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.
Filter Total Items: 84733
Assessment of continuous oil and gas resources in the Upper Cretaceous Niobrara Formation in the Southwestern Wyoming Province, Wyoming and Colorado, 2024 Assessment of continuous oil and gas resources in the Upper Cretaceous Niobrara Formation in the Southwestern Wyoming Province, Wyoming and Colorado, 2024
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean continuous resources of 703 million barrels of oil and 5.8 trillion cubic feet of gas in the Niobrara Formation in the Southwestern Wyoming Province, Wyoming and Colorado.
Authors
Kira K. Timm, Christopher J. Schenk, Jane S. Hearon, Thomas M. Finn, Sarah E. Gelman, Cheryl A. Woodall, Tracey J. Mercier, Andrea D. Cicero, Ronald M. Drake, Geoffrey S. Ellis, Michael H. Gardner, Benjamin G. Johnson, Jenny H. Lagesse, Phuong A. Le, Heidi M. Leathers-Miller, Scott S. Young
Engineering and risk research—A strategic vision for extending USGS earthquake science to risk assessment and mitigation Engineering and risk research—A strategic vision for extending USGS earthquake science to risk assessment and mitigation
As a part of the U.S. Geological Survey (USGS) Natural Hazards Mission Area, the Engineering and Risk Project (ERP) of the Geologic Hazards Science Center conducts civil engineering research to extend natural hazards science to risk assessments. The ERP includes predominantly, but not exclusively, staff funded by the USGS Earthquake Hazards Program. A major focus of the ERP is to deliver
Authors
Kishor S. Jaiswal, Sanaz Rezaeian, Nico Luco, N. Simon Kwong, Andrew James Makdisi, H. Benjamin Mason, Robert E. Chase, Zachary Alan Kortum
Distribution, abundance, and breeding activities of the Southwestern Willow Flycatcher at Marine Corps Base Camp Pendleton, California—2024 annual report Distribution, abundance, and breeding activities of the Southwestern Willow Flycatcher at Marine Corps Base Camp Pendleton, California—2024 annual report
Executive Summary The purpose of this report is to provide the Marine Corps with an annual summary of the distribution, abundance, and breeding activity of the endangered Southwestern Willow Flycatcher (Empidonax traillii extimus; flycatcher) at Marine Corps Base Camp Pendleton (MCBCP or “Base”). Surveys for the flycatcher were conducted on Base between May 8 and July 24, 2024. All of...
Authors
Scarlett L. Howell, Barbara E. Kus
Status and trends of forest bird populations at Hakalau Forest National Wildlife Refuge, 1987–2024 Status and trends of forest bird populations at Hakalau Forest National Wildlife Refuge, 1987–2024
Since 1985, the Hakalau Forest Unit of the Big Island National Wildlife Refuge Complex (hereafter, Hakalau) has protected the largest endemic forest bird diversity in the State of Hawaii. This includes three endangered and one threatened species and their habitats. Hakalau’s vast area (155 km2), mostly high elevation (>1500 m) montane forest, provides refuge from avian malaria...
Authors
Noah Hunt, Steve Kendall, Trevor Bak, Richard J. Camp
Preliminary field report of landslide hazards following Hurricane Helene Preliminary field report of landslide hazards following Hurricane Helene
Executive Summary This report reflects our knowledge regarding the widespread landslide activity associated with Hurricane Helene observed during the U.S. Geological Survey’s (USGS) mission assignment to North Carolina in October 2024. The material in this report was originally prepared for the Federal Emergency Management Agency under mission assignment DR-4827-NC. The data and...
Authors
Kate E. Allstadt, Sara K. McBride, Jonathan W. Godt, Stephen L. Slaughter, Kelli Wadsworth Baxstrom, Steven Sobieszczyk, Anna Stull
Wake Atoll: Evaluation of plant biosecurity Wake Atoll: Evaluation of plant biosecurity
Introduced organisms can cause substantial effects across most landscapes. Island ecosystems, especially tropical islands, are at elevated risk from introduced organisms. The risks are even higher for tropical islands with moderate or high levels of transit, yet this can be minimized by application of appropriate biosecurity requirements. In this study, we examined the potential for non...
Authors
Corie Yanger, James D. Jacobi, Stephanie G. Yelenik, Stacie A. Hathaway