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.
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A gender and social vulnerability assessment approach A gender and social vulnerability assessment approach
The report on an approach for gender and social vulnerability assessment is a supporting tool – or a guiding note – to assist the MRC to conduct the gender and vulnerability assessment in the Lower Mekong Basin. While the approach focuses on floods, droughts, and extreme storm events for the MRC’s future application, the overall gender and vulnerability framework described in this report...
Authors
Saira Haider, Kathryn Powlen, Nina Burkardt, Matthew E. Andersen
Induced seismicity strategic vision Induced seismicity strategic vision
Executive Summary The U.S. Geological Survey has a long history of contributions to the understanding and resolution of various scientific questions related to earthquakes associated with human activities, referred to as induced seismicity. Work started with the Rocky Mountain Arsenal studies in the 1960’s (Healy and others, 1968) when it was first discovered that fluid waste-disposal...
Authors
Elizabeth S. Cochran, Justin L. Rubinstein, Andrew J. Barbour, J. Ole Kaven
California community Earth Models for Seismic Hazard Assessments workshop report California community Earth Models for Seismic Hazard Assessments workshop report
The California Community Earth Models for Seismic Hazard Assessments Workshop (https://www.scec.org/workshops/2024/california-community-models) was held online March 4–5, 2024, with more than 200 participants over the two days. In this report, we provide a summary of the key points from the presentations and discussions. We highlight three use cases that drive the development of...
Authors
Brad T. Aagaard, Scott Marshall, Sarah E. Minson, Dan Boyd, Marine A. Denolle, Eric J. Fielding, Alice-Agnes Gabriel, Christine A Goulet, Russell Graymer, Jeanne L. Hardebeck, Alexandra Elise Hatem, Evan Tyler Hirakawa, Tran Huynh, Lorraine Hwang, Karen Luttrell, Kathryn Z. Materna, Laurent Montesi, Michael Oskin, Arthur Rodgers, Arben Pitarka, Judy Zachariasen
Knowledge gaps and opportunities for understanding water-quality processes affecting water availability for beneficial uses Knowledge gaps and opportunities for understanding water-quality processes affecting water availability for beneficial uses
This report describes scientific gaps that limit our ability to predict water-quality effects on water availability for beneficial uses across the United States. Water-quality constituents considered in the report include salinity, geogenic constituents, contaminants of emerging concern, and nitrogen. For each constituent, there is a selection of scientific gaps, approaches, and outcomes...
Knowledge gaps and opportunities in water-quality drivers of aquatic ecosystem health Knowledge gaps and opportunities in water-quality drivers of aquatic ecosystem health
This report identifies key scientific gaps that limit our ability to predict water quality effects on health of aquatic ecosystems and proposes approaches to address those gaps. Topics considered include (1) coupled nutrient-carbon cycle processes and related ecological-flow-regime drivers of ecosystem health, (2) anthropogenic and geogenic toxin bioexposure, (3) fine sediment drivers of...
Extent and duration of cold-water areas associated with side channels and tributaries of the lower Yakima River, Washington, September 2018–20 Extent and duration of cold-water areas associated with side channels and tributaries of the lower Yakima River, Washington, September 2018–20
Previous work on the lower Yakima River, Washington (downstream from Union Gap), has identified several cold-water areas that could be thermal refuges for migrating salmonids. These cold-water areas are characterized by small tributaries that are typically cooler than the main-stem river during summer months (June–August). Twenty-seven temperature sensors were deployed along the lower 90...
Authors
Richard W. Sheibley, Marcella Appel, Rachel Little, James R. Foreman
Prefabricated Zero Ascend Omnispecies (ZAO) modular fish passage modules using advanced manufacturing techniques Prefabricated Zero Ascend Omnispecies (ZAO) modular fish passage modules using advanced manufacturing techniques
The Zero Ascend Omnispecies (ZAO) fish passage attraction module “ZAO Attractor” is a novel system designed to facilitate upstream passage for a broad spectrum of fish species, with a particular focus on American shad and river herring (alewife and/or blueback herring). Combining the use of prefabricated, modular components with advanced manufacturing, the ZAO aims to provide a cost...
Authors
Katherine Leighton, Janine Bryan, Kevin B. Mulligan, Kevin G. Stewart, Paul Jacobson, David Duquette, Ravi Challa
Streamflow, base flow, and precipitation trends and simulated effects of Rush Springs aquifer groundwater withdrawals on base flows upgradient from Fort Cobb Reservoir, western Oklahoma Streamflow, base flow, and precipitation trends and simulated effects of Rush Springs aquifer groundwater withdrawals on base flows upgradient from Fort Cobb Reservoir, western Oklahoma
To better understand the relation between groundwater use in the Rush Springs aquifer and inflows to the Fort Cobb Reservoir, the U.S. Geological Survey, in cooperation with the Bureau of Reclamation, used a previously published numerical groundwater-flow model and historical streamflow records to evaluate four scenarios to investigate how changing groundwater withdrawals could affect...
Authors
A.R. Trevisan, L.G. Labriola, J.H. Ellis
FY 2023 herring disease program annual report FY 2023 herring disease program annual report
No abstract available.
Authors
Paul Hershberger, David James Páez
Surface elevation trends in North Carolina's coastal wetlands Surface elevation trends in North Carolina's coastal wetlands
Coastal wetlands exist in the narrow fringe between uplands and open water and consequently, are uniquely vulnerable to the impacts of sea level rise (SLR). Predictive models suggest that in the coming decades sea level rise will lead to substantial losses of coastal wetland habitat in North Carolina. Empirical measurements of wetland response to SLR are vital for understanding which...
Authors
Robbie Fearn, Cat Bowler, Rick Savage, Pat Donovoan-Bradenburg, Aaron Houran, Reide Corbett, Stu Hamilton, Carolyn Currin, Jenny Davis, Michael Greene, Anna Hilting, Brandon Puckett, Quentin Walker, Justin Ridge, Cayla Cothron, Sarah Spiegler, Marcelo Ardón, Mike Burchell, Nisse Goldberg, Aaron McCall, Eric Soderholm, Christine Voss, Lorie Sutter, Michelle Moorman, Justine Annaliese Neville, Ches Vervaeke
Determining the distribution, status, and linkages of Agassiz's desert tortoise populations in the uplands surrounding the Coachella Valley Determining the distribution, status, and linkages of Agassiz's desert tortoise populations in the uplands surrounding the Coachella Valley
In support of the goals of the Coachella Valley Conservation Commission and the Bureau of Land Management, we performed surveys to determine the status, distribution, demographics, and possible genetic linkages of Agassiz’s desert tortoise (Gopherus agassizii) populations within the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP) area during a multi-decadal...
Authors
Michele R. Puffer, Jeffrey E. Lovich, Kristy L. Cummings
Water resources inventory of the Las Cienegas National Conservation Area, southeastern Arizona Water resources inventory of the Las Cienegas National Conservation Area, southeastern Arizona
The Las Cienegas National Conservation Area was established by the Las Cienegas National Conservation Area Establishment Act of 1999 (Public Law 106–538) and is managed by the Bureau of Land Management. Located in southeastern Arizona, the conservation area contains more than 45,000 acres of rolling grassland, wetlands, and woodlands surrounded by isolated mountain ranges that are part...
Authors
Jon P. Mason