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
Cooperative Fish and Wildlife Research Units Program—2023 Year-in-Review Cooperative Fish and Wildlife Research Units Program—2023 Year-in-Review
Introduction Established in 1935, the U.S. Geological Survey (USGS) Cooperative Fish and Wildlife Research Units Program is a unique cooperative partnership among State fish and wildlife agencies, host universities, the Wildlife Management Institute, USGS, and the U.S. Fish and Wildlife Service. Designed to meet the scientific needs of natural resource management agencies and to produce...
Authors
Elise R. Irwin, Caroline E. Murphy, Dawn E. Childs, Donald E. Dennerline, Jonathan R. Mawdsley
Using high-resolution geospatial imagery and data to document the evolution of the Wilderness Breach that was created by Hurricane Sandy in 2012 at Fire Island National Seashore, New York Using high-resolution geospatial imagery and data to document the evolution of the Wilderness Breach that was created by Hurricane Sandy in 2012 at Fire Island National Seashore, New York
The U.S. Geological Survey’s National Civil Applications Center obtained remote sensing data and imagery collected from 1939 through 2023 to monitor changes at Fire Island National Seashore, New York. On October 29, 2012, an inlet was created during Hurricane Sandy on Fire Island that remained open for 10 years. This inlet, named the “Wilderness Breach,” formed at the same location where...
Authors
Gary B. Fisher
Effects of nonmotorized recreation on ungulates in the western United States—A science synthesis to inform National Environmental Policy Act analyses Effects of nonmotorized recreation on ungulates in the western United States—A science synthesis to inform National Environmental Policy Act analyses
The U.S. Geological Survey is working with Federal land management agencies to develop a series of science syntheses to support National Environmental Policy Act (NEPA) analyses. This report synthesizes science information about the potential effects of nonmotorized recreation on ungulates in the western United States. We conducted a structured literature search to find published science...
Authors
Samuel E. Jordan, Taylor R. Ganz, Tait K. Rutherford, Matthew J. Blocker, Christopher T. Domschke, Frederick L. Klasner, Elroy H. Masters, Tye A. Morgan, Daryl R. Ratajczak, Elisabeth C. Teige, Sarah K. Carter
Quality assessment of past spawning mark estimations from a long-term survey in the Connecticut River watershed Quality assessment of past spawning mark estimations from a long-term survey in the Connecticut River watershed
The calcified structures of fishes provide insight into their periodic growth rates and can be combined with other biological variables to identify metrics such as size or age at maturity and mortality rates. Collecting this information on growth and life history can help evaluate the success of conservation efforts and inform future management decisions for a species in need. However...
Authors
Jacqueline B. Stephens, Adrian Jordaan, David Perkins, Kenneth Sprankle, Allison H. Roy
Enhanced geothermal systems electric-resource assessment for the Great Basin, southwestern United States Enhanced geothermal systems electric-resource assessment for the Great Basin, southwestern United States
The U.S. Geological Survey recently (2025) completed a provisional assessment of the geothermal-electric resources associated with high-temperature, low-permeability rock formations of the Great Basin, Southwestern United States. If sufficient technological advances to commercialize enhanced geothermal systems occur, then a current best provisional estimate for electric-power generation...
Authors
Erick R. Burns, Colin F. Williams, Jacob DeAngelo
Assessment of conventional and continuous oil and gas resources in the Mowry Composite Total Petroleum System in the Southwestern Wyoming Province, Wyoming, Colorado, and Utah, 2024 Assessment of conventional and continuous oil and gas resources in the Mowry Composite Total Petroleum System in the Southwestern Wyoming Province, Wyoming, Colorado, and Utah, 2024
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean conventional and continuous resources of 473 million barrels of oil and 27 trillion cubic feet of gas in the Mowry Composite Total Petroleum System in the Southwestern Wyoming Province, Wyoming, Colorado, and Utah.
Authors
Jane S. Hearon, Christopher J. Schenk, Sarah E. Gelman, Benjamin G. Johnson, Jenny H. Lagesse, Tracey J. Mercier, Heidi M. Leathers-Miller, Kira K. Timm, Ronald M. Drake, Andrea D. Cicero, Phuong A. Le