Proceedings of the Floodplain Vegetation Monitoring Workshop for the Long Term Resource Monitoring Element of the Upper Mississippi River Restoration Program, January 7–8, 2025, Moline, Illinois
Shelby A. Weiss, Matthew L. Trumper, Nathan R. De Jager, Lyle J. Guyon, Molly Van Appledorn
2026, Open-File Report 2026-1001
Preface In anticipation for increased funding made possible by the Water Resources Development Act of 2020, the Upper Mississippi River Restoration (UMRR) Program identified a need to conduct river-wide assessments of floodplain vegetation. In January 2025, we assembled a group of subject matter experts to perform the following tasks:Review Upper Mississippi...
Albuquerque Seismological Laboratory strategic vision
Adam T. Ringler, David C. Wilson, Robert Anthony, Corey I. Beutel, Andrew Holcomb, Charles R. Hutt, Tom Telesha
2026, Circular 1563
This circular presents a strategic outlook for the U.S. Geological Survey (USGS) Albuquerque Seismological Laboratory (ASL) for the next 10 years (2026–36). The ASL is a USGS field office in the Geological Hazards Science Center that operates portions of the Advanced National Seismic System and the Global Seismographic Network and...
Opportunities and challenges in using Solid Phase Adsorption Toxin Tracking (SPATT) samplers for monitoring cyanotoxins in freshwater and estuarine environments
Andrea Cecile Jaegge, Keith Bouma-Gregson, Thomas D. Byl, Kurt D. Carpenter, Victoria Christensen, Rebecca Michelle Gorney, Jennifer L. Graham, Heather A. Heckathorn, Hayley T. Olds, Pamela A. Reilly, Joshua J. Rosen, Michael D.W. Stouder
2026, Scientific Investigations Report 2025-5093
Cyanobacterial toxins (cyanotoxins) represent a substantial threat to drinking water supplies and safe recreational uses of freshwater resources in watersheds worldwide. Monitoring cyanotoxins can be difficult because toxin events are variable in both space and time, are not always persistent, can be moved easily by wind and currents, and may...
Phytoplankton responses to experimental nitrogen and phosphorus loading in the eutrophic and colored Caloosahatchee River, Florida
Viviana Mazzei, Keith A. Loftin, Emily Karwacki, Jose V. Lopez, Lauren E. Krausfeldt, Barry H. Rosen, Hidetoshi Urakawa
2026, Scientific Investigations Report 2026-5141
The Caloosahatchee River, located in southwest Florida, is a eutrophic and colored river that flows from Lake Okeechobee westward into its estuary and the Gulf of America. Cyanobacterial harmful algal blooms (HABs) are a documented problem along this freshwater-to-marine waterway where nutrient enrichment has been identified as a key factor...
Occurrence of cyanobacteria and associated cyanotoxins in the Raritan Basin Water Supply Complex, New Jersey, August 2020 to August 2021
Rebecca Michelle Gorney, Heather A. Heckathorn, Kyle Clonan, Pamela A. Reilly, Kathryn Cahalane, Bradley William Bjorklund
2026, Scientific Investigations Report 2026-5128
Harmful algal blooms, particularly cyanobacteria harmful algal blooms (cyanoHABs), have emerged as a substantial global concern because of their detrimental effects on water quality and aquatic ecosystem health. CyanoHABs can produce cyanotoxins, which pose serious health risks to humans and wildlife, such as liver failure and respiratory distress. This is...
Arsenic and isotope concentrations in the lower Platte River valley of eastern Nebraska, early 1970s to 2023
Matthew T. Moser, Mikaela L. Cherry, Brent M. Hall
2026, Scientific Investigations Report 2026-5138
The City of Lincoln, Nebraska, has been monitoring concentrations of arsenic in their source water and evaluating their options for treatment and removal since at least 2002. In 2022, the City of Lincoln, Nebr., with funding assistance from the Nebraska Water Sustainability Fund, began cooperating with the U.S. Geological Survey...
Woods Hole Coastal and Marine Science Center—2024 annual report
Sara Ernst
2026, Circular 1564
The 2024 annual report of the U.S. Geological Survey Woods Hole Coastal and Marine Science Center highlights accomplishments of 2024, includes a list of 2024 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...
Escherichia coli monitoring and assessment in 2022 and 2023 after beach restoration at Lake St. Clair Metropark Beach, Macomb County, Michigan
Hayden A. Lockmiller, Victoria (Tori) Byers, Lisa R. Fogarty
2026, Scientific Investigations Report 2026-5134
Lake St. Clair Metropark Beach in Michigan has a history of closures because of elevated Escherichia coli (E. coli) concentrations in its recreational waters. To reduce closures, restoration projects were implemented in 2021 to deter waterfowl from congregating on the beach. In this study, the U.S. Geological Survey, in cooperation...
Simulation of groundwater flow to evaluate hydrogeologic controls on a PFAS plume, Coakley Landfill Superfund Site, Rockingham County, New Hampshire
Phil Harte, Andrew L. Collins
2026, Preprint
Per- and polyfluoroalkyl substances (PFAS), including perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), have been detected at combined concentrations above 2,000 nanograms per liter (ng/L) at groundwater seep locations near the Coakley Landfill Superfund site, in North Hampton, New Hampshire. The landfill was active from 1972 to 1985. An impermeable...
Yellowstone Volcano Observatory 2024 annual report
Yellowstone Volcano Observatory
2026, Circular 1566
The Yellowstone Volcano Observatory (YVO) monitors volcanic and hydrothermal activity associated with the Yellowstone magmatic system, carries out research into magmatic processes occurring beneath Yellowstone Caldera, and issues timely warnings and guidance related to potential future geologic hazards. YVO is a collaborative consortium that includes the U.S. Geological Survey (USGS),...
Selected water-quality data from the Cedar River and Cedar Rapids well fields, Cedar Rapids, Iowa, 2017–22
Shannon M. Meppelink, Stephen J. Kalkhoff
2026, Data Report 1224
The Cedar River alluvial aquifer is the source of drinking water in Cedar Rapids, Iowa. Production wells are completed in the alluvial aquifer approximately 40 to 80 feet below land surface. The City of Cedar Rapids and the U.S. Geological Survey have studied the groundwater-flow system and water quality of...
Mineral chemistry perspective on remobilization of stored magma at Kamakai'a Hills, Southwest Rift Zone of Kilauea, Island of Hawai'i, USA
Drew T. Downs, May Sas
2026, Journal of Volcanology and Geothermal Research (474)
Differentiated magmas stored in the rift zones of Kīlauea have received more attention in recent years following eruption of andesite during the early phase of 2018 lower East Rift Zone activity. Despite this growing interest, some of the most voluminous eruptions of differentiated rift zone magmas remain...
Simulated seasonal loads of total nitrogen and total phosphorus by major source from watersheds draining to Washington waters of the Salish Sea, 2005 through 2020
Noah Schmadel, Cristiana Figueroa-Kaminsky, Daniel Wise, Jamie K. Wasielewski, Zachary Johnson, Robert W. Black
2026, Scientific Investigations Report 2026-5001
The U.S. Geological Survey and the Washington State Department of Ecology (Ecology) have developed watershed models of seasonal load estimates of total nitrogen (TN) and total phosphorus (TP) discharging into the Washington State waters of the Salish Sea from 2005 through 2020. The modeling approach used was dynamic SPARROW (SPAtially...
Influence of modeling assumptions on pedestrian evacuation success for non-eruptive lahar hazards at Mount Rainier, Washington
Nathan J. Wood, Jeff Peters
2026, International Journal of Disaster Risk Reduction (139)
Previous efforts to characterize lahar threats posed to communities downstream of volcanoes have focused primarily on delineating hazard zones that lack information on lahar-arrival times and exposure estimates that implicitly treat threats to be the same regardless of distance from the volcano. Estimated lahar-arrival times, travel times for individuals to...
Towards affordable wetland evapotranspiration monitoring using the Variance-Bowen Ratio method: Insights from three contrasting wetlands
Tianxin Wang, Gabriel B. Senay, Joseph Verfaille, Daphne J. Szutu, MacKenzie Friedrichs, Jack R. Eggleston, Dennis Baldocchi
2026, Water Resources Research (62)
Accurate measurement of evapotranspiration (ET) is essential for sustainable water management. Standard methods such as eddy covariance (EC) are costly, while alternatives such as surface renewal are cheaper but require calibration and complex data processing. This study evaluates the utility of the Variance-Bowen Ratio (VBR) method for estimating ET across...
Global glacier mass change in 2025
Michael Zemp, Ethan Z. Welty, Samuel U. Nussbaumer, Jacqueline Bannwart, Isabelle Gärtner-Roer, Albin Wells, Andreas Peter Ahlstrøm, Brian Anderson, Liss Marie Andreassen, Mohd. Farooq Azam, Jamie Barnett, Carlo Baroni, Nicholas Edward Barrand, Andreas Bauder, Eric Bernard, Etienne Berthier, Giulia Bertolotti, Tobias Bolch, Mylène Bonnefoy-Demongeot, Matthias H. Braun, David Burgess, David Cappelletti, Jonathan L. Carrivick, Luca Carturan, Daniele Cat Berro, Jorge Luis Ceballos, Guillermo Cobos, Rolando Cruz, Nicolas Cullen, Bolívar Cáceres, Johanna Dahlkvist, Otgonbayar Demberel, Simon de Villiers, Roberto Dinale, Eugene Drozdov, Inés Dussaillant, Luzmila Dávila, Nelly Elagina, Hallgeir Elvehøy, Alexander Erofeev, Daniel Falaschi, Andrea Fischer, Mauro Fischer, Caitlyn Florentine, Koji Fujita, Stephan Peter Galos, Ayon Garcia, Noel Gourmelen, Federico Grosso, Afanasiy Gubanov, Andri Gunnarsson, Anne Guyez, Lea Hartl, Martin Hoelzle, Jorge Huenante, Romain Hugonnet, Matthias Huss, Bernhard Hynek, Takuro Imazu, Rodolfo Iturraspe, Livia Jakob, Sharad Joshi, Neamat Karimi, Nina Kirchner, Bjarne Kjøllmoen, Jack Kohler, Stanislav Kutuzov, Ivan Lavrentiev, James Matthew Lea, Amerigo Lendvai, Huilin Li, Shenghai Li, Zhongqin Li, Andreas Linsbauer, Sebastián Marinsek, Enrico Mattea, Christoph Mayer, Christopher McNeil, Luca Mercalli, Alexandra Messerli, Carolyn Michael, Umberto Morra di Cella, Francisco Navarro, Hofiz Navruzshoev, Anton Neureiter, Gennady Nosenko, Massimo Pecci, Mauri Pelto, Victor Popovnin, Rainer Prinz, Carla Puigdomenech, Heather Purdie, Finnur Pálsson, Alberto Rossotto, Lucas Ruiz, Louis Sass, Erik Schytt Mannerfelt, Riccardo Scotti, Donghui Shangguan, Brenda Shepherd, Delphine Six, Andrey Smirnov, Ireneusz Sobota, Markus Strudl, Shin Sugiyama, Emmanuel Thibert, Laura Thomson, Thorsteinn Thorsteinsson, Levan Tielidze, Florian Tolle, Pavel Toropov, Paolo Tuccella, Gulomjon Umirzakov, Ryskul Usubaliev, Lauren Vargo, Wei Yang, Bernhard Zagel
2026, Nature Reviews Earth and Environment (7) 213-215
Glaciers lost 408 ± 132 Gt of mass during the hydrological year 2025, equivalent to 1.1 ± 0.4 mm sea-level rise. Since 1975, glacier mass loss has totalled 9,583 ± 1,211 Gt, equivalent to 26.4 ± 3.3 mm of sea-level rise, with six of the highest mass-loss years on record...
Long-term monotonic trends in water budget components in the contiguous United States: Insights from two hydrologic models
Phillip J. Goodling, Sydney Foks, Jessica Ayers
2026, Journal of the American Water Resources Association (62)
Characterizing changes to water availability for domestic, industrial, agricultural, and other uses is essential to support water management. To better quantify these changes, the U.S. Geological Survey and National Science Foundation National Center for Atmospheric Research produced two hydrologic models simulating water budget components from 1980 to 2021 over the...
Distribution and abundance of Least Bell’s Vireo (Vireo bellii pusillus) and Southwestern Willow Flycatcher (Empidonax traillii extimus) at the Hansen Dam Basin, Los Angeles County, California—2025 data summary
Suellen Lynn, Barbara E. Kus
2026, Data Report 1222
Executive Summary We surveyed for Least Bell’s Vireos (Vireo bellii pusillus; vireo) and Southwestern Willow Flycatchers (Empidonax traillii extimus; flycatcher) along Big Tujunga Creek in the Hansen Dam Basin in Los Angeles County, California, in 2025. Four vireo surveys were completed between April 17 and July 2, 2025, and three flycatcher...
Deep groundwater total dissolved solids mapping in the Dakota Group, Williston Basin, USA
Michael J. Stephens, Bennett Eugene Hoogenboom, Lyndsay B. Ball, Will Chang
2026, Groundwater
Growing concern about the quantity of available freshwater around the world has led to interest in surveying groundwater total dissolved solids (TDS) below water well depths. Deep TDS has not been systematically mapped, and there is much to learn about the distribution and controls on deeper groundwater. In sedimentary basins...
Sampling and analysis plan for the water-quality monitoring program in Lake Koocanusa and upper Kootenai River, Montana, water years 2022–23
Lindsey R. King, Sara L. Caldwell Eldridge, Melissa A. Schaar, Travis S. Schmidt, Thomas Chapin, Ashley M. Bussell
2026, Open-File Report 2026-1005
The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency, collected water-quality samples and environmental data in Lake Koocanusa (also known as “Koocanusa Reservoir”), the Kootenai River, and the Tobacco River during water years 2022–23. The transboundary Lake Koocanusa is in southeastern British Columbia, Canada, and northwestern Montana,...
Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 3 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts
Page C. Valentine, VeeAnn A. Cross
2026, Scientific Investigations Map 3544
The U.S. Geological Survey, in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area being mapped using geophysical and geological data includes the SBNMS and...
Methods for estimating daily upstream location of the freshwater- saltwater interface along the Maurice and Cohansey Rivers, New Jersey
Jennifer L. Closson, Thomas P. Suro, Lukasz M. Niemoczynski
2026, Scientific Investigations Report 2025-5090
The Delaware River basin (DRB) provides drinking water to 15 million people in the surrounding area. Water is frequently withdrawn from the freshwater reaches of streams, above head of tide, in the DRB for use as public drinking water. During extended periods of low flow, saltwater can move upstream, which...
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...
Geologic map of the Emmons Lake volcanic center, Alaska
Thomas P. Miller, Christopher F. Waythomas, Margaret T. Mangan, Frank A. Trusdell, Andrew T. Calvert
2026, Scientific Investigations Map 3519
Introduction The Emmons Lake volcanic center is a spatially clustered group of stratovolcanoes and calderas in the southwestern part of the Alaska Peninsula, Alaska. The volcanic center is characterized by several ice- and snow-clad stratovolcanoes located within and along the margins of a nested-caldera complex that includes Emmons Lake. A shieldlike...
Geochemical disequilibrium at the brittle-ductile transition
Raphael Gottardi, Ryan J. McAleer, Gabriele Casale, Martin Wong
2026, Geochemistry, Geophysics, Geosystems (27)
We investigate the microtextural, microchemical, and isotopic effects of late-stage ductile deformation in quartzite mylonites and kyanite–muscovite–quartz veins from the Raft River shear zone (Utah). Quartz microstructures record pervasive disequilibrium, expressed by unannealed features including undulatory extinction, deformation lamellae, and poorly defined fabrics, typical of waning deformation in shear zones....
