Peak-, mean-, and low-streamflow regional-regression equations for natural streamflow in central and western Colorado, 2019
Michael S. Kohn, M. Alisa Mast, Tara A. Gross
2026, Scientific Investigations Report 2025-5047
The U.S. Geological Survey (USGS), in cooperation with the Colorado Department of Transportation, developed peak-, mean-, and low-streamflow regional-regression equations for estimating various statistics for natural streamflow in hydrologic regions of central and western Colorado. The peak-streamflow regression equations were developed using data from 418 streamgages, consisting of 15,202 years...
Metallurgical coal—Deposits, production, resources, market dynamics, and supply chain risks
Brian N. Shaffer, Elisa Alonso, Michelle N. Johnston, Scott A. Kinney
2026, Fact Sheet 2026-3061
Plain Language SummaryMetallurgical coal (met coal; consumed to produce coke for steelmaking) must meet specific chemical and physical specifications. In 2023, the conterminous United States produced 66 million short tons (mst) of met coal, consumed 15.85 mst domestically, exported 51.1 mst, and imported 0.7 mst. Most met coal was produced...
Uranium—Deposits, production and resources, market dynamics, and supply chain risks
Mark J. Mihalasky
2026, Fact Sheet 2025-3057
IntroductionInterest in nuclear power for the generation of electricity has risen with the increase in the need for more diverse baseload power, enhanced energy security, and the development of new technologies, such as small modular reactors (SMRs), which could provide power for remote areas, industrial applications, and artificial intelligence...
Development of a two-stage lifecycle model to inform the trap-and-haul program for Oncorhynchus kisutch (coho salmon) in the Lewis River, Washington
John M. Plumb, Russell W. Perry
2026, Open-File Report 2026-1004
Restoration of salmon populations in the upper Lewis River Basin, Washington, depends on a trap-and-haul program owing to the Lewis River Hydroelectric Project (hereinafter referred to as “Project”) operated by PacifiCorp and Cowlitz Public Utilities District (hereinafter referred to as “Utilities”), which has been a barrier to salmon passage since...
Assessment of undiscovered shale-gas resources in the Grand Erg/Ahnet Basin Province of Algeria, 2026
Michael E. Brownfield, Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Cheryl A. Woodall, Thomas M. Finn, Phuong A. Le, Heidi M. Leathers-Miller, Janet K. Pitman, Ronald M. Drake II, Stephanie B. Gaswirth
2026, Fact Sheet 2026-3005
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 80.1 trillion cubic feet of shale gas in the Grand Erg/Ahnet Basin Province of Algeria....
Fish body midline segmentation using binary search
Robert M.H. Sterling, Elsa Marie-Catherine Goerig, M Buzdalov, Theodore Castro-Santos, O. Akanyeti
2026, Computers and Electronics in Agriculture (248)
Body and caudal fin locomotion is ubiquitous in aquatic vertebrates, and kinematic models describing it are used in robotics, biomechanics and fisheries research. This paper presents a new algorithm to translate continuous body midlines of fish into a series of interconnected segments by identifying favorable joint positions along the body....
Spatial heterogeneity of salt marsh vulnerability to sea-level rise: Dual controls of hydrological setting and salinity regime
Dongxiao Yin, Zafer Defne, Neil K. Ganju, John C. Warner, David K. Ralston, Courtney K. Harris, Bin Li
2026, Geophysical Research Letters (53)
Salt marsh vulnerability to sea-level rise (SLR) is typically assessed using point measurements of vertical accretion, neglecting three-dimensionality of geomorphic evolution and spatial variability. Recent studies suggest links between vertical and horizontal vulnerability, with differences between oligohaline and polyhaline marshes, yet these relationships remain untested in estuary-marsh systems. Here we...
Standardized method for logging drill core at the Idaho National Laboratory, Idaho
Haley M. Dietz
2026, Techniques and Methods 5-E1
The U.S. Geological Survey’s (USGS) Lithologic Core Storage Library (CSL) at the Idaho National Laboratory stores more than 120,000 feet of drill core that is accessible to the public for research and sampling. To effectively convey the physical and descriptive properties of the drill core, USGS staff at the Idaho...
Assessment of groundwater quantity and quality contributions to Lake Huron
Bridget B. Kaemming, Chanse M. Ford, Sherry L. Martin
2026, Scientific Investigations Report 2026-5136
Lake Huron, one of the five Great Lakes, borders the United States and Canada, with Michigan as the only U.S. State on its shoreline. Like other freshwater lakes, it faces water-quality challenges from nutrients and chemicals applied across its drainage basin. Although past studies focused on surface-water sources, groundwater contributions...
Annotated bibliography of scientific research on new world screwworm (Cochliomyia hominivorax) myiasis in wildlife
Sarah Timbie, Shelby Jo Weidenkopf, Daniel A. Grear
2026, Open-File Report 2026-1006
The New World screwworm (Cochliomyia hominivorax; NWS) is a parasitic blowfly that lays its eggs in open wounds of live, warm- blooded animals including livestock, wildlife, and potentially humans. The larvae consume living animal tissue, and if untreated, the infestation can lead to death. Although NWS was eradicated in the...
Quantitative mineral resource assessment of lithium pegmatite deposits in the northern Appalachian orogen, USA
Niki E. Wintzer, Christopher S. Holm-Denoma, Jacob Evan Poletti, Dalton M. McCaffrey, Stanley Paul Mordensky, Erik Roger Tharalson, Collin Cronkite-Ratcliff
2026, Natural Resources Research
Lithium demand is projected to increase more than 48 times by 2040 due to electric vehicle production and other energy storage needs. Most lithium production is outside of the USA, thereby increasing supply chain vulnerability. The combined end use importance and heightened supply risk of lithium make this lightest metallic...
The role of groundwater in contributing to surface water salinization in the Upper Colorado River Basin
Matthew P. Miller, Olivia L. Miller, Patrick C. Longley, Daniel R. Wise, Morgan C. McDonnell, Noah M. Schmadel, Jay R. Alder
2026, Geophysical Research Letters (53)
Freshwater salinization impacts the availability of water for human use and ecosystem needs worldwide. It has been estimated that total dissolved solids (TDS) in the Colorado River Basin cause $350 million/year in damages and substantial resources are devoted to reducing TDS loading to streams. This study describes the development and...
A Bayesian hierarchical modeling approach for species diversity in ecology
Song S. Qian, Mark Richard Dufour, Sabrina Jaffe, Corbin David Hilling, William D. Hintz
2026, Ecological Informatics (95)
Species diversity is the foundation of many ecological disciplines. This metric is often approximated using species richness and evenness, even though actual richness likely exceeds observations due to imperfect sampling methods. Estimating the “true” species richness, which includes identifying the number of missing species, has intrigued ecologists for decades. We...
Hydrogeology, groundwater salinity distributions, and assessment of the effect of oil-production activities on groundwater in the Midway Valley area, western Kern County, San Joaquin Valley, California
Janice M. Gillespie, Riley Gannon, Lyndsay B. Ball, John G. Warden, Rhett R. Everett, Michael J. Stephens
2026, PLOS Water (5)
This study seeks to determine the effects of oil field produced water disposal operations and well mechanical integrity issues on groundwater quality in oil fields in the southwest San Joaquin Valley, California. Whereas previous studies used groundwater wells to study shallow aquifers outside the oil fields, this study demonstrates that...
Water volumes, heat flow, and solute discharge from Old Faithful Geyser eruptions, Yellowstone National Park, USA
Shaul Hurwitz, R. Blaine McCleskey, Maxwell L. Rudolph, Sara Peek, David A. Roth, Melissa Schott-Atkins, Michael Manga, Kiernan F. Folz Donahue, Mara H. Reed, Jefferson D.G. Hungerford
2026, Journal of Volcanology and Geothermal Research (474)
The iconic Old Faithful Geyser in Yellowstone National Park, USA, has attracted a significant amount of research because of the relative regularity and impressive size of its eruptions. Numerous studies have included observations, measurements, and analyses that informed models of geyser eruptions. However, fundamental quantities, including the associated mass and...
Critical minerals in zinc ore—An update on Earth Mapping Resources Initiative Research in the Boulder Batholith region, Montana
Sean Patrick Gaynor, Eric D. Anderson, Kyle A. Eastman, Karen Lund, Chris Gammons, Heather A. Lowers, Jay M. Thompson
2026, Fact Sheet 2026-3064
...
Computation of regional groundwater budgets for the Virginia Coastal Plain aquifer system
Jason P. Pope, Alison D. Gordon, Ryan S. Frederiks
2026, Open-File Report 2026-1002
Computation of detailed groundwater flow budgets for subdivisions of the Virginia Coastal Plain aquifer system has enabled quantification and more thorough understanding of groundwater flow within this important water resource. A zone budget analysis based on previously published groundwater models of the Virginia Coastal Plain and Virginia Eastern Shore indicates...
Historical ice jams and associated environmental conditions on Osoyoos Lake
Nicholas A. Sutfin, Stephen J. Breen
2026, Scientific Investigations Report 2026-5003
Ice jams occur regularly at the southern outlet of Osoyoos Lake, which spans the border between the State of Washington and British Columbia, Canada. In recent winters, ice jams caused (1) decreases in downstream discharge that may adversely affect salmon spawning habitat and (2) short-duration lake-level rise that can interfere...
A roadmap for implementing the Emergency Recovery Plan for freshwater biodiversity
Steve J. Cooke, Abigail Lynch, David Tickner, Robin Abell, Morgan L. Piczak, Angela H. Arthington, Michele Thieme, Denielle M. Perry, J. Robert Britton, Tatenda Dalu, Kim Birnie-Gauvin, Steve J. Ormerod, Fernanda Ayaviri Matuk, Rajeev Raghavan, John P. Smol
2026, Environmental Reviews (34) 1-7
No abstract available....
Late Miocene Colorado River arrival in the Bidahochi basin supports spillover origin of Grand Canyon
John J.Y. He, Ryan S. Crow, John R. Douglass, Christopher S. Holm-Denoma, Jorge A. Vazquez, Brian F. Gootee, Marsha I Lidzbarski, Laura Pianowski, Harrison J. Gray, Emma Heitmann, Phil Pearthree, Kyle House, Shannon Dulin
2026, Science (395) 285-295
The timing and mechanism of the integration of the Colorado River and incision of the Grand Canyon remain among geology’s enduring controversies. A key question is the configuration of the upper Colorado River watershed between 11 and 6 million years ago. In this study, we present new evidence from zircon...
Characterizing changes in postfire debris-flow hazard as burned areas recover
Andrew Paul Graber, Matthew A. Thomas, Jason W. Kean, Jonathan Michael King, Jaime Kostelnik
2026, Geosphere
Emergency assessments of postfire debris-flow hazards that are performed by the U.S. Geological Survey (USGS) provide estimates of debris-flow likelihood and rainfall triggering conditions that are used for evaluating and managing runoff-generated debris-flow hazards in recently burned areas throughout the western United States. Although the immediate postfire period, within roughly...
Analyses of meteorological and hydrological records support Tribal members’ accounts of changing climate on the Fort Apache Reservation, east–central Arizona
Jon P. Mason
2026, Scientific Investigations Report 2026-5140
The Fort Apache Reservation in east–central Arizona, home to the White Mountain Apache Tribe of the Fort Apache Reservation, Arizona, contains several climate zones because of the large variation in surface elevation within the reservation. This study was carried out in cooperation with the White Mountain Apache Tribe of the...
Cenozoic distributed volcanism of the Arabia Plate—A review
Thomas W. Sisson, Andrew T. Calvert
2026, Professional Paper 1890-J
Cenozoic volcanic rocks of the Arabia Plate cover about 140,000 square kilometers across a distance of about 3,000 kilometers from southern Yemen to southeastern Turkey. The majority of volcanic products are alkali basalts that erupted in restricted areas, commonly over periods of a million or more years, building mafic lava...
The global proliferation of aquatic, benthic Microcoleus: Taxonomy, distribution, toxin production, ecology, and future directions
Laura T. Kelly, Daniel G Beach, Joanna R. Blaszczak, Keith Bouma-Gregson, Sydney M. Brown, Haowu Cheng, Janette L. Davidson, Jutta Fastner, Marcus Francis, Andrea Garcia Jimenez, Laurel Genzoli, Ramesh Goel, Diego Gonzalez, Kim M. Handley, Sabine Hilt, Jean-Francois Humbert, Rob Jamieson, Lindsay Johnston, Pilar Junier, Janice Lawrence, Pearse McCarron, Sven Meissner, Jacob Mormando, Jonathan Puddick, Catherine Quiblier, Nagasaijanani Rajpirathap, Charlotte Schampera, Andy Selwood, Karen Shearer, Abeer Sohrab, Rosalina Stancheva, Cecilio Valadez-Cano, Jordan M. Zebrecky, Susanna A. Wood
2026, Water Research (294)
There have been sporadic reports of aquatic, benthic Microcoleus proliferations in freshwater rivers, lakes, and reservoirs for four decades, with reports increasing in frequency over the last twenty years, suggesting a possible rise in their global distribution, frequency, and intensity. Microcoleus can produce anatoxins which are neurotoxic, and ingestion of toxic...
Mount Rainier volcanic hazard information
Holly F. Weiss-Racine, Joseph A. Bard, Jessica L. Ball, Carolyn L. Mastin
2026, General Information Product 265
Introduction Eruptions at Mount Rainier produce lava flows, plumes of airborne volcanic ash, and avalanches of hot rock, ash, and gas—pyroclastic flows—that rush down the steep, ice-covered slopes of the volcano. Hot rock and ash ejected during an eruption can melt large quantities of snow and ice, forming huge, fast moving...
