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.

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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January 1, 2025

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

Ecosystems Mission Area, Northern Prairie Wildlife Research Center

January 1, 2025

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

Ecosystems Mission Area, Western Fisheries Research Center

January 1, 2025

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

Volcano Hazards Program, Volcano Science Center

January 1, 2025

Ophidiomycosis – Snake Fungal Disease (SFD) Ophidiomycosis – Snake Fungal Disease (SFD)

No abstract available.

Authors

Daniele Marini, Jeffrey M. Lorch, Francesco C. Origgi

Ecosystems Mission Area, National Wildlife Health Center

January 1, 2025

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

Geology, Minerals, Energy, and Geophysics Science Center

January 1, 2025

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

Cooperative Research Units