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: 84793
Woods Hole Coastal and Marine Science Center—2023 annual report Woods Hole Coastal and Marine Science Center—2023 annual report
The 2023 annual report of the U.S. Geological Survey Woods Hole Coastal and Marine Science Center highlights accomplishments of 2023, includes a list of 2023 publications, and summarizes the work of the center, as well as the work of each of its science groups. This product allows readers to gain a general understanding of the focus areas of the center’s scientific research and learn...
Authors
Sara Ernst
Tsunami and seiche hazards in site evaluation for nuclear installations Tsunami and seiche hazards in site evaluation for nuclear installations
No abstract available.
Authors
Intenational Atomic Energy Agency, Eric L. Geist
Statistical review of systematic reconnaissance flight (SRF) surveys (2008-2023) for monitoring American alligator (Alligator mississippiensis) nests in Everglades National Park Statistical review of systematic reconnaissance flight (SRF) surveys (2008-2023) for monitoring American alligator (Alligator mississippiensis) nests in Everglades National Park
We reviewed current (2008-2023) protocols for monitoring American alligator nests in Everglades National Park (ENP) using a qualitative statistical review framework that emphasizes connecting measurable objectives with evaluation of survey design elements. Our review outlined the statistical assumptions that, if severely violated, would prevent defensible inferences from being drawn...
Authors
Camille Julia Rieber, Kathryn Irvine, Tylan Dean, Kelly McCaffrey, Mark Parry, Bradley A. Strickland
National Seed Strategy progress report for 2022-2023 National Seed Strategy progress report for 2022-2023
No abstract available.
Authors
Laura Cecilia Shriver, Claudia Mengelt
A review of the effects of climate change on visitor use in US public lands and waters A review of the effects of climate change on visitor use in US public lands and waters
Climate change is affecting recreational visitor use in U.S. public lands and waters, causing changes to visitation levels, timing of trips, activity participation, and visitor safety. This report reviews the literature on how climate change is influencing visitor use in the United States and how visitor use may be affected in the future. Our goal is to provide the current state of the...
Authors
Emily J. Wilkins, Sarah Lynn Rappaport Keener, Wylie Carr, Julianne Reas, Samantha G. Winder, Spencer A. Wood
Terrestrial ecosystem health and biodiversity Terrestrial ecosystem health and biodiversity
No abstract available.
Authors
Stephen D. LeDuc, James N. Carleton, Alison Duff, Tara Greaver, Henriette Jager, S. Douglas Kaylor, Leigh C. Moorhead, Clint Otto, R. Byron Rice
Wind River subbasin restoration: Annual report of U.S. Geological Survey activities January 2023 through December 2023 Wind River subbasin restoration: Annual report of U.S. Geological Survey activities January 2023 through December 2023
We sampled juvenile wild Oncorhynchus mykiss (Steelhead Trout) in headwater streams of the Wind River, WA, to characterize population attributes and investigate life-history metrics, particularly migratory patterns, and early life-stage survival. We used passive integrated transponder (PIT) tagging and a series of instream PIT-tag interrogation systems (PTISs) to track juveniles and...
Authors
Ian Jezorek
Glass laser ablation-inductively coupled plasma-mass spectrometry analysis methods, precision, and accuracy data for tephra studies in Alaska Glass laser ablation-inductively coupled plasma-mass spectrometry analysis methods, precision, and accuracy data for tephra studies in Alaska
This publication reports the analytical conditions, standard reference material (SRM) results, and preferred post-processing methodologies for laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) measurements supporting tephra studies in Alaska between 2018 and 2024. We evaluate the long-term accuracy and precision of our methodologies by comparing our calculated SRM
Authors
Jordan Edward Lubbers, Matthew W. Loewen
Ophidiomycosis – Snake Fungal Disease (SFD) Ophidiomycosis – Snake Fungal Disease (SFD)
No abstract available.
Authors
Daniele Marini, Jeffrey M. Lorch, Francesco C. Origgi
Field trip to a Laramide shallow subduction channel: Orocopia Schist in the Gavilan Hills, southeasternmost California; with incidental localities for three blue minerals Field trip to a Laramide shallow subduction channel: Orocopia Schist in the Gavilan Hills, southeasternmost California; with incidental localities for three blue minerals
No abstract available.
Authors
Gordon B. Haxel, Carl E. Jacobson, Gabe S. Epstein
Restoring aquatic habitats through dam removal Restoring aquatic habitats through dam removal
This report presents results from a four-year project (2018–2022) to document the effects of small, run-of-river dams and dam removal on water quality (stream temperature and dissolved oxygen (DO)), aquatic macroinvertebrates, and fishes. Temperature and DO are critical water quality parameters that shape biogeochemical processes and biotic assemblages in streams. Macroinvertebrate and...
Authors
Katherine M. Abbott, Allison H. Roy, Keith Nislow
Simulating present and future groundwater/surface-water interactions and stream temperatures in Beaver Creek, Kenai Peninsula, Alaska Simulating present and future groundwater/surface-water interactions and stream temperatures in Beaver Creek, Kenai Peninsula, Alaska
In many places, coldwater ecosystems are facing increasing pressure from anthropogenic warming. This study examined stream temperatures and the water balance in the Beaver Creek watershed on the Kenai Peninsula in south-central Alaska—an area that is experiencing rapid warming. Low-gradient streams near the Kenai coast provide important spawning and rearing habitat for salmon but may be...
Authors
Andrew T. Leaf, Megan J. Haserodt, Benjamin E. Meyer, Stephen, M. Westenbroek, Joshua C. Koch