Chapter three - Global SSEBop actual evapotranspiration modeling and mapping using the VIIRS data
Gabriel B. Senay, Stefanie Kagone, Kul Bikram Khand, Gabriel Edwin Lee Parrish, Claudia Young, Michael Budde
2025, Book chapter, Evapotranspiration in agro-ecosystems and forestry
AActual evapotranspiration (ETa) is an essential climate variable that can be used for drought monitoring and water availability assessment because of its close connection with vegetation, soil moisture, and the water cycle. An operational ETa using the Visible Infrared Imaging Radiometer Suite (VIIRS) and global weather datasets was developed through...
Identifying conditions associated with outliers produced by three different chlorophyll fluorometers: A comparison of instrumentation and development of correction formulae
Emily T. Richardson, Tamara E. C. Kraus, Crystal Lee Sturgeon, Katy O’Donnell, Brian A. Bergamaschi
2025, Limnology & Oceanography: Methods (23) 673-687
Measurements of chlorophyll concentration reported by fluorometers (fChl) are used in environmental research and monitoring, as inputs to models, and in the interpretation of remote sensing data. Researchers and managers benefit from understanding how to interpret and ensure the accuracy of fChl data collected by in situ fluorometers. Although fChl...
Determination of per- and polyfluoroalkyl substances in water by direct injection of matrix-modified centrifuge supernatant and liquid chromatography/tandem mass spectrometry with isotope dilution
James L. Gray, Leslie K. Kanagy, Christopher J. Kanagy, Cyrissa A. Anderson
2025, Techniques and Methods 5-B13
A direct-injection liquid chromatography/tandem mass spectrometry method was developed to determine 34 per- and polyfluoroalkyl substances (PFAS), including selected branched isomers, in centrifuge supernatant of matrix-modified (amended with approximately 50 percent methanol) water samples. The method has been validated in reagent water, surface water, groundwater, and wastewater effluent. Other water...
The 3D Elevation Program—Supporting Louisiana's economy
Chris Cretini
2025, Fact Sheet 2025-3034
Introduction Recent and ongoing collections of high-resolution elevation data in Louisiana are providing information that supports improved critical public safety modeling and enables the State to strengthen its efforts to fight the effects of land subsidence and sea-level rise. The availability of current and accurate three-dimensional (3D) elevation data supports numerous...
Principles of riverscape health
Hayley Corrine Glassic, Robert Al-Chokhachy, Joseph Wheaton, William W. Macfarlane, Christopher Jordan, Brian M. Murphy, Scott Shahverdian, Stephen Bennett, Nicolaas Bouwes, Kirstie Fryirs, Gary Brierley, Damion Ciotti, Philip Bailey, Karen Bartlet, Barbara Belletti, Simone Bizzi, James Brasington, Reid Camp, Emily Fairfax, Jordan Gilbert, Justin Jimenez, Jeremy D Maestas, Timmie Mandish, Amy McNamara, Scott R Miller, Baptiste Marizot, Mathias Perle, Herve Piegay, Helen Reid, Lindsay V. Reynolds, William Saunders, Alden Shallcross, Peter Skidmore, Rose Smith, Benoît Terrier, Gus Wathen, Nick Weber
2025, WIREsWATER (Wiley Interdisciplinary Reviews Primer) (12)
Riverscapes are the integration of terrestrial and aquatic systems from headwaters to estuaries that provide habitat and ecosystem benefits when in good health. However, current riverscape degradation is pervasive, impairing the function and resulting benefits of these systems. Healthy riverscapes are adaptive and some can ‘heal’ after disturbance with minimal...
2022 McKinney rain-on-wildfire event, dissolved oxygen sags, and a fish kill on the Klamath River, California
Jennifer Curtis, Grant Johnson, Josh Cahill, Laurel Genzoli, Clifford Dahm, Liam N. Schenk, John Oberholzer
2025, Scientific Reports (15)
The longitudinal propagation of water-quality and ecological impairments in rivers during and after wildfires remain poorly understood. In Northern California, the 2022 McKinney Fire burned 243 km2 of the Klamath National Forest, with 83% of the burned area classified as moderate to high severity. During the active wildfire, a high-intensity monsoonal...
Spatial and temporal variability of perfluoroalkyl and polyfluoroalkyl substances in major rivers of New Mexico, USA
Kimberly R. Beisner
2025, Water Environment Research (97)
Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are ubiquitous in the environment, but sources that contribute to temporal and spatial variability in surface waters are not well defined. Many states are assessing PFAS in water resources, and insight from these statewide assessments can help guide future sampling efforts. A statewide assessment of...
Preparation and analysis methods for fish tissue collected from Lake Koocanusa, Montana
Travis S. Schmidt, Ashley Morgan Bussell, Molly A. Moloney, James L. Dunnigan, Trevor M. Selch, Jessica E. Brandt, Craig A. Stricker, A. Robin Stewart, Veronika A. Kocen, Danielle M. Cleveland, Vicki S. Blazer, Sarah E. Janssen, Jacob M. Ogorek, Meghan Dunn, Theresa L. McBride, Katie B. Adams, Benjamin P. Colman, Matt Young, Jennie Christensen
2025, Open-File Report 2025-1034
Lake Koocanusa, a reservoir, receives mine wastes from metallurgical coal mines in the Elk River Valley of British Columbia, Canada. Selenium and other elements discharged by the mines into the waters of the United States can pose unknown risks to aquatic life. The U.S. Geological Survey Wyoming-Montana Water Science Center...
Wake Atoll vessel movement biosecurity program efficacy
Stacie A. Hathaway, James C. Molden, Robert Peck, Kristen R. Rex, Cheryl S. Brehme, Theo Black, Robert N. Fisher
2025, Open-File Report 2025-1026
Executive SummaryThe purpose of this Wake Atoll Vessel Movement Biosecurity Program Efficacy document is to provide the United States Air Force (USAF) with an unbiased review of the current (2015; hereafter referred to as the 2015 Biosecurity Plan) biosecurity plan for the military base Wake Island Airfield (WIA) on Wake...
Revealing organofluorine contamination in effluents and surface waters with complementary analytical approaches: Fluorine-19 nuclear magnetic resonance spectroscopy (19F-NMR) and liquid chromatography-tandem mass spectrometry (LC-MS/MS)
K.A. Faber, W.C.K Pomerantz, James L. Gray, Laura E. Hubbard, Dana W. Kolpin, W.A. Arnold
2025, Environmental Science & Technology (59) 14695-14706
Fluorinated organic contaminants, including per- and polyfluoroalkyl substances (PFASs) and fluorinated pesticides and pharmaceuticals (FPPs), pose a persistent threat to environmental health. Widely used liquid chromatography-tandem mass spectrometry (LC-MS/MS) methods fail to capture large fractions of total organofluorine in environmental samples, confounding the assessment of fluorinated contamination. Fluorine-19 nuclear magnetic...
U.S. Geological Survey Groundwater Climate Response Network, 2024
Jason M. Fine, Rodney R. Caldwell
2025, General Information Product 254
As of October 2024, the U.S. Geological Survey (USGS) operated 588 sites across the United States and its territories as part of the Groundwater Climate Response Network (CRN). The CRN is comprised of wells selected to monitor the effects of climate variability, such as droughts, on groundwater levels nationwide. The...
The structural and functional impacts of invasive Psidium cattleianum in forests on the Island of Hawai’i
Tara Seely, Lucas Fortini, Yutong Liang, John J. Battles
2025, Ecosystems (28)
During the past century, the proliferation of invasive species has contributed to loss of biodiversity and ecosystem degradation. In forests, invasive tree species can alter ecosystem function, but the underlying mechanisms of these changes are not fully understood. We use the ongoing invasion of P. cattleianum on the Island of Hawai’i to...
Chlorophyll trends are negative for lakes but positive for estuarine–coastal waters
James E. Cloern, Alan Jassby
2025, PNAS (122)
Nutrient (nitrogen and phosphorus) pollution is an environmental problem of global concern because overenrichment of water bodies increases phytoplankton biomass and ecosystem metabolism, depletes oxygen in bottom waters, and increases the frequency and intensity of harmful algal blooms. These responses to nutrient pollution have motivated policies to reduce anthropogenic nutrient...
Soil moisture partitioning between under canopy and interspace environments in shrublands of the northern Chihuahuan Desert
Juan Pinos, Keegan Hammond, Michael C. Duniway, John P. Anderson, Niall P. Hanan, Matthew D. Petrie
2025, Ecosystems (28)
Soil moisture is a key link between hydrologic and ecologic processes in desert shrublands. Understanding how soil moisture is spatially distributed in desert shrublands provides valuable insights into how shrubs use and impact limiting water resources, and how shrublands may respond to future meteorological and climate change. Our goals were...
Comparison of Microcystin-LR degradation by UV222 and UV254
Zanna J. Leciejewski, Zachary R. Laughrey, Amanda L. Stickney, Keith A. Loftin, Natalie M. Hull
2025, Environmental Science and Technology (59) 14660-14671
Microcystin-LR (MC-LR), a toxin produced during some cyanobacterial harmful algal blooms (cyanoHABs), can harm ecosystems and require consideration in water treatment. Ultraviolet (UV)-C treatment has the potential to degrade cyanotoxins with less harmful byproducts than other treatments. This study compares MC-LR degradation in three different water types using UV-C light...
Land application of drill waste: A scope analysis
Matthew S. Varonka, Melissa A. Lombard, Todd M. Preston, Timothy T. Bartos, Jason R. Masoner, Isabelle M. Cozzarelli
2025, Journal of the Air & Waste Management Association (75) 656-669
Drilling fluid waste land application, a process where drilling wastes are spread and tilled into the land surface, has become common in some petroleum-producing states, however, the potential benefits and risks of this practice are not well studied. Drilling fluids can be water- or oil-based and can have high concentrations...
Precipitation pulse dynamics are not ubiquitous: A global meta-analysis of plant and ecosystem carbon- and water-related pulse responses
Emma Reich, Jessica Guo, Drew Peltier, Emily C. Palmquist, Kimberly Samuels-Crow, Rohan Boone, Kiona Ogle
2025, Global Change Biology (31)
Ecosystem responses to precipitation pulses (“pulse responses”) exert a large control over global carbon, water, and energy cycles. However, it is unclear how the timing and magnitude of pulse responses will vary across ecosystems as precipitation regimes shift under accelerating climate change. To address this issue, this study evaluates how...
Relating surface water dynamics in wetlands and lakes to spatial variability in hydrologic signatures
Melanie K. Vanderhoof, Peter Nieuwlandt, Heather E. Golden, Charles R. Lane, Jay Christensen, William Keenan, Wayana Dolan
2025, Wetland Ecology & Management (33)
The retention of surface water in wetlands and lakes can modify the timing, duration, and magnitude of river discharge. However, efforts to characterize the influence of surface water on discharge regimes have been generally limited to small, wetland-dense watersheds. We developed random forest models to explain spatial variability in six...
The systematics of stable hydrogen (δ2H) and oxygen (δ18O) isotopes and tritium (3H) in the hydrothermal system of the Yellowstone Plateau volcanic field, USA
Shaul Hurwitz, R. Blaine McCleskey, Bryant Jurgens, Jacob B. Lowenstern, Laura E. Clor, Andrew Hunt
2025, Geochemistry, Geophysics, Geosystems (26)
To improve our understanding of hydrothermal activity on the Yellowstone Plateau volcanic field, we collected and analyzed a large data set of δ2H, δ18O, and the 3H concentrations of circum-neutral and alkaline waters. We find that (a) hot springs are fed by recharge throughout the volcanic plateau, likely focused through fractured,...
Assessment of water chemistry of the Coconino aquifer in northeastern Arizona
Casey J.R. Jones
2025, Scientific Investigations Report 2025-5038
The Coconino aquifer was investigated as a potential groundwater resource for the Hopi Tribe and Navajo Nation in northeastern Arizona. Basic groundwater chemistry, including major ions, total dissolved solids, and selected trace metal concentrations, are presented and analyzed to characterize the Coconino aquifer. The geochemical compositions of groundwater are associated...
Integrating contaminant source indicators, water quality measures, and ecotoxicity to characterize contaminant mixtures and per- and polyfluoroalkyl substances (PFAS) variability in an urban watershed
J. R. Behrens, A.S. Joyce, P.L. Ferguson, Dana W. Kolpin, N. Jayasundara, N. Barbo, E.S. Bernhardt
2025, Environmental Science & Technology (59) 13958-13969
Thousands of chemical contaminants threaten watersheds but are time and cost prohibitive to monitor. Identifying their sources, transport, and ecological risk is limited in heterogeneous urban watersheds. We present an integrative watershed approach using source-specific indicator compounds, common water quality measures, and ecotoxicity assays to examine the distribution of contaminant...
Completion summary for monitor wells NRF-17 and NRF-18 at the Naval Reactors Facility, Idaho National Laboratory, Idaho
Brian V. Twining, Kerri C. Treinen, Jeffrey A. Zingre
2025, Scientific Investigations Report 2025-5049
The U.S. Geological Survey (USGS)—in cooperation with the U.S. Department of Energy (DOE) for the Naval Reactors Laboratory Field Office that supports operations for the Naval Reactors Facility (NRF) located at the Idaho National Laboratory (INL)—drilled and constructed well NRF-17 (formerly borehole USGS 151) and well NRF-18 (formerly borehole USGS...
The U.S. Geological Survey National Streamgage Network, 2024
Brian E. McCallum, Melissa L. Riskin
2025, General Information Product 252
The U.S. Geological Survey (USGS) operated 12,165 continuous surface-water monitoring locations (streamgages) across the United States in 2024. The streamgages provide information on river height and streamflow, typically at 15-minute intervals. This information is then made available to everyone, most of it delivered nearly in realtime on the USGS National...
2024 Surprise Inlet landslides: Insights from a prototype landslide‐triggered tsunami monitoring system in Prince William Sound, Alaska
Ezgi Karasozen, Michael E. West, Katherine R. Barnhart, John J. Lyons, Terry Nichols, Lauren N. Schaefer, Bohyun Bahng, Summer Ohlendorf, Dennis M. Staley, Gabriel J. Wolken
2025, Geophysical Research Letters (52)
Alaska's coastal communities face growing landslide hazards owing to glacier retreat and extreme weather intensified by the warming climate, yet hazard monitoring remains challenging. As part of ongoing experimental monitoring in Prince William Sound, we detected three large landslides (0.5–2.3 M m3) at Surprise Inlet on 20 September 2024, within the span...
Hydraulic conductivity and transmissivity estimates from slug tests in wells within the Mississippi Alluvial Plain, Arkansas and Mississippi, 2020
Aaron L. Pugh
2025, Scientific Investigations Report 2023-5101
During the spring and summer of 2020, the U.S. Geological Survey conducted single-well slug tests on selected observation wells within the Mississippi Alluvial Plain in Arkansas and Mississippi to estimate hydraulic conductivity and transmissivity values for the Mississippi River Valley alluvial and middle Claiborne aquifers. Well and aquifer data were...
