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: 84730
Improving predictions of water supply in the Rio Grande under changing climate conditions Improving predictions of water supply in the Rio Grande under changing climate conditions
This product is a case study summarizing the original work authored by David Gutzler, Shaleene Chavarria, and Nels Bjarke. The content will be part of a collection of Case Studies shared via the Collaborative Conservation and Adaptation Strategy Toolbox (CCAST). The research featured in this case study is an analysis of historical observations and climate models developed by the US...
Authors
Ilana Renae Casarez
Looking forward, looking back: Building resilience today community report: Kotlik, AK Looking forward, looking back: Building resilience today community report: Kotlik, AK
The Alaska Climate Adaptation Science Center (AK CASC), in partnership with the Aleutian Pribilof Islands Association (APIA), designed the Looking Forward, Looking Back: Building Resilience Today (hereafter ‘BRT’) project as a series of trainings and workshops with tribal community leadership and members. The overarching goal of the project was to collaboratively develop the Indigenous...
Authors
Community of Kotlik, Jeremy S. Littell, Nancy Fresco, Ryan C. Toohey, Malinda Chase
Applied lunar science on Artemis III in support of in situ resource utilization Applied lunar science on Artemis III in support of in situ resource utilization
The Artemis Science Goals and Strategy are focused on basic or fundamental science, neglecting the vital field of “applied” geoscience that fits between “pure” science and engineering to provide near-term practical benefits for human activities.
Authors
Laszlo P. Keszthelyi, Kristen A. Bennett, Lisa R. Gaddis, Lillian R. Ostrach, Lauren A. Edgar
Technical memorandum: Compound specific isotope analysis, Oak Grove Village well site OU1, Franklin County, Missouri Technical memorandum: Compound specific isotope analysis, Oak Grove Village well site OU1, Franklin County, Missouri
A study involving Compound Specific Isotope Analysis (CSIA) of trichloroethene (TCE) in groundwater at the Oak Grove Village (OGV) Well Site was conducted by the U.S. Environmental Protection Agency (EPA) in 2014 in an effort to fingerprint the source(s). This technical memorandum, written as a joint effort between HydroGeoLogic, Inc. (HGL) and the U.S. Geological Survey (USGS) Central...
Authors
Phyliss Chase, John G. Schumacher
Understanding the impacts of surface-groundwater conditions on stream fishes under altered baseflow conditions Understanding the impacts of surface-groundwater conditions on stream fishes under altered baseflow conditions
Persistence of aquatic fauna depends on the conditions and connectivity of surface water and groundwater. In light of altered baseflows and both current and future predicted increases in stream temperatures, it is important to assess current thermal conditions, examine thermal responses of aquatic fauna, and evaluate water-management practices. Our study objectives were to determine (1)...
Authors
Shannon K. Brewer, G. Fox, Y. Zhou, J. Alexander
Using advanced population genomics to better understand the relationship between offshore and spawning habitat use for Atlantic Sturgeon Using advanced population genomics to better understand the relationship between offshore and spawning habitat use for Atlantic Sturgeon
Atlantic Sturgeon (Acipenser oxyrinchus oxyrinchus) are a large-bodied anadromous fish that historically supported important fisheries along the east coast of the United States. Following years of overharvest and habitat degradation, populations experienced severe declines. In 2012, the National Marine Fisheries Service listed Atlantic Sturgeon under the Endangered Species Act (ESA; 61...
Authors
David C. Kazyak, Aaron W. Aunins, Robin L. Johnson, Barbara A. Lubinski, Michael S. Eackles, Tim L. King
Benthic infaunal communities of Baltimore and Norfolk Canyons Benthic infaunal communities of Baltimore and Norfolk Canyons
The imperative for finding, cataloging, and understanding continental margin diversity derives from the many key functions, goods and services provided by margin ecosystems and by an increasingly deleterious human footprint on our continental slopes (Levin and Dayton 2009). Progress in seafloor mapping technology and direct observation has revealed unexpected heterogeneity, with a mosaic...
Authors
Craig M. Robertson, Jill R. Bourque, Amanda Demopoulos
2020 drought in New England 2020 drought in New England
Below average and infrequent rainfall from May through September 2020 led to an extreme hydrologic drought across much of New England, with some areas experiencing a flash drought, reflecting its quick onset. The U.S. Geological Survey (USGS) recorded record-low streamflow and groundwater levels throughout the region. In September, the U.S. Department of Agriculture (2020) declared...
Authors
Pamela J. Lombard, Janet R. Barclay, Dee-Ann E. Crozier
Analysis of remedial scenarios affecting plume movement through a sole-source aquifer system, southeastern Nassau County, New York Analysis of remedial scenarios affecting plume movement through a sole-source aquifer system, southeastern Nassau County, New York
A steady-state three-dimensional groundwater-flow model based on present conditions is coupled with the particle-tracking program MODPATH to assess the fate and transport of volatile organic-compound plumes within the Magothy and upper glacial aquifers in southeastern Nassau County, New York. Particles are forward tracked from locations within plumes defined by surfaces of equal...
Authors
Paul E. Misut, Donald A. Walter, Christopher Schubert, Sarken Dressler
Asian carp population modeling to support an adaptive management framework Asian carp population modeling to support an adaptive management framework
This Monitoring and Response Plan provides the Asian Carp Regional Coordinating Committee (ACRCC) with updates on FWS and USGS modeling efforts for the Spatially Explicit Asian carp Population (SEAcarP) model. For FY2020, efforts are underway to parameterize and analyze the SEAcarP model. Themes: invasive species; Asian carp; Great Lakes.
Authors
Jahn L. Kallis, Richard A. Erickson, Mark W. Fritts
Assessment of water and proppant quantities associated with petroleum production from the Eagle Ford Group, Gulf Coast, Texas, 2019 Assessment of water and proppant quantities associated with petroleum production from the Eagle Ford Group, Gulf Coast, Texas, 2019
Building on a geology-based assessment of undiscovered, technically recoverable petroleum resources in the Eagle Ford Group in south Texas, the U.S. Geological Survey has estimated the required water and proppant demands and formation water production volumes associated with possible future development of these petroleum resources. The results of the water and proppant assessment are...
Authors
Nicholas J. Gianoutsos, Seth S. Haines, Brian A. Varela, Katherine J. Whidden, Justin E. Birdwell, Lauri A. Burke, Ronald M. Drake, Thomas M. Finn, Katherine L. French, Karen E. Jenni, Scott A. Kinney, Phuong A. Le, Heidi M. Leathers-Miller, Kristen R. Marra, Tracey J. Mercier, Stanley T. Paxton, Janet K. Pitman, Christopher J. Schenk, Brian N. Shaffer, Chilisa M. Shorten, Marilyn E. Tennyson, Cheryl A. Woodall
DGMETA (version 1)—Dissolved gas modeling and environmental tracer analysis computer program DGMETA (version 1)—Dissolved gas modeling and environmental tracer analysis computer program
DGMETA (Dissolved Gas Modeling and Environmental Tracer Analysis) is a Microsoft Excel-based computer program that is used for modeling air-water equilibrium conditions from measurements of dissolved gases and for computing concentrations of environmental tracers that rely on air-water equilibrium model results. DGMETA can solve for the temperature, salinity, excess air, fractionation of...
Authors
Bryant C. Jurgens, J. K. Böhlke, Karl B. Haase, Eurybiades Busenberg, Andrew G. Hunt, Jeffrey A. Hansen