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: 85087
Sensitivity of benthic biota and toxicity of cadmium, cobalt, copper, nickel, lead, and zinc mixtures in Washington, United States, and British Columbia, Canada Sensitivity of benthic biota and toxicity of cadmium, cobalt, copper, nickel, lead, and zinc mixtures in Washington, United States, and British Columbia, Canada
Relative sensitivities and responses of juvenile white sturgeon (Acipenser transmontanus), Hyalella azteca, two families of mayfly (Ephemerellidae, Heptageniidae), one family of caddisfly (Brachycentridae), and a natural community of benthic macroinvertebrates (BMI) to multiple metals are predicted using previously collected laboratory and field samples and a metal mixture model...
Authors
Laurie S. Balistrieri
Advanced Research Computing Advanced Research Computing
Advanced Research Computing provides access to high-performance computing (HPC) resources as well as training and consultation for effective use of these powerful systems. This product outlines current HPC machines, capabilities, classes, and enabled science.
Authors
Leah Colasuonno, Rebecca D. Uribe, Janice M. Gordon, Jeff T. Falgout
Water resources related to breccia pipe uranium mining in the Grand Canyon region Water resources related to breccia pipe uranium mining in the Grand Canyon region
Authors
Kimberly R. Beisner, Benjamin J. Siebers, Fred D. Tillman, Katherine Walton-Day
Assessment of undiscovered conventional oil and gas resources of the Zagros Fold Belt of Iran, Iraq, Syria, and Turkey, 2023 Assessment of undiscovered conventional oil and gas resources of the Zagros Fold Belt of Iran, Iraq, Syria, and Turkey, 2023
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional resources of 3.3 billion barrels of oil and 80.3 trillion cubic feet of gas in the Zagros Fold Belt of Iran, Iraq, Syria, and Turkey.
Authors
Christopher J. Schenk, Tracey J. Mercier, Phuong A. Le, Andrea D. Cicero, Ronald M. Drake, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller, Kira K. Timm
Direct effects of pesticides and other grassland management practices on the North American Monarch Butterfly (Danaus plexippus plexippus): A systematic review Direct effects of pesticides and other grassland management practices on the North American Monarch Butterfly (Danaus plexippus plexippus): A systematic review
This review synthesizes recent scientific literature on the effects of grassland management practices and pesticide applications on monarch butterflies (Danaus plexippus), focusing on studies published since the 2020 U.S. Fish and Wildlife Service Species Status Assessment (SSA). While the SSA highlighted habitat conservation efforts to enhance monarch populations, there has been limited...
Authors
Elyssa C. McCulloch, Alex Morphew, Elisabeth B. Webb
Developing research tools for demographic study of Rhynchophanes mccownii (thick-billed longspurs) Developing research tools for demographic study of Rhynchophanes mccownii (thick-billed longspurs)
Like numerous other North American grassland bird species, Rhynchophanes mccownii (thick-billed longspur) has experienced severe population declines in the last 50 years. Little is known about population-limiting factors, and knowledge gaps limit conservation efforts on the species; however, before research studies aimed at improving conservation and management actions can be developed...
Authors
Megan M. Ring, Rose J. Swift, Michael J. Anteau, Lawrence D. Igl, Mark E Seamans, Scott G. Somershoe, Jay Alan VonBank, John M. Yeiser, Garrett J. MacDonald
Workshop: Nature-based solutions to ecological and economic problems caused by extreme precipitation events in the Upper Mississippi River Basin Workshop: Nature-based solutions to ecological and economic problems caused by extreme precipitation events in the Upper Mississippi River Basin
Future climate conditions in the Upper Mississippi River Basin are projected to include many more extreme precipitation events. These intense periods of rain can lead to flooding of the Mississippi River itself, as well the small streams and rivers that feed it. This flooding presents a challenge for local communities, farmers, small businesses, river users, and the ecosystems and...
Authors
Ryan C. Burner, Kristen L. Bouska, John T. Delaney, Molly Van Appledorn, Brian Stenquist
Ungulate migrations of the Western United States, volume 5 Ungulate migrations of the Western United States, volume 5
Many ungulates migrate between distinct summer and winter ranges to take advantage of spatially and temporally variable food sources and avoid threats such as predators and deep snow. In 2018, the U.S. Department of the Interior established Secretarial Order 3362, which provided Federal support to expand existing research efforts to study ungulate populations and conserve their...
Authors
Matthew J. Kauffman, Blake Lowrey, Jennifer L. McKee, Travis Allen, Chloe J. Beaupre, Jeffrey L. Beck, Scott Bergen, Justin Binfet, Shelly Blair, James W. Cain, Peyton Carl, Todd Cornish, Michelle Cowardin, Rachel Curtis, Melia DeVivo, Jennifer Diamond, Katie M. Dugger, Orrin Duvuvuei, C.J. Ellingwood, Darby Finely, Jessica Fort, Eric Freeman, Ian Freeman, Jeff Gagnon, Emily R. Gelzer, Jacob Gray, Evan Greenspan, Curtis Hendricks, Valerie D. Hinojoza-Rood, Matthew Jeffress, Carolyn A. Kyle, Zack Lockyer, Cody McKee, Jerod A. Merkle, Jerrod Merrell, Matthew A. Mumma, Jake Powell, Craig Reddell, Adele K. Reinking, Robert Ritson, Sierra Robatcek, Benjamin S. Robb, Brianna M. Russo, Hall Sawyer, Cody Schroeder, Elissa Slezak, Scott Sprague, Erik Steiner, Alethea Steingisser, Tom Stephenson, Nicole Tatman, Kaitlyn L. Taylor, Don Whittaker, Travis Zaffarano
Hydrogeomorphic history, hydrodynamic conditions, and simulations of water levels and velocities from varying lake levels and streamflow for the Sheboygan Rivermouth and area of concern, Wisconsin Hydrogeomorphic history, hydrodynamic conditions, and simulations of water levels and velocities from varying lake levels and streamflow for the Sheboygan Rivermouth and area of concern, Wisconsin
In 2011–13, the U.S. Geological Survey (USGS) conducted a study of the hydrogeomorphic setting and hydrodynamic conditions of the lower Sheboygan River and island complex within the backwater zone of Lake Michigan. Analyses of historical aerial photographs from 1938–2010 indicated that the Wildwood Islands complex had experienced mainly erosion and what was mainly one island in 1938 had...
Authors
Faith A. Fitzpatrick, Stephen, M. Westenbroek, Paul C. Reneau, James D. Blount
Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2022 Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2022
The U.S. Army Corps of Engineers, Jacksonville District, deepened the St. Johns River channel in Jacksonville, Florida, to accommodate larger, fully loaded cargo vessels. The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, monitored stage, discharge, and (or) water temperature and salinity at 26 continuous data collection sites in the St. Johns River...
Authors
Jennifer N. Carson, Matthew T. Benacquisto
Uranium mining, the Grand Canyon region, and the science of an ecosystem Uranium mining, the Grand Canyon region, and the science of an ecosystem
Illustration of U.S. Geological Survey science at breccia pipe mines in the Grand Canyon region. The upper left portion shows a cross section of a breccia pipe and rock layers (far upper left) in a panoramic view of the Grand Canyon with upper right depicting rock pinnacles the Havasupai Tribe call Wi’i Gileeva. The right portion depicts a spring. The Colorado River bisects the...
Authors
Benjamin J. Siebers