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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North American Waterfowl Management Plan survey regional profile—Southeast region North American Waterfowl Management Plan survey regional profile—Southeast region
Executive Summary Gaining a better understanding of the human dimensions of waterfowl management to inform the North American Waterfowl Management Plan is a valuable but challenging goal for the future success of waterfowl management. Increasing engagement with key stakeholder groups will lead to more support and effective waterfowl management. Social systems are complex because...
Authors
Nicholas W. Cole, David C. Fulton
Bedrock fracture characterization of the New Hampshire State Route 111 bypass, Windham, New Hampshire Bedrock fracture characterization of the New Hampshire State Route 111 bypass, Windham, New Hampshire
Bedrock roadcuts developed with blasting along the New Hampshire State Route 111 bypass in Windham expose the metasedimentary Silurian Berwick Formation and intrusions of multiple phases of foliated to nonfoliated granite to granitic pegmatite of the Devonian New Hampshire Plutonic Suite. Fracture characterization at two roadway rock cuts (roadcuts) included measurement of fractures over...
Authors
Gregory J. Walsh, Nicholas Edwin Powell
Watershed hydrology assessment for the Nueces River basin--Appendix A, statistical hydrology. Watershed hydrology assessment for the Nueces River basin--Appendix A, statistical hydrology.
No abstract available.
Authors
David Wallace, Kara M. Watson
Mount Spurr Volcano Mount Spurr Volcano
No abstract available.
Authors
Kristi L. Wallace, Christopher F. Waythomas, Michelle L. Coombs, A.M. Nastan
Fisheries research and monitoring activities of the Lake Erie Biological Station, 2024 Fisheries research and monitoring activities of the Lake Erie Biological Station, 2024
A comprehensive understanding of fish populations and their interactions is the cornerstone of modern fishery management and the basis for Lake Erie’s Fish Community Objectives (FCOs) developed in 2020 (Francis et al. 2020). The 2024 U.S. Geological Survey (USGS) Lake Erie Biological Station Annual Report is responsive to these FCOs and the USGS obligations via a Memorandum of...
Authors
Mark Richard Dufour, Francesco Guzzo, Corbin David Hilling, Kevin R. Keretz, Richard Kraus, Richard Cole Oldham, James Roberts, Joseph Schmitt
Methodology Methodology
Following the approach developed by Gregory and van Strien (2010), State of the Birds reports focus on composite summaries of population change for collections of species that share common primary habitat or taxonomic affinity. In this report, we provide composite indexes for habitat-obligate species as defined in earlier reports (Grassland, Aridland, Eastern Forest and Western Forest)...
Authors
A. Rodewald, Mike Brasher, John Alexander, Elisabeth M. Ammon, Tracy E. Borneman, Dustin Brewer, Stephen Brown, Jennie N. Duberstein, Beth Flint, Adam Hannuksela, Kathleen Holland, J. A. Hostetler, Edwin Juarez, Robin Kaler, Chris Latimer, Elva Manquera, Kate Martin, Chris McCreedy, Nicole Michel, Corina Newsome, Andrew Olsen, Marc Romano, Kenneth V. Rosenberg, B. Ryder, Rebekah J. Rylander, John R. Sauer, Adam Smith, Dena Spatz, Caleb Spiegel, Tice Supplee, Roberta Swift, Eric VanderWerf, Josh Vest, Olivia Wang
ECCOE Landsat quarterly calibration and validation report—Quarter 3, 2024 ECCOE Landsat quarterly calibration and validation report—Quarter 3, 2024
Executive Summary The U.S. Geological Survey Earth Resources Observation and Science Calibration and Validation (Cal/Val) Center of Excellence (ECCOE) focuses on improving the accuracy, precision, calibration, and product quality of remote-sensing data, leveraging years of multiscale optical system geometric and radiometric calibration and characterization experience. The ECCOE Landsat...
Authors
Md Obaidul Haque, Nahid Hasan, Ashish Shrestha, Rajagopalan Rengarajan, Mark Lubke, Jerad L. Shaw, Kathryn Ruslander, Esad Micijevic, Michael J. Choate, Cody Anderson, Jeff Clauson, Kurt Thome, Ed Kaita, Raviv Levy, Jeff Miller, Leibo Ding
Phase 1 technical implementation plan for the expansion of the ShakeAlert earthquake early warning system to Alaska Phase 1 technical implementation plan for the expansion of the ShakeAlert earthquake early warning system to Alaska
Executive Summary The conference report accompanying the fiscal year (FY) 2022 Consolidated Appropriations Act (Public Law 117–103) for the U.S. Department of the Interior and related agencies directed the U.S. Geological Survey (USGS) to “work with the State of Alaska to develop an implementation plan to be completed within two years in order to put ShakeAlert/Earthquake Early Warning...
Authors
Cecily J. Wolfe, Natalia A. Ruppert, Douglas D. Given, Michael E. West, Valerie Thomas, Jessica R. Murray, Ronni Grapenthin
Grfin Tools—User guide and methods for modeling landslide runout and debris-flow growth and inundation Grfin Tools—User guide and methods for modeling landslide runout and debris-flow growth and inundation
The software package, Grfin Tools, can estimate potential runout from landslides or inundation from geophysical mass flows such as debris flows, lahars from volcanoes, and rock avalanches within a digital elevation model (DEM). Grfin is an acronym of growth + flow + inundation. The tools within this package apply simple, well-tested, empirical models of runout that are computationally...
Authors
Mark E. Reid, Dianne L. Brien, Collin Cronkite-Ratcliff, Jonathan P. Perkins
Assessment of undiscovered conventional oil and gas resources of the Greater Caspian area, 2022 Assessment of undiscovered conventional oil and gas resources of the Greater Caspian area, 2022
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 34.3 billion barrels of oil and 320 trillion cubic feet of gas in the Greater Caspian area.
Authors
Christopher J. Schenk, Tracey J. Mercier, Phuong A. Le, Andrea D. Cicero, Ronald M. Drake, Thomas M. Finn, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller, Kira K. Timm
Water-budget analysis of the Medina and Diversion Lake system, with estimated recharge to the Edwards aquifer and the upper zone of the Trinity aquifer, Bandera, Bexar, and Medina Counties, Texas, 1955–2022 Water-budget analysis of the Medina and Diversion Lake system, with estimated recharge to the Edwards aquifer and the upper zone of the Trinity aquifer, Bandera, Bexar, and Medina Counties, Texas, 1955–2022
The U.S. Geological Survey—in cooperation with the San Antonio Water System and the Edwards Aquifer Authority—used data collected during four different periods (March 1955–August 1964, October 1995–September 1996, March 2001–June 2002, and March 2017–October 2022) as part of a new study to refine previously derived relations between the altitude of the water surface of Medina Lake and...
Authors
Richard N. Slattery, Namjeong Choi, Allan K. Clark