Thickness and other characteristics of overbank sediment deposited during an extreme flood in May 1978 along the Powder River, Montana
John A. Moody, Robert H. Meade
2026, Scientific Investigations Report 2026-5122
An extreme flood on the Powder River in southeastern Montana in May 1978 inundated its valley and deposited sediment on the floodplains and terraces at multiple heights. The recurrence interval for this flood was less than 1 percent in the reach between Moorhead and Broadus, Montana. Peak discharges at the...
Development and assessment of fluorescent-dyed, preserved invasive grass carp (Ctenopharyngodon idella) eggs as surrogates for live eggs in transport and dispersal control experiments
Henry F. Doyle, Benjamin H. Stahlschmidt, Anne Marie Herndon, Vindhyawasini Prasad, Amy E. George, Jesse Robert Fischer, P. Ryan Jackson, Cory D. Suski, Rafael O. Tinoco
2026, River Research and Applications
Invasive species such as grass carp (Ctenopharyngodon idella) pose substantial ecological threats to North American freshwater ecosystems. Understanding their early life stage behavior is critical for management efforts. From spawning to hatching, invasive carp eggs must remain suspended in the water column while drifting downstream for the best chance of...
Channel change and sediment transport in the Puyallup River watershed through 2022
Scott W. Anderson
2026, Preprint
The Puyallup River drains a 990 square mile watershed in western Washington, with headwaters on the glacier-covered flanks of Mount Rainier. Major tributaries include the White, Carbon, and Mowich Rivers. In the levee-confined reaches of the lower watershed, loss of flood conveyance due to sand and gravel deposition has been...
Population and outmigration characteristics of juvenile Bull Trout in a montane ecosystem
James S. Unsworth, Andrew M. Dux, Carlos A. Camacho, Michael C. Quist
2026, Journal of Wildlife Management (89)
Bull Trout Salvelinus confluentus is a federally threatened species in the conterminous United States. Although some populations are stable or increasing, Bull Trout in the United States Fish and Wildlife Service's designated Coeur d'Alene Core Area in Idaho have experienced substantial declines in abundance. Today, the remaining extant population in the Coeur...
Efficacy of oblique bubble screen deterrents on redirecting live eggs and larvae of grass carp (Ctenopharyngodon idella) at different developmental stages
Vindhyawasini Prasad, Juan Martin Andrade Ramos, Cory Suski, P. Ryan Jackson, Amy E. George, Duane C. Chapman, Jesse Robert Fischer, Benjamin H. Stahlschmidt, Rafael O. Tinoco
2025, Water Resources Research (61)
Invasive carp have severely damaged aquatic ecosystems in the USA, particularly in the Mississippi River Basin. Behavioral deterrents have been developed in the last few decades to control population expansion into new ecosystems. However, none of these deterrents are capable of controlling early-life stage carp, which have limited or no...
River ice controls permafrost bank erosion across an Arctic delta
J Arcuri, Irina Overeem, Marisa Repasch, R. S. Anderson, S. P. Anderson, Joshua C. Koch, Frank Urban
2025, Earth Surface Processes and Landforms (50)
Bank erosion in Arctic rivers helps shape channel geometry, mobilizes carbon from permafrost and influences sediment delivery to the Arctic Ocean. On Alaska's Arctic coastal plain, rivers begin flowing during snowmelt in late spring while extensive river ice persists in channels, such that hydraulics are altered and water is kept...
An inset groundwater-flow model to evaluate the effects of layering configuration on model calibration and assess managed aquifer recharge near Shellmound, Mississippi
Moussa Guira, Jonathan P. Traylor, Andrew T. Leaf, Alec R. Weisser
2025, Scientific Investigations Report 2025-5055
The U.S. Geological Survey has developed a high-resolution inset groundwater-flow model in the Mississippi Delta as part of an interdisciplinary collaboration coordinated by the Mississippi Alluvial Plain project to provide a tool that stakeholders can use to support water-resource management decisions. Groundwater withdrawals from the Mississippi River Valley alluvial (MRVA)...
Non-native prey availability and over-compensatory density dependence drive population dynamics of a native fish predator
Madaline Cochrane, Timothy Cline, Travis S. Schmidt, James Dunnigan, Will Warnock, Clint C. Muhlfeld
2025, Ecological Applications (35)
Understanding the factors that regulate population dynamics is crucial for conserving imperiled species. Bull trout (Salvelinus confluentus), a piscivorous salmonid and one of North America's most threatened cold-water species, has declined significantly due to habitat loss, overfishing, invasive species, and climate change. While recovery efforts have primarily targeted these threats,...
Controls on sediment transport and storage in the Little Snake, Yampa, and Green Rivers in the vicinities of Dinosaur National Monument and Ouray National Wildlife Refuge, Colorado and Utah, with implications for fish habitat in the middle Green River
David J. Topping, Ronald E. Griffiths, Joel A. Unema, David J. Dean
2025, Scientific Investigations Report 2025-5075
The transport of sand and finer sediment in the Yampa and Green river network is typically in disequilibrium with the local sediment supply because of the partial decoupling of the sources of water and sediment: most of the water is supplied farther upstream than most of the sediment. This decoupling...
Flood-Inundation Maps of the Current and Jacks Fork Rivers including the Ozark National Scenic Riverways, Southeast Missouri, 2023
David C. Heimann, Jason L. High, Allison A. Atkinson, Paul H. Rydlund Jr.
2025, Scientific Investigations Report 2025-5092
Digital flood-inundation maps for a 131.8-mile reach of the Current River and a 44.6-mile reach of the Jacks Fork River, in southeast Missouri, were created by the U.S. Geological Survey (USGS) in cooperation with the Ozark Foothills Regional Planning Commission and the South Central Ozark Council of Governments. The maps...
Assessment of channel morphology, hydraulics, and bedload transport along the Siletz River, western Oregon
Krista L. Jones, Mackenzie K. Keith, Tessa M. Harden, James S. White, Stan van de Wetering, Jason B. Dunham
2025, Scientific Investigations Report 2025-5063
Significant FindingsChinook salmon (Oncorhynchus tshawytscha) and Pacific lamprey (Entosphenus tridentatus) are native, anadromous fish species in the Siletz River Basin, western Oregon, that face many threats to their survival in freshwater and the ocean. The Confederated Tribes of Siletz Indians of Oregon seek to mitigate freshwater threats to Chinook salmon...
An integrated sensor network and data driven approach to satellite remote sensing of dissolved organic matter
Dulcinea Marie Avouris, Erin L Hestir, Jacob Fleck, Jeffrey A. Hansen, Brian A. Bergamaschi
2025, Earth and Space Science (12)
Traditional remote sensing retrieval models for water quality have historically relied on limited, localized data sets due to the prohibitive costs of extensive field campaigns and logistical challenges of collecting match-up data with satellite overpasses. As a result, these models often lack generalizability across seasons, tides, and sites. Furthermore, small...
Dispersal and survival of sea lamprey in Lake Erie and connected waterways
Sean Alois Lewandoski, Christopher M. Holbrook
2025, Canadian Journal of Fisheries and Aquatic Sciences (82) 1-13
Invasive sea lamprey inhabiting the North American Laurentian Great Lakes are the target of the world’s longest running vertebrate invasive species control program. However, metapopulation dynamics comprising survival and dispersal during the sea lampreys’ lake-resident life stages are poorly understood. We applied acoustic telemetry and continuous-time multistate capture-recapture modeling to...
Deformity, erosion, lesion, tumor, and parasite (DELT) anomalies in fish communities of the Chesapeake Bay watershed, USA: A regional assessment and potential landscape drivers
Sara E. Breitmeyer, Paul McLaughlin, Vicki S. Blazer, Gregory E. Noe, Kelly Smalling, Timothy A. Wertz, Tyler Wagner
2025, Environmental Monitoring and Assessment (197)
Fish diseases in freshwater ecosystems pose significant ecological and socioeconomic challenges, yet monitoring them in wild populations is complex due to interactions between pathogens, hosts, and environmental conditions. We examine the prevalence and watershed-scale landscape drivers of external deformity, erosion, lesion, tumor, and parasite (DELT) anomalies in 57 riverine fish...
Estimating drivers and identifying uncertainties in smallmouth bass population dynamics in an invaded river network
Lindsey A. Bruckerhoff, Charles B. Yackulic, Drew Elliot Eppehimer, Kevin R. Bestgen, M. Tildon Jones, Chris Michaud
2025, Canadian Journal of Fisheries and Aquatic Sciences (82) 1-24
Smallmouth bass (Micropterus dolomieu) is an important recreational sportfish and destructive non-native species when introduced into freshwater habitats. There is therefore a need to understand the drivers of, and uncertainties in, smallmouth bass population dynamics for various management objectives. We combined long-term smallmouth bass catch-effort and early life history data...
Daily fluctuating flows affect riparian plant species distributions from local to regional scales
Bradley J. Butterfield, Emily C. Palmquist
2025, Applied Vegetation Science (28)
AimsThe number of hydropower dams has grown globally over recent decades, with significant impacts on downstream riparian plant communities. Many of these dams generate daily fluctuating flows known as hydropeaking to meet sub-daily variation in energy demands. Hydropeaking can significantly impact riparian plant communities, with obligate riparian species tending to...
Shared leadership can promote success in collaborative research networks in ecology
Daniel C. Allen, Amy J. Burgin, Erin C. Seybold, Walter K. Dodds, Michelle H. Busch, Anna Bergstrom, Corey A. Krabbenhoft, Kate S. Boersma, James C. Stegen, Julian D. Olden, Carla L. Atkinson, C. Nathan Jones, Thibault Datry, Sarah E. Godsey, Arial J. Shogren, Annika W. Walters, Stephen Plont, Richard H. Walker, Margaret Shanafield, Meryl C. Mims, Adam N. Price, Chelsea R. Smith, Yaqi You, Michael T. Bogan, Ryan M. Burrows, Mathis L. Messager, Rachel Stubbington, Margaret A. Zimmer
2025, Functional Ecology
1. While collaborative science is becoming the norm in ecology, many ecologists participating in collaborations are less aware of the body of research that studies the processes by which collaborative teams organize and communicate.2. Here, we discuss how we successfully used a shared leadership model in the Dry Rivers Research...
Widespread thiamine deficiency in California salmon linked to an anchovy-dominated marine prey base
Nate Mantua, Heather M. Bell, Anne E. Todgham, Miles E. Daniels, Jacques Rinchard, Jarrod R. Ludwig, John Field, Steven T Lindley, Freya Elizabeth Rowland, Catherine A. Richter, David Walters, Bruce P. Finney, Anne R. Distajo Haskell, Donald Tillitt, Dale C. Honeyfield, Taylor N. Lipscomb, Kevin Kwak, Jason Kindopp, Dennis E. Cocherell, Abigail Ward, Thomas H. Williams, Jeff Harding, Nann A. Fangue, Carson Jeffres, Rocio Iliana Ruiz-Cooley, Steven Litvin, Scott Foott, Mark Adkison, Brett Kormos, Peggy Harte, Frederick S. Colwell, Christopher P. Suffridge, Kelly Shannon, Amanda Cranford, Charlotte Ambrose, Aimee N. Reed, Rachel C. Johnson
2025, Proceedings of the National Academy of Sciences (122)
Thiamine (vitamin B1) deficiency in marine systems is a globally significant threat to marine life. In 2020, newly hatched Chinook salmon (Oncorhynchus tshawytscha) fry in California’s Central Valley (CCV) hatcheries swam in corkscrew patterns and died at unusually high rates due to a lack of this essential vitamin. We subsequently...
The stratigraphic record of the mid-Piacenzian warm period on the Atlantic Coastal Plain
Harry J. Dowsett, Whittney Spivey
2025, Stratigraphy (22) 81-97
Anthropogenic climate change is an existential threat to our planet, impacting everything from the delicate balance of ecosystems to the availability of vital resources. Coastal regions, particularly vulnerable to the impacts of climate change due to rising sea levels and changing weather patterns, are experiencing increased erosion, flooding, and habitat...
Distribution, abundance, and breeding activities of Southwestern Willow Flycatchers (Empidonax traillii extimus) at select locations on the San Luis Rey River, San Diego County, California—2024 data summary
Scarlett L. Howell, Barbara E. Kus
2025, Data Report 1212
We surveyed for Southwestern Willow Flycatchers (Empidonax traillii extimus; flycatcher) at select locations along the San Luis Rey River, including along the middle San Luis Rey River near Bonsall and the upper San Luis Rey River near Santa Ysabel, California, in 2024. Surveys were completed at six locations: two along...
Flood-inundation maps for 14.8 miles of Little and Big Papillion Creeks in Omaha, Nebraska, 2023
Kellan R. Strauch, Bradley R. Hoefer
2025, Scientific Investigations Report 2025-5032
Digital flood-inundation map libraries for two reaches that constitute 14.8 miles of Little and Big Papillion Creeks in Omaha, Nebraska, were created by the U.S. Geological Survey (USGS) in cooperation with the Papio-Missouri River Natural Resource District. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping...
Calibration of the Stream Salmonid Simulator (S3) model to estimate annual survival, movement, and food consumption by juvenile Chinook salmon (Oncorhynchus tshawytscha) in the restoration reach of the Trinity River, California, 2006–18
John M. Plumb, Russell W. Perry, Kyle De Juilio
2025, Open-File Report 2024-1070
Executive SummaryThe Trinity River is managed in two sections: (1) from the upper 64-kilometer “restoration reach” downstream from Lewiston Dam to the confluence with the North Fork Trinity River, and (2) the 120-kilometer lower Trinity River downstream from the restoration reach. The Stream Salmonid Simulator (S3) has been previously applied...
Fisheries dependent and independent data inform a capture technique for an emerging invasive fish species in the mainstem Mississippi River; Black Carp Mylopharyngodon piceus
Patrick Kroboth, Michael E. Colvin, Courtney Broaddus
2025, Fisheries Research (285)
Black Carp Mylopharyngodon piceus were imported into the United States in the 1970s and 1980s for use in aquaculture; escape occurred and reported wild captures increased. Lacking species-specific capture methods, we assessed fisheries dependent incidental Black Carp catches for a common method, hoop nets, by kernel density analysis to identify an area...
Spatial stream network modeling of water temperature within the White River Basin, Mount Rainier National Park, Washington
Andrew S. Gendaszek, Anya C. Leach, Kristin L. Jaeger
2025, Scientific Investigations Report 2025-5029
Water temperature is a primary control on the occurrence and distribution of fish and other ectothermic aquatic species. In the Pacific Northwest, cold-water species such as Pacific salmon (Oncorhynchus spp.) and bull trout (Salvelinus confluentus) have specific temperature requirements during different life stages that must be met to ensure the...
Development of species-specific primers for the identification of Atlantic and shortnose sturgeons
Miluska Olivera Hyde, David C. Kazyak
2025, Conservation Genetics Resources (17) 59-65
Atlantic (Acipenser oxyrinchus oxyrinchus) and shortnose sturgeon (Acipenser brevirostrum) are broadly distributed along the Atlantic Coast of North America, where they use rivers, estuaries, and coastal habitats. In order to support management under the U.S. Endangered Species Act, it is important to understand when and where these fish occur. However,...
