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
Nearshore ecosystems in the Gulf of Alaska Nearshore ecosystems in the Gulf of Alaska
Nearshore ecosystem monitoring in western Prince William Sound, Kenai Fjords National Park, Kachemak Bay, and Katmai National Park and Preserve has been conducted as a single Nearshore Component of the Gulf Watch Alaska program over the past five years (2017-2021). This program builds on the previous five years and continues, in many cases, decades of preceding research and monitoring...
Authors
Heather A. Coletti, Daniel Esler, Brenda Ballachey, Jim Bodkin, George G. Esslinger, Kimberly A. Kloecker, Daniel Monson, Brian H. Robinson, Sarah Beth Traiger, Katrin Iken, Brenda Konar, Tom Dean, Mandy Lindeberg, Ben Weitzman
Least Bell's Vireos and Southwestern Willow Flycatchers at the San Luis Rey Flood Risk Management Project Area in San Diego County, California—Breeding activities and habitat use—2022 annual report Least Bell's Vireos and Southwestern Willow Flycatchers at the San Luis Rey Flood Risk Management Project Area in San Diego County, California—Breeding activities and habitat use—2022 annual report
Authors
Alexandra Houston, Lisa D. Allen, Shannon M. Mendia, Barbara E. Kus
U.S. Geological Survey Rocky Mountain Region 2022 science exchange, showcasing interdisciplinary and state-of-the-art USGS science U.S. Geological Survey Rocky Mountain Region 2022 science exchange, showcasing interdisciplinary and state-of-the-art USGS science
Authors
Dana E. Peterson, Katherine L. French, Jeannette H. Oden, Patrick J. Anderson, Timothy N. Titus, Katharine G. Dahm, Jessica M. Driscoll, William J. Andrews
By
Ecosystems Mission Area, Natural Hazards Mission Area, Water Resources Mission Area, Energy Resources Program, Mineral Resources Program, Astrogeology Science Center, Central Energy Resources Science Center, Colorado Water Science Center, Fort Collins Science Center, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center, Colorado River Basin: Actionable and Strategic Integrated Science and Technology
Integrated rangeland fire management strategy actionable science plan completion assessment— Climate and weather topic, 2015–20 Integrated rangeland fire management strategy actionable science plan completion assessment— Climate and weather topic, 2015–20
Loss and degradation of sagebrush (Artemisia spp.) rangelands due to an accelerated invasive annual grass-wildfire cycle and other stressors are significant management, conservation, and economic issues in the western U.S. These sagebrush rangelands comprise a unique biome spanning 11 states, support over 350 wildlife species, and provide important ecosystem services that include...
Authors
Christopher R. Anthony, Matthew J Holloran, Mark A. Ricca, Steven E. Hanser, Sue L. Phillips, Paul F. Steblein, Lief A. Wiechman
Application of surrogate technology to predict real-time metallic-contaminant concentrations and loads in the Clark Fork near Grant-Kohrs Ranch National Historic Site, Montana, water years 2019–20 Application of surrogate technology to predict real-time metallic-contaminant concentrations and loads in the Clark Fork near Grant-Kohrs Ranch National Historic Site, Montana, water years 2019–20
Grant-Kohrs Ranch National Historic Site (GRKO) in southwestern Montana commemorates the frontier cattle era and its formative role in shaping the culture and history of the Western United States. The ranch was designated a national historic landmark in 1960 and a unit of the National Park Service (NPS) by Congress in 1972. The GRKO is unique because of its proximity to large-scale...
Authors
Christopher A. Ellison, Steven K. Sando, Tom E. Cleasby
U.S. Geological Survey Colorado Water Science Center postcard U.S. Geological Survey Colorado Water Science Center postcard
The U.S. Geological Survey Colorado Water Science Center provides timely, high-quality science information on Colorado’s water resources to help planners, managers, and others to make the decisions necessary for the use of these limited and shared resources throughout the State.
Authors
Jeannette H. Oden
Ecological effects of pinyon-juniper removal in the Western United States—A synthesis of scientific research, January 2014–March 2021 Ecological effects of pinyon-juniper removal in the Western United States—A synthesis of scientific research, January 2014–March 2021
Authors
Douglas J. Shinneman, Susan K. McIlroy, Sharon A Poessel, Rosemary L. Downing, Tracey N. Johnson, Aaron C. Young, Todd E. Katzner
Simulation of future streamflow and irrigation demand based on climate and urban growth projections in the Cape Fear and Pee Dee River Basins, North Carolina and South Carolina, 2055–65 Simulation of future streamflow and irrigation demand based on climate and urban growth projections in the Cape Fear and Pee Dee River Basins, North Carolina and South Carolina, 2055–65
Water resources in the coastal region of North Carolina and South Carolina (Coastal Carolinas) are currently under stress from competing ecological and societal needs. Projected changes in climate and population are expected to place even more stress on water resources in the region. The Coastal Carolinas Focus Area Study was initiated by the U.S. Geological Survey Water Availability and...
Authors
Laura N. Gurley, Ana Maria Garcia, Cassandra A. Pfeifle, Georgina M. Sanchez
Age-0 sablefish size and growth indices from seabird diets at Middleton Island, Gulf of Alaska Age-0 sablefish size and growth indices from seabird diets at Middleton Island, Gulf of Alaska
Sablefish (Anoplopoma fimbria) is a commercially valuable groundfish species in Alaska, with the population assessed annually by the National Oceanic and Atmospheric Administration Alaska Fisheries Science Center. Sablefish recruit into the commercially fished population at 2 years old and are poorly sampled by most surveys before that age. However, information on the abundance...
Authors
Mayumi L. Arimitsu, Scott A. Hatch
Pollinator conservation and climate science at the U.S. Geological Survey Pollinator conservation and climate science at the U.S. Geological Survey
Authors
Elise R. Irwin, Jonathan R. Mawdsley
A century of hydrologic data collection prepares western Long Island for current and future water-resources challenges A century of hydrologic data collection prepares western Long Island for current and future water-resources challenges
Freshwater is a vital natural resource. New York is a water-rich State; however, even here, the economical use of water resources is needed to ensure there is enough water of adequate quality for human and ecological needs—now and into the future. Nowhere in New York is this more evident than on Long Island where public-water supply is obtained from the sole-source aquifers directly...
Authors
Robert F. Breault, John P. Masterson, Ronald Busciolano, Irene Fisher