also known as the Good Friday Earthquake) occurred at a pivotal time in the history of earth science, and helped lead to the acceptance of plate tectonic theory (Cox, 1973; Brocher and others, 2014). All large...
Authors
Evan E. Thoms, Peter J. Haeussler, Rebecca Anderson, Robert G. McGimsey
2009 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory 2009 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, volcanic unrest, and reports of unusual activity at or near eight separate volcanic centers in Alaska during 2009. The year was highlighted by the eruption of Redoubt Volcano, one of three active volcanoes on the western side of Cook Inlet and near south-central Alaska's population and commerce centers...
Authors
Robert G. McGimsey, Christina A. Neal, Olga A. Girina, Marina Chibisova, Alexander Rybin
2010 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory 2010 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, volcanic unrest or suspected unrest at 12 volcanic centers in Alaska during 2010. The most notable volcanic activity consisted of intermittent ash emissions from long-active Cleveland volcano in the Aleutian Islands. AVO staff also participated in hazard communication regarding eruptions or unrest at seven...
Authors
Christina A. Neal, Julie Herrick, O.A. Girina, Marina Chibisova, Alexander Rybin, Robert G. McGimsey, Jim Dixon
2010 weather and aeolian sand-transport data from the Colorado River corridor, Grand Canyon, Arizona 2010 weather and aeolian sand-transport data from the Colorado River corridor, Grand Canyon, Arizona
Measurements of weather parameters and aeolian sand transport were made in 2010 near selected archeological sites in the Colorado River corridor through Grand Canyon, Arizona. Data collected in 2010 indicate event- and seasonal-scale variations in rainfall, wind, temperature, humidity, and barometric pressure. Differences in weather patterns between 2009 and 2010 included a slightly...
Authors
Timothy P. Dealy, Amy E. East, Helen C. Fairley
2011 Summary: Coastal wetland restoration research 2011 Summary: Coastal wetland restoration research
The Great Lakes Restoration Initiative (GLRI) projects currently taking place in Great Lakes coastal wetlands provide a unique opportunity to study ecosystem response to management actions as practitioners strive to improve wetland function and increase ecosystem services. Through a partnership between the U.S. Geological Survey – Great Lakes Science Center (GLSC), U.S. Fish and Wildlife...
Authors
Kurt P. Kowalski, Michael J. Wiley, Douglas A. Wilcox, Martha L. Carlson Mazur, Alex Czayka, Andrea Dominguez, Susan Doty, Mike Eggleston, Sean Green, Amanda Sweetman
2011 volcanic activity in Alaska: summary of events and response of the Alaska Volcano Observatory 2011 volcanic activity in Alaska: summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, and volcanic unrest at or near three separate volcanic centers in Alaska during 2011. The year was highlighted by the unrest and eruption of Cleveland Volcano in the central Aleutian Islands. AVO annual summaries no longer report on activity at Russian volcanoes.
Authors
Robert G. McGimsey, J. Zebulon Maharrey, Christina A. Neal
2012 monitoring and tracking wet nitrogen deposition at Rocky Mountain National Park 2012 monitoring and tracking wet nitrogen deposition at Rocky Mountain National Park
No abstract available.
Authors
Kristi Morris, Alisa Mast, Gregory Wetherbee, Jill Baron, Curt Taipale, Tamara Blett, David Gay, Jared Heath
2012 National Park visitor spending effects: economic contributions to local communities, states, and the nation 2012 National Park visitor spending effects: economic contributions to local communities, states, and the nation
The National Park Service (NPS) manages the nation's most iconic destinations that attract millions of visitors from across the nation and around the world. Trip-related spending by NPS visitors generates and supports a considerable amount of economic activity within park gateway communities. This economic effects analysis measures how NPS visitor spending cycles through local economies
Authors
Catherine Cullinane Thomas, Christopher C. Huber, Lynne Koontz
2012 volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory 2012 volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, volcanic unrest, or suspected unrest at 11 volcanic centers in Alaska during 2012. Of the two verified eruptions, one (Cleveland) was clearly magmatic and the other (Kanaga) was most likely a single phreatic explosion. Two other volcanoes had notable seismic swarms that probably were caused by magmatic...
Authors
Julie A. Herrick, Christina A. Neal, Cheryl E. Cameron, James P. Dixon, Robert G. McGimsey
2013 National Park visitor spending effects: economic contributions to local communities, states, and the nation 2013 National Park visitor spending effects: economic contributions to local communities, states, and the nation
The National Park Service (NPS) manages the nation's most iconic destinations that attract millions of visitors form across the nation and around the world. Trip-related spending by NPS visitors generates and supports a considerable amount of economic activity within park gateway communities. This economic effects analysis measures how NPS visitor spending cycles through local economies
Authors
Catherine M. Cullinane Thomas, Christopher C. Huber, Lynne Koontz