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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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Peak streamflow trends in Minnesota and their relation to changes in climate, water years 1921–2020 Peak streamflow trends in Minnesota and their relation to changes in climate, water years 1921–2020
This report chapter summarizes the effect of hydroclimatic variability of annual peak streamflow in Minnesota and is part of a larger U.S. Geological Survey multistate study to assess potential nonstationarity in annual peak streamflows across the Midwest. Spatial and temporal patterns were examined for nonstationarity in annual peak streamflow, daily mean streamflow, and modeled...
Authors
Tara Williams-Sether, Chris Sanocki
Peak streamflow trends in North Dakota and their relation to changes in climate, water years 1921–2020 Peak streamflow trends in North Dakota and their relation to changes in climate, water years 1921–2020
Standardized guidelines for completing flood-flow frequency analyses are presented in a U.S. Geological Survey Techniques and Methods report known as Bulletin 17C, https://doi.org/10.3133/tm4B5. In recent decades (since about 2000), a better understanding of long-term climatic persistence (periods of clustered floods or droughts, or wet or dry periods) and concerns about potential...
Authors
Karen R. Ryberg, Tara Williams-Sether
North American Waterfowl Management Plan survey regional profile—Southeast region North American Waterfowl Management Plan survey regional profile—Southeast region
Executive Summary Gaining a better understanding of the human dimensions of waterfowl management to inform the North American Waterfowl Management Plan is a valuable but challenging goal for the future success of waterfowl management. Increasing engagement with key stakeholder groups will lead to more support and effective waterfowl management. Social systems are complex because...
Authors
Nicholas W. Cole, David C. Fulton
Bedrock fracture characterization of the New Hampshire State Route 111 bypass, Windham, New Hampshire Bedrock fracture characterization of the New Hampshire State Route 111 bypass, Windham, New Hampshire
Bedrock roadcuts developed with blasting along the New Hampshire State Route 111 bypass in Windham expose the metasedimentary Silurian Berwick Formation and intrusions of multiple phases of foliated to nonfoliated granite to granitic pegmatite of the Devonian New Hampshire Plutonic Suite. Fracture characterization at two roadway rock cuts (roadcuts) included measurement of fractures over...
Authors
Gregory J. Walsh, Nicholas Edwin Powell
Quantifying sea otter abundance, distribution, habitat use, and foraging intake in Cook Inlet, Alaska Quantifying sea otter abundance, distribution, habitat use, and foraging intake in Cook Inlet, Alaska
Following near extirpation from the fur trade, sea otters (Enhydra lutris) have returned to occupy lower Cook Inlet since the 1950s, or earlier, with numbers increasing to ~11,000 and ~9,000 on the west and east side, respectively, by 2017. Northward range expansion on the west side has been negligible for decades with few animals found north of Kamishak Bay, while northward expansion on...
Authors
Daniel Monson, Kimberly A. Kloecker, Nicole LaRoche, Collin Power, Laura Geissinger, Elizabeth Hasan, Tahzay Jones, Ben Weitzman
Watershed hydrology assessment for the Nueces River basin--Appendix A, statistical hydrology. Watershed hydrology assessment for the Nueces River basin--Appendix A, statistical hydrology.
No abstract available.
Authors
David Wallace, Kara M. Watson
Mammalian responses to select Type 3 Watershed Experiment prescriptions in the Olympic Experimental State Forest: A camera-based monitoring approach Mammalian responses to select Type 3 Watershed Experiment prescriptions in the Olympic Experimental State Forest: A camera-based monitoring approach
The Type 3 Watershed Experiment is a landscape-scale management experiment designed to assess the ecological, economic, and social benefits of timber harvest and post-harvest management prescriptions in upland and riparian systems of the Washington Coast Range ecoregion. The experiment is being conducted on state trust lands in the Olympic Experimental State Forest (OESF), which are...
Authors
Katy R Goodwin, Kyle D Martens, Teodora V Minkova, Rebecca M. McCaffery
Mount Spurr Volcano Mount Spurr Volcano
No abstract available.
Authors
Kristi L. Wallace, Christopher F. Waythomas, Michelle L. Coombs, A.M. Nastan
Fisheries research and monitoring activities of the Lake Erie Biological Station, 2024 Fisheries research and monitoring activities of the Lake Erie Biological Station, 2024
A comprehensive understanding of fish populations and their interactions is the cornerstone of modern fishery management and the basis for Lake Erie’s Fish Community Objectives (FCOs) developed in 2020 (Francis et al. 2020). The 2024 U.S. Geological Survey (USGS) Lake Erie Biological Station Annual Report is responsive to these FCOs and the USGS obligations via a Memorandum of...
Authors
Mark Richard Dufour, Francesco Guzzo, Corbin David Hilling, Kevin R. Keretz, Richard Kraus, Richard Cole Oldham, James J. Roberts, Joseph Schmitt
Methodology Methodology
Following the approach developed by Gregory and van Strien (2010), State of the Birds reports focus on composite summaries of population change for collections of species that share common primary habitat or taxonomic affinity. In this report, we provide composite indexes for habitat-obligate species as defined in earlier reports (Grassland, Aridland, Eastern Forest and Western Forest)...
Authors
A. Rodewald, Mike Brasher, John Alexander, Elisabeth M. Ammon, Tracy E. Borneman, Dustin Brewer, Stephen Brown, Jennie N. Duberstein, Beth Flint, Adam Hannuksela, Kathleen Holland, J. A. Hostetler, Edwin Juarez, Robin Kaler, Chris Latimer, Elva Manquera, Kate Martin, Chris McCreedy, Nicole Michel, Corina Newsome, Andrew Olsen, Marc Romano, Kenneth V. Rosenberg, B. Ryder, Rebekah J. Rylander, John R. Sauer, Adam Smith, Dena Spatz, Caleb Spiegel, Tice Supplee, Roberta Swift, Eric VanderWerf, Josh Vest, Olivia Wang
ECCOE Landsat quarterly calibration and validation report—Quarter 3, 2024 ECCOE Landsat quarterly calibration and validation report—Quarter 3, 2024
Executive Summary The U.S. Geological Survey Earth Resources Observation and Science Calibration and Validation (Cal/Val) Center of Excellence (ECCOE) focuses on improving the accuracy, precision, calibration, and product quality of remote-sensing data, leveraging years of multiscale optical system geometric and radiometric calibration and characterization experience. The ECCOE Landsat...
Authors
Md Obaidul Haque, Nahid Hasan, Ashish Shrestha, Rajagopalan Rengarajan, Mark Lubke, Jerad L. Shaw, Kathryn Ruslander, Esad Micijevic, Michael J. Choate, Cody Anderson, Jeff Clauson, Kurt Thome, Ed Kaita, Raviv Levy, Jeff Miller, Leibo Ding