Water-resources inventory and assessment at Katahdin Woods and Waters National Monument
Amanda L. Tudor
2025, Scientific Investigations Report 2025-5070
The U.S. Geological Survey, in cooperation with the National Park Service, prepared a water-resources inventory and assessment for Katahdin Woods and Waters National Monument (KAWW). This compilation includes published and publicly accessible hydrologic data and resource assessments of streams, rivers, ponds, lakes, wetlands, vernal pools, and groundwater in and near...
U.S. Geological Survey streamgage network in the Upper Colorado River Basin—Recording the hydrologic history of the Western United States
Brandon T. Forbes, Cheryl A. Eddy-Miller, Ryan C. Rowland, Olivia A. Drukker, Jeffrey Cordova
2025, Fact Sheet 2025-3039
IntroductionWater supply in the Western United States is an essential resource, and the collection of accurate and timely water information is fundamental to effectively managing water resources in the region. Efforts to document the hydrology in the Colorado River Basin are vital to life in the Western United States. These...
Hydrogeology of unconsolidated and bedrock aquifers along the Salmon River, including Malone, Franklin County, New York
Shannon R. Fisher, John G. Van Hoesen, Paul M. Heisig, Joshua Woda
2025, Scientific Investigations Report 2025-5048
The U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation, investigated the hydrogeology of the unconsolidated and bedrock aquifers along the Salmon River corridor in northern Franklin County, New York. The study area covers roughly 147 square miles and includes the village of Malone and...
Density dependence and weather drive dabbling duck spatiotemporal distributions and intercontinental migration
Ben D. Golas, Diann J. Prosser, Andrew M. Ramey, Paul K. Link, Wayne E. Thogmartin
2025, Avian Research (16)
Understanding migratory waterfowl spatiotemporal distributions is important because, in addition to their economic and cultural value, wild waterfowl can be infectious reservoirs of highly pathogenic avian influenza virus (HPAIV). Waterfowl migration has been implicated in regional and intercontinental HPAIV dispersal,...
The influence of mountain streamflow on nearshore ecosystem metabolism in a large, oligotrophic lake across a drought and a wet year
Kelly Loria, Heili Lowman, Jasimine Krause, Leon R. Katona, Ramon C. Naranjo, Facundo Scordo, Adrian A. Harpold, Sudeep Chandra, Joanna Blaszczak
2025, Limnology and Oceanography (70) 2645-2659
The influence of streamflow can be highly heterogeneous around lake edges, making it challenging to predict how benthic productivity in the littoral zone responds to hydroclimatic change. The degree to which streamflow affects nearshore productivity varies as a function of catchment characteristics, internal lake morphometry, and processes. This study investigates...
Warming Alaskan rivers affect first-year growth in critical northern food fishes
Peyton Thomas, Dylan Blaskey, Yifan Cheng, Michael P. Carey, Heidi K. Swanson, Andrew J. Newman, Cassandra M. Brooks, Nicole M. Herman-Mercer, Keith N. Musselman
2025, Scientific Reports (15)
Arctic and subarctic rivers are warming rapidly, with unknown consequences for migratory fishes and the human communities dependent on them. To date, few studies have provided a comprehensive assessment of possible climate change impacts on the hydrology and temperature of Arctic rivers at the regional scale, and even fewer have...
Wetlands, groundwater and seasonality influence the spatial distribution of stream chemistry in a low-relief catchment
Caroline R. Weidner, Jay P. Zarnestke, Anthony D. Kendall, Sherry Lynn Martin, Samuel Nesheim, Arial J. Shogren
2025, JGR Biogeosciences (130)
Evaluating stream water chemistry patterns provides insight into catchment ecosystem and hydrologic processes. Spatially distributed patterns and controls of stream solutes are well-established for high-relief catchments where solute flow paths align with surface topography. However, the controls on solute patterns are poorly constrained for low-relief catchments where hydrogeologic heterogeneities and...
Hydrophone placement yields high variability in detection of Epinephelus striatus calls at a spawning site.
Cameron J. Van Horn, Alli C. Candelmo, Scott A. Heppell, Croy R.M. McCoy, Christine V. Pattengill-Semmens, Lynn Waterhouse, Laurent M. Cherubin, J. Christopher Taylor, William Michaels, James Locascio, Ali K. Ibrahim, Brice X. Semmens
2025, Ecological Applications (35)
Passive acoustic monitoring is a cost-effective, minimally invasive technology commonly used to study behavior and population dynamics of soniferous fish species. To understand the strengths and limitations of acoustic monitoring for this purpose at fish spawning aggregations (FSA) requires an assessment of the variability in aggregation-associated sounds (AAS) as a...
Impacts of flowering rush (Butomus umbellatus L.) on macrophyte diversity and composition in the Upper Mississippi River
Alicia Carhart, Danelle M. Larson, Jennifer Froehly, Eric Lund, Stephanie Szura, Seth Fopma
2025, Biological Invasions (27)
Flowering rush (Butomus umbellatus L.), a perennial plant native to Eurasia, made a widespread appearance in the Upper Mississippi River in the United States in 2020, following extremely high river discharge during the previous year. Flowering rush expanded rapidly and was found at 1–10% of sites (n = 6,630 total sites) across a...
Applying U.S. Geological Survey science to understand effects to water supply in the Upper Colorado River Basin
Natalie K. Day, Cory A. Williams
2025, Fact Sheet 2025-3036
IntroductionThe Colorado River Basin is a vital source of water to more than 40 million people in the Western United States and Mexico, including in major cities like Denver, Las Vegas, Phoenix, Tucson, Los Angeles, and San Diego, and supports irrigation for about 16,000 square kilometers of agricultural land. Since...
Launching into societal benefits from the Surface Water and Ocean Topography (SWOT) mission
Margaret Srinivasan, Vardis Tsontos, Matthew Bonnema, Santiago Pena-Luque, Alexandre de Amorim-Teixiera, Alexandre Abdalla Araujo, Edward Beighley, Charon Birkett, Curtis Chen, Louise Croneborg-Jones, Cedric David, Shailen Desai, Alain Dib, Bradley Doorn, Robert W. Dudley, Bareerah Fatima, Luciana Fenoglio, Renato Prata de Moraes Frasson, Chandana Gangodagamage, Stephanie Granger, Isabel Houghton, Gregg Jacobs, Indu Jayaluxmi, Pierre-Yves Le Traon, Cassandra Nickles, Nicolas Picot, Guy Schumann, Babette Tchonang, Paula Torre Zaffaroni, Peter Van Oevelen, Jinbo Wang, Jerry Wegiel
2025, Water Resources Research (61)
The 10th Surface Water and Ocean Topography (SWOT) Applications Meeting, held one year after the satellite's launch, highlighted significant milestones in mission progress and showcased the innovative work of SWOT Early Adopters (EA) using mission data products. Over 100 participants from diverse sectors convened to discuss operational applications leveraging SWOT's...
Contributions of Great Salt Lake playa- and industrially-sourced priority pollutant metals in dust contribute to possible health hazards in the communities of northern Utah
Annie L. Putman, Molly A. Blakowski, Destry N. DiViesti, Diego P. Fernandez, Morgan C. McDonnell, Patrick C. Longley, Daniel K. Jones
2025, GeoHealth (9)
Communities and ecosystems of northern Utah, USA receive particulate pollution from anthropogenic activity and dust emissions from sources including the Great Salt Lake (“the Lake”) playa. In addition to affecting communities, anthropogenic pollution is delivered to the Lake's playa sediments, which are eroded during dust events. Yet, spatial variability in...
High resolution mapping of submerged sediment size and suitable salmon spawning habitat using topo-bathymetric Lidar in the Santiam Basin, Oregon
James White, Karen Michelle Bartelt, Brandon Overstreet, Jacob Ryan Kelley
2025, Water Resources Research (61)
The distribution of river-bed grain sizes plays a foundational role in river morphology and ecology. River-bed grain size is a key driver of channel form and process, and has first order effects on aquatic macroinvertebrate assemblages, fish nesting, and biogeochemical processes. Despite this importance, tools to spatially quantify grain-size distributions,...
The U.S. Geological Survey National Water Quality Network—Groundwater, 2024
Bruce D. Lindsey, James A. Kingsbury, Leah Marissa Santangelo
2025, General Information Product 256
The U.S. Geological Survey (USGS) operates a National Water Quality Network (NWQN) to monitor trends in groundwater quality and assess emerging contaminants of concern. It is a “network of networks” with 81 subnetworks being sampled on a decadal time scale. Each year, 8 of the subnetworks are sampled. Subnetworks have...
Vibrio pectenicida strain FHCF-3 is a causative agent of sea star wasting disease
Melanie B. Prentice, Grace Crandall, Amy M. Chan, Katherine M. Davis, Paul Hershberger, Jan F. Finke, Jason Hodin, Andrew McCracken, Colleen T. Kellogg, Rute Carvalho, Carolyn Prentice, Kevin X. Zhong, Drew Harvell, Curtis A. Suttle, Alyssa-Lois M. Gehman
2025, Nature Ecology & Evolution (9) 1739-1751
More than 10 years following the onset of the sea star wasting disease (SSWD) epidemic, affecting over 20 asteroid species from Mexico to Alaska, the causative agent has been elusive. SSWD killed billions of the most susceptible species, sunflower sea stars (Pycnopodia helianthoides), initiating a trophic cascade involving unchecked urchin population...
Shrinking channels, growing threats: Habitat degradation from channel narrowing and invasive vegetation in three dryland rivers
Benjamin J. Miller, Mark C. McKinstry, Peter R. Wilcock, William W. Macfarlane, Steven Bassett, Phaedra E. Budy, Casey A. Pennock
2025, Journal of Environmental Management (392)
Water development and the proliferation of invasive riparian vegetation have led to widespread habitat loss and simplification of rivers in the western United States, contributing to the imperilment of native fishes. Here, we quantify channel narrowing and vegetation encroachment, which are conspicuous indicators of riverine habitat alteration,...
Analysis of summer water temperatures of the lower Virgin River near Mesquite, Nevada, 2019–21
Katherine J. Earp
2025, Scientific Investigations Report 2025-5065
The lower Virgin River is a sandy, shallow reach of the Virgin River that flows from northern Arizona to Lake Mead in Nevada. The Virgin River hosts several native fish species, including two endangered fish, woundfin (Plagopterus argentissimu) and Virgin River chub (Gila seminuda). All native fish species in the...
Lake water storage and level
Merritt Elizabeth Harlan, Michael Frederick Meyer, Eric S. Levenson, Sarah Cooley, Benjamin M. Kraemer
2025, Book chapter, State of the climate in 2024: Global climate
No abstract available....
Random forest regression models for estimating low-streamflow statistics at ungaged locations in New York, excluding Long Island
Timothy J. Stagnitta, Joshua Woda, Alexander P. Graziano
2025, Scientific Investigations Report 2025-5060
This report is currently being updated with re‑calibrated random‑forest models for StreamStats implementation. The basin‑characteristic inputs were modified to align with StreamStats requirements.AbstractModels to estimate low-streamflow statistics at ungaged locations in New York, excluding Long Island and including hydrologically connected basins from bordering States, were developed for the first time...
Evaluating trends using total impervious cover as a metric for degree of urbanisation
Laura Toran, Daniel Bain, Kristina G. Hopkins, Joel Moore, Emily May O'Donnell
2025, Hydrological Processes (39)
Impervious cover (IC) is a common metric for assessing the degree of urbanisation in watersheds. However, there are different methods for determining IC, and use of IC correlation with urban watershed response to hydrologic and geochemical inputs can be strongly influenced by the end members (IC below 10% and above...
Decision-support modeling and research priorities for establishing baseline conditions for outstandingly remarkable values, Obed Wild and Scenic River, Tennessee
Elena R. Crowley-Ornelas, Rebecca Schapansky, Tom Blount, Niki S. Nicholas
2025, Open-File Report 2025-1035
The Obed River is the last undammed river in Tennessee. The Obed Wild and Scenic River is managed by the National Park Service and covers a protected area of the Obed River headwaters (including four contributing tributaries). The Obed Wild and Scenic River supports a unique ecosystem with eight federally...
Hydrologic budgets and water availability of six bedrock aquifers in the Black Hills area, South Dakota and Wyoming, 1931–2022
Colton J. Medler, Todd M. Anderson, William G. Eldridge
2025, Scientific Investigations Report 2025-5067
Population growth and recurring droughts in the Black Hills region raised interest in water resources and future availability. The Black Hills hydrology study (BHHS) was initiated in the early 1990s to address questions regarding water resources. Since completion of the BHHS in the early 2000s, the population of the Black...
Hydroclimatic and land-use factors affecting peak streamflow in Illinois, Iowa, Michigan, Minnesota, Missouri, Montana, North Dakota, South Dakota, and Wisconsin
Karen R. Ryberg, Mackenzie K. Marti, Nancy A. Barth, Thomas M. Over, Sara B. Levin, Hannah Lee Podzorski, Steven K. Sando, Tara Williams-Sether, Padraic S. O’Shea, Katherine J. Chase
2025, Circular 1557
Flood-frequency analysis provides the basis for flood risk estimates used by water-resource managers in land-use planning, and it informs the design of essential infrastructure such as bridges and culverts. Federal guidelines for flood-frequency analysis do not offer guidance on addressing changing climate and land-use conditions when estimating floods. However, failing...
Stable isotope reference materials and scale definitions – Outcomes of the 2024 IAEA experts meeting
Federica Camin, Dinka Besic, Paul J. Brewer, Colin E Allison, Tyler B. Coplen, Philip J.H. Dunn, Matthias Gehre, Manfred Gröning, Harro A.J. Meijer, Jean-François Hélie, Paola Iacumin, Rebecca Kraft, Bor Krajnc, Steffen Kümmel, Sangil Lee, Juris Meija, Zoltan Mester, Joachim Mohn, Heiko Moossen, Haiping Qi, Grzegorz Skrzypek, Peter Sperlich, Joelle Viallon, Leonard I. Wassenaar, Robert I. Wielgosz
2025, Rapid Communications in Mass Spectrometry (39)
The participants of the 12th International Atomic Energy Agency (IAEA) meeting on stable isotope reference materials reached a consensus, acknowledging the existence and use of two carbon isotope delta scales: the VPDB (Vienna Peedee belemnite) scale and the VPDB-LSVEC (LSVEC - lithium carbonate prepared by H. J. Svec). Conversion models between...
Land-based nutrient flux to a fringing reef: Insights from Ofu Island, American Samoa
Nancy G. Prouty, Ferdinand K.J. Oberle, Olivia M. Cheriton, Lauren T. Toth, Eric K. Brown, Curt D. Storlazzi
2025, Frontiers in Marine Science (12)
Submarine groundwater discharge (SGD) is a critical driver of nutrient transport in coral reef ecosystems, shaping water quality, primary productivity, and overall reef health. This study quantifies SGD fluxes and associated nutrient dynamics in two reef flat pools within the Ofu Unit of the National Park of American Samoa: Papaloloa...
