David A Roth (Former Employee)
Science and Products
Filter Total Items: 30
Characterization of three common land-applied wastes: Inorganic, organic, and microbial compositions of biosolid, livestock, and drilling fluid waste, United States, 2021 and 2022 Characterization of three common land-applied wastes: Inorganic, organic, and microbial compositions of biosolid, livestock, and drilling fluid waste, United States, 2021 and 2022
It is common practice for waste byproducts generated from the treatment of municipal waste (biosolids), livestock production (manure), and oil and gas drilling operations (spent drill fluids and cuttings) to be applied to farmland as a cost-effective means of disposal. From June 2021 to January 2022, 34 samples of land-applied waste materials were collected in 14 U.S. states. Samples...
Geochemical, mineralogical, and grain-size data for deep cores from the Cache Creek Settling Basin and streambed sediments from the Sacramento River watershed Geochemical, mineralogical, and grain-size data for deep cores from the Cache Creek Settling Basin and streambed sediments from the Sacramento River watershed
The Cache Creek Settling Basin (CCSB) is a 13.3 km2 levee-bounded sediment retention basin located at the modern terminus of Cache Creek near the eastern boundary of Yolo County, approximately two miles NE of Woodland, California. The Cache Creek Settling Basin was constructed in 1937 by the U.S. Army Corps of Engineers to trap suspended sediment from the upper Cache Creek watershed...
Chemical concentration results for assessment of mixed-organic/inorganic chemical exposures in the southeast United States, beginning 2022 Chemical concentration results for assessment of mixed-organic/inorganic chemical exposures in the southeast United States, beginning 2022
This data release contains the concentration and quality-assurance results for inorganic constituents, organic compounds (volatile organic compounds [VOC], per- and polyfluoroalkyl substances [PFAS], pesticides, and disinfection byproducts [DBP]) collected in tapwater from locations in Alabama and Mississippi. Tapwater samples (11 public supply and 1 private well) were collected on...
Biogeochemical Data from Field Samples and Laboratory Experiments, Boulder Creek Watershed, Colorado (2019-2023) Biogeochemical Data from Field Samples and Laboratory Experiments, Boulder Creek Watershed, Colorado (2019-2023)
Biogeochemical processes are key drivers of chemical solubility and mobilization. Understanding these processes will lead to improved predictive capabilities and may aid with watershed management decisions. This data release presents results from the Boulder Creek, Colorado watershed, including analyses of water and sediment. From April to August 2019, water samples were collected weekly...
Environmental Sampling and Modeling Results to Characterize Surface-Water Quality at 32 Sites Across the Potomac River Watershed, 2022 (ver. 3.0, April 2025) Environmental Sampling and Modeling Results to Characterize Surface-Water Quality at 32 Sites Across the Potomac River Watershed, 2022 (ver. 3.0, April 2025)
This data release presents chemical results from investigations of surface-water quality in the Potomac River watershed (encompassing Washington, D.C. and parts of West Virginia, Virginia, Pennsylvania, and Maryland) conducted during low-flow conditions in July through September of 2022 and modeling results that support interpretative products. Water-quality sampling: A sampling campaign...
Longitudinal assessment of per- and polyfluoroalkyl substances and co-occurring inorganic and organic contaminants in Neshaminy Creek, Pennsylvania, November 2021 Longitudinal assessment of per- and polyfluoroalkyl substances and co-occurring inorganic and organic contaminants in Neshaminy Creek, Pennsylvania, November 2021
Per- and polyfluoroalkyl substances (PFAS) and co-occurring inorganic and organic contaminants are widely distributed in the environment and understanding their surface water sources is critical for water resource management. In November 2021, 13 sites were sampled along a stream reach in the Neshaminy Creek basin in southeastern Pennsylvania utilizing a time of travel sampling approach...
Evaluation of preservation techniques for trace metals and major cations for surface waters collected from the U.S. Geological Survey's National Water Quality Network Sites Evaluation of preservation techniques for trace metals and major cations for surface waters collected from the U.S. Geological Survey's National Water Quality Network Sites
The USGS National Field Manual (NFM) states "A representative sample is one that typifies in time and space that part of the aqueous system to be studied" and "obtaining representative samples is of primary importance for a relevant description of the environment." The NFM contains detailed chapters on the best practices for representative and contamination free sampling of major and...
Specific conductance data collected during slug additions Specific conductance data collected during slug additions
Slug additions are often the most accurate method for determining discharge when traditional current meter or acoustic measurements are unreliable because of high turbulence, rocky streambed, shallow or sheet flow, or the stream is physically inaccessible (e.g., under ice or canyon walls) or unsafe to wade (Zellweger et al., 1989, Kilpatrick and Cobb 1984, Ferranti 2015). The slug...
Geochemical data for post-fire surface water, streambed sediment, and soils from areas affected by the 2018 Camp Fire, Butte County, California Geochemical data for post-fire surface water, streambed sediment, and soils from areas affected by the 2018 Camp Fire, Butte County, California
During November 2018, the Camp Fire burned more than 150,000 acres in Butte County, California. The fire was the deadliest and most destructive in California history, destroying more than 18,000 structures and causing at least 85 fatalities. The U.S. Geological Survey sampled surface water in areas affected by the Camp Fire, plus an unburned control site, during two post-fire sampling...
National scale assessment for rare earth elements in dissolved water samples and supporting geochemistry National scale assessment for rare earth elements in dissolved water samples and supporting geochemistry
This dataset is in support of the publication "The addition of 144Nd to routine ICP-MS analysis as a quick screening tool for approximating earth elements (Q-STAR) in natural waters". It contains inductively coupled plasma mass spectrometry (ICP-MS) data from samples analyzed at the National Water Quality Laboratory (NWQL) from April 2021-May 2022. Data listed include estimated neodymium...
Geochemical Analysis of Bulk Dust and Human Respiratory Cells and Fluids in Research on Deployment-related Lung Injury Geochemical Analysis of Bulk Dust and Human Respiratory Cells and Fluids in Research on Deployment-related Lung Injury
Multiple techniques including, x-ray diffraction, scanning electron microscopy, laser diffraction particle analysis, and inductively coupled plasma spectrometry, were used to characterize the morphology and composition of dust used for biological studies as well as lung tissue from rats, personnel deployed to Southwest Asia, and control samples. The data presented in this release are...
Target-chemical concentrations and microbiological results in surface water and tapwater, Montana, 2022 Target-chemical concentrations and microbiological results in surface water and tapwater, Montana, 2022
This data release contains the concentration and quality-assurance results for inorganic constituents, as well as organic compounds (volatile organic compounds [VOC], per- and polyfluoroalkyl substances [PFAS], pesticides and disinfection byproducts [DBP]) and microbiological results collected in the Little Big Horn River and residential or commercial tapwater locations in Montana...
Filter Total Items: 19
Stream discharge determinations using slug additions and specific conductance Stream discharge determinations using slug additions and specific conductance
Stream discharge is often determined by wading the stream and measuring the velocity at fixed widths and depths. However, there are conditions when wading measurements are not safe or the measurements are poor because of high turbulence, rocky streambeds, shallow or sheet flow, aquatic plants, or inaccessibility due to ice. Under these conditions, it is often preferable to determine...
Authors
R. Blaine McCleskey, Robert Runkel, Sheila Murphy, David Roth
Contaminant exposure and transport from three potential reuse waters within a single watershed Contaminant exposure and transport from three potential reuse waters within a single watershed
Global demand for safe and sustainable water supplies necessitates a better understanding of contaminant exposures in potential reuse waters. In this study, we compared exposures and load contributions to surface water from the discharge of three reuse waters (wastewater effluent, urban stormwater, and agricultural runoff). Results document substantial and varying organic-chemical...
Authors
Jason Masoner, Dana W. Kolpin, Isabelle Cozzarelli, Paul M. Bradley, Brian Arnall, Kenneth Forshay, James L. Gray, Justin Groves, Michelle Hladik, Laura Hubbard, Luke R. Iwanowicz, Jeanne Jaeschke, Rachael Lane, R. Blaine McCleskey, Bridgette Polite, David Roth, Michael Pettijohn, Michaelah Wilson
By
Water Resources Mission Area, Environmental Health Program, Central Plains Water Science Center, Eastern Ecological Science Center, Colorado Water Science Center, California Water Science Center, Central Midwest Water Science Center, Geology, Energy & Minerals Science Center, Kansas Water Science Center, Oklahoma-Texas Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Reston Biogeochemical Processes in Groundwater Laboratory
Bottled water contaminant exposures and potential human effects Bottled water contaminant exposures and potential human effects
Bottled water (BW) consumption in the United States and globally has increased amidst heightened concern about environmental contaminant exposures and health risks in drinking water supplies, despite a paucity of directly comparable, environmentally-relevant contaminant exposure data for BW. This study provides insight into exposures and cumulative risks to human health from inorganic...
Authors
Paul M. Bradley, Kristin M. Romanok, Kelly L. Smalling, Michael Focazio, Nicola Evans, Suzanne Fitzpatrick, Carrie Givens, Stephanie Gordon, James L. Gray, Emily Green, Dale Griffin, Michelle Hladik, Leslie Kanagy, John Lisle, Keith Loftin, R. Blaine McCleskey, Elizabeth Medlock-Kakaley, Ana Navas-Acien, David Roth, Paul South, Christopher Weis
Watershed-scale risk to aquatic organisms from complex chemical mixtures in the Shenandoah River Watershed-scale risk to aquatic organisms from complex chemical mixtures in the Shenandoah River
River waters contain complex chemical mixtures derived from natural and anthropogenic sources. Aquatic organisms are exposed to the entire chemical composition of the water, resulting in potential effects at the organismal through ecosystem level. This study applied a holistic approach to assess landscape, hydrological, chemical, and biological variables. On-site mobile laboratory...
Authors
Larry B. Barber, Kaycee Faunce, David Bertolatus, Michelle Hladik, Jeramy Roland Jasmann, Steffanie Keefe, Dana W. Kolpin, Michael T. Meyer, Jennifer Rapp, David Roth, Alan Vajda
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Central Plains Water Science Center, California Water Science Center, Chesapeake Bay Activities, Kansas Water Science Center, Virginia and West Virginia Water Science Center
The source, fate, and transport of arsenic in the Yellowstone hydrothermal system - An overview The source, fate, and transport of arsenic in the Yellowstone hydrothermal system - An overview
The Yellowstone Plateau Volcanic Field (YPVF) contains >10,000 thermal features including hot springs, pools, geysers, mud pots, and fumaroles with diverse chemical compositions. Arsenic (As) concentrations in YPVF thermal waters typically range from 0.005 to 4 mg/L, but an As concentration of 17 mg/L has been reported. Arsenic data from thermal springs, outflow drainages, rivers, and...
Authors
R. Blaine McCleskey, D. Nordstrom, Shaul Hurwitz, Daniel Colman, David Roth, Madeline Johnson, Eric S. Boyd
Sources, fate, and flux of riverine solutes in the Southwest Yellowstone Plateau Volcanic Field, USA Sources, fate, and flux of riverine solutes in the Southwest Yellowstone Plateau Volcanic Field, USA
Since the 1970s, temporal variations of hydrothermal discharge and thermal output from the numerous hydrothermal features in the Yellowstone Plateau Volcanic Field (YPVF) have been studied by measuring the chloride flux in the major rivers. In this study, the sources, fate, and flux of solutes in the Fall River and its major tributaries, in southwest Yellowstone National Park, were...
Authors
R. Blaine McCleskey, Shaul Hurwitz, Erin White, David Roth, David Susong, Jefferson Hungerford, Lonnie Olson
Hydrothermal activity in the southwest Yellowstone Plateau Volcanic Field Hydrothermal activity in the southwest Yellowstone Plateau Volcanic Field
In the past two decades, the U.S. Geological Survey and the National Park Service have studied hydrothermal activity across the Yellowstone Plateau Volcanic Field (YPVF) to improve the understanding of the magmatic-hydrothermal system and to provide a baseline for detecting future anomalous activity. In 2017 and 2018 we sampled water and gas over a large area in the southwest YPVF and...
Authors
Shaul Hurwitz, R. Blaine McCleskey, Deborah Bergfeld, Sara Peek, David Susong, David Roth, Jefferson Hungerford, Erin White, Lauren Harrison, Behnaz Hosseini, R. Vaughan, Andrew G. Hunt, James Paces
By
Water Resources Mission Area, National Cooperative Geologic Mapping Program, Volcano Hazards Program, Colorado Water Science Center, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center, Volcano Science Center, Denver Radiogenic Isotope Lab, Yellowstone Volcano Observatory
Sources, fate, and flux of geothermal solutes in the Yellowstone and Gardner Rivers, Yellowstone National Park, WY Sources, fate, and flux of geothermal solutes in the Yellowstone and Gardner Rivers, Yellowstone National Park, WY
The total discharge and thermal output from the numerous hydrothermal features in Yellowstone National Park (YNP) can be estimated from the chloride (Cl) flux in the Madison, Yellowstone, Falls, and Snake Rivers. Monitoring the Cl flux in these four major rivers provides a holistic view of the hydrothermal output from YNP and changes in the Cl flux may indicate changes in geothermal or...
Authors
R. Blaine McCleskey, David Roth, D. Mahony, D. Nordstrom, Stacy Kinsey
Coagulant and sorbent efficacy in removing mercury from surface waters in the Cache Creek watershed, California Coagulant and sorbent efficacy in removing mercury from surface waters in the Cache Creek watershed, California
Cache Creek drains part of northern California’s Coast Ranges and is an important source of mercury (Hg) to the Sacramento–San Joaquin Delta. Cache Creek is contaminated with Hg from several sources, including historical Hg and gold mines, native Hg in the soils, and active mineral springs. In laboratory experiments in a study conducted by the U.S. Geological Survey, in cooperation with...
Authors
Erica De Parsia, Jacob A. Fleck, David Krabbenhoft, Kim Hoang, David Roth, Paul Randall
Geochemical data for water, streambed sediment, and fish tissue from the Sierra Nevada Mercury Impairment Project, 2011–12 Geochemical data for water, streambed sediment, and fish tissue from the Sierra Nevada Mercury Impairment Project, 2011–12
This report presents geochemical data for surface water, streambed sediment, and fish tissue samples collected during low-flow conditions in 20 to 24 Sierra Nevada streams during 2011 and 2012. The dataset is part of a larger study designed to assess the factors that control mercury concentrations in fish tissue and to develop a model that predicts mercury concentration in the tissue of...
Authors
Elizabeth Stumpner, Charles Alpers, Mark Marvin-DiPasquale, Jennifer Agee, Evangelos Kakouros, Michelle Arias, Le H. Kieu, David Roth, Darrell Slotton, Jacob A. Fleck
Permafrost stores a globally significant amount of mercury Permafrost stores a globally significant amount of mercury
Changing climate in northern regions is causing permafrost to thaw with major implications for the global mercury (Hg) cycle. We estimated Hg in permafrost regions based on in situ measurements of sediment total mercury (STHg), soil organic carbon (SOC), and the Hg to carbon ratio (RHgC) combined with maps of soil carbon. We measured a median STHg of 43 ± 30 ng Hg g soil−1 and a median...
Authors
Paul Schuster, Kevin Schaefer, George Aiken, Ronald Antweiler, John DeWild, Joshua Gryziec, Alessio Gusmeroli, Gustaf Hugelius, Elchin Jafarov, David Krabbenhoft, Lin Liu, Nicole Herman-Mercer, Cuicui Mu, David Roth, Tim Schaefer, Robert Striegl, Kimberly Wickland, Tingjun Zhang
Effects of an extreme flood on trace elements in river water—From urban stream to major river basin Effects of an extreme flood on trace elements in river water—From urban stream to major river basin
Major floods adversely affect water quality through surface runoff, groundwater discharge, and damage to municipal water infrastructure. Despite their importance, it can be difficult to assess the effects of floods on streamwater chemistry because of challenges collecting samples and the absence of baseline data. This study documents water quality during the September 2013 extreme flood...
Authors
Larry Barber, Suzanne Paschke, William Battaglin, Chris Douville, Kevin Fitzgerald, Steffanie Keefe, David Roth, Alan Vajda
Science and Products
Filter Total Items: 30
Characterization of three common land-applied wastes: Inorganic, organic, and microbial compositions of biosolid, livestock, and drilling fluid waste, United States, 2021 and 2022 Characterization of three common land-applied wastes: Inorganic, organic, and microbial compositions of biosolid, livestock, and drilling fluid waste, United States, 2021 and 2022
It is common practice for waste byproducts generated from the treatment of municipal waste (biosolids), livestock production (manure), and oil and gas drilling operations (spent drill fluids and cuttings) to be applied to farmland as a cost-effective means of disposal. From June 2021 to January 2022, 34 samples of land-applied waste materials were collected in 14 U.S. states. Samples...
Geochemical, mineralogical, and grain-size data for deep cores from the Cache Creek Settling Basin and streambed sediments from the Sacramento River watershed Geochemical, mineralogical, and grain-size data for deep cores from the Cache Creek Settling Basin and streambed sediments from the Sacramento River watershed
The Cache Creek Settling Basin (CCSB) is a 13.3 km2 levee-bounded sediment retention basin located at the modern terminus of Cache Creek near the eastern boundary of Yolo County, approximately two miles NE of Woodland, California. The Cache Creek Settling Basin was constructed in 1937 by the U.S. Army Corps of Engineers to trap suspended sediment from the upper Cache Creek watershed...
Chemical concentration results for assessment of mixed-organic/inorganic chemical exposures in the southeast United States, beginning 2022 Chemical concentration results for assessment of mixed-organic/inorganic chemical exposures in the southeast United States, beginning 2022
This data release contains the concentration and quality-assurance results for inorganic constituents, organic compounds (volatile organic compounds [VOC], per- and polyfluoroalkyl substances [PFAS], pesticides, and disinfection byproducts [DBP]) collected in tapwater from locations in Alabama and Mississippi. Tapwater samples (11 public supply and 1 private well) were collected on...
Biogeochemical Data from Field Samples and Laboratory Experiments, Boulder Creek Watershed, Colorado (2019-2023) Biogeochemical Data from Field Samples and Laboratory Experiments, Boulder Creek Watershed, Colorado (2019-2023)
Biogeochemical processes are key drivers of chemical solubility and mobilization. Understanding these processes will lead to improved predictive capabilities and may aid with watershed management decisions. This data release presents results from the Boulder Creek, Colorado watershed, including analyses of water and sediment. From April to August 2019, water samples were collected weekly...
Environmental Sampling and Modeling Results to Characterize Surface-Water Quality at 32 Sites Across the Potomac River Watershed, 2022 (ver. 3.0, April 2025) Environmental Sampling and Modeling Results to Characterize Surface-Water Quality at 32 Sites Across the Potomac River Watershed, 2022 (ver. 3.0, April 2025)
This data release presents chemical results from investigations of surface-water quality in the Potomac River watershed (encompassing Washington, D.C. and parts of West Virginia, Virginia, Pennsylvania, and Maryland) conducted during low-flow conditions in July through September of 2022 and modeling results that support interpretative products. Water-quality sampling: A sampling campaign...
Longitudinal assessment of per- and polyfluoroalkyl substances and co-occurring inorganic and organic contaminants in Neshaminy Creek, Pennsylvania, November 2021 Longitudinal assessment of per- and polyfluoroalkyl substances and co-occurring inorganic and organic contaminants in Neshaminy Creek, Pennsylvania, November 2021
Per- and polyfluoroalkyl substances (PFAS) and co-occurring inorganic and organic contaminants are widely distributed in the environment and understanding their surface water sources is critical for water resource management. In November 2021, 13 sites were sampled along a stream reach in the Neshaminy Creek basin in southeastern Pennsylvania utilizing a time of travel sampling approach...
Evaluation of preservation techniques for trace metals and major cations for surface waters collected from the U.S. Geological Survey's National Water Quality Network Sites Evaluation of preservation techniques for trace metals and major cations for surface waters collected from the U.S. Geological Survey's National Water Quality Network Sites
The USGS National Field Manual (NFM) states "A representative sample is one that typifies in time and space that part of the aqueous system to be studied" and "obtaining representative samples is of primary importance for a relevant description of the environment." The NFM contains detailed chapters on the best practices for representative and contamination free sampling of major and...
Specific conductance data collected during slug additions Specific conductance data collected during slug additions
Slug additions are often the most accurate method for determining discharge when traditional current meter or acoustic measurements are unreliable because of high turbulence, rocky streambed, shallow or sheet flow, or the stream is physically inaccessible (e.g., under ice or canyon walls) or unsafe to wade (Zellweger et al., 1989, Kilpatrick and Cobb 1984, Ferranti 2015). The slug...
Geochemical data for post-fire surface water, streambed sediment, and soils from areas affected by the 2018 Camp Fire, Butte County, California Geochemical data for post-fire surface water, streambed sediment, and soils from areas affected by the 2018 Camp Fire, Butte County, California
During November 2018, the Camp Fire burned more than 150,000 acres in Butte County, California. The fire was the deadliest and most destructive in California history, destroying more than 18,000 structures and causing at least 85 fatalities. The U.S. Geological Survey sampled surface water in areas affected by the Camp Fire, plus an unburned control site, during two post-fire sampling...
National scale assessment for rare earth elements in dissolved water samples and supporting geochemistry National scale assessment for rare earth elements in dissolved water samples and supporting geochemistry
This dataset is in support of the publication "The addition of 144Nd to routine ICP-MS analysis as a quick screening tool for approximating earth elements (Q-STAR) in natural waters". It contains inductively coupled plasma mass spectrometry (ICP-MS) data from samples analyzed at the National Water Quality Laboratory (NWQL) from April 2021-May 2022. Data listed include estimated neodymium...
Geochemical Analysis of Bulk Dust and Human Respiratory Cells and Fluids in Research on Deployment-related Lung Injury Geochemical Analysis of Bulk Dust and Human Respiratory Cells and Fluids in Research on Deployment-related Lung Injury
Multiple techniques including, x-ray diffraction, scanning electron microscopy, laser diffraction particle analysis, and inductively coupled plasma spectrometry, were used to characterize the morphology and composition of dust used for biological studies as well as lung tissue from rats, personnel deployed to Southwest Asia, and control samples. The data presented in this release are...
Target-chemical concentrations and microbiological results in surface water and tapwater, Montana, 2022 Target-chemical concentrations and microbiological results in surface water and tapwater, Montana, 2022
This data release contains the concentration and quality-assurance results for inorganic constituents, as well as organic compounds (volatile organic compounds [VOC], per- and polyfluoroalkyl substances [PFAS], pesticides and disinfection byproducts [DBP]) and microbiological results collected in the Little Big Horn River and residential or commercial tapwater locations in Montana...
Filter Total Items: 19
Stream discharge determinations using slug additions and specific conductance Stream discharge determinations using slug additions and specific conductance
Stream discharge is often determined by wading the stream and measuring the velocity at fixed widths and depths. However, there are conditions when wading measurements are not safe or the measurements are poor because of high turbulence, rocky streambeds, shallow or sheet flow, aquatic plants, or inaccessibility due to ice. Under these conditions, it is often preferable to determine...
Authors
R. Blaine McCleskey, Robert Runkel, Sheila Murphy, David Roth
Contaminant exposure and transport from three potential reuse waters within a single watershed Contaminant exposure and transport from three potential reuse waters within a single watershed
Global demand for safe and sustainable water supplies necessitates a better understanding of contaminant exposures in potential reuse waters. In this study, we compared exposures and load contributions to surface water from the discharge of three reuse waters (wastewater effluent, urban stormwater, and agricultural runoff). Results document substantial and varying organic-chemical...
Authors
Jason Masoner, Dana W. Kolpin, Isabelle Cozzarelli, Paul M. Bradley, Brian Arnall, Kenneth Forshay, James L. Gray, Justin Groves, Michelle Hladik, Laura Hubbard, Luke R. Iwanowicz, Jeanne Jaeschke, Rachael Lane, R. Blaine McCleskey, Bridgette Polite, David Roth, Michael Pettijohn, Michaelah Wilson
By
Water Resources Mission Area, Environmental Health Program, Central Plains Water Science Center, Eastern Ecological Science Center, Colorado Water Science Center, California Water Science Center, Central Midwest Water Science Center, Geology, Energy & Minerals Science Center, Kansas Water Science Center, Oklahoma-Texas Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Reston Biogeochemical Processes in Groundwater Laboratory
Bottled water contaminant exposures and potential human effects Bottled water contaminant exposures and potential human effects
Bottled water (BW) consumption in the United States and globally has increased amidst heightened concern about environmental contaminant exposures and health risks in drinking water supplies, despite a paucity of directly comparable, environmentally-relevant contaminant exposure data for BW. This study provides insight into exposures and cumulative risks to human health from inorganic...
Authors
Paul M. Bradley, Kristin M. Romanok, Kelly L. Smalling, Michael Focazio, Nicola Evans, Suzanne Fitzpatrick, Carrie Givens, Stephanie Gordon, James L. Gray, Emily Green, Dale Griffin, Michelle Hladik, Leslie Kanagy, John Lisle, Keith Loftin, R. Blaine McCleskey, Elizabeth Medlock-Kakaley, Ana Navas-Acien, David Roth, Paul South, Christopher Weis
Watershed-scale risk to aquatic organisms from complex chemical mixtures in the Shenandoah River Watershed-scale risk to aquatic organisms from complex chemical mixtures in the Shenandoah River
River waters contain complex chemical mixtures derived from natural and anthropogenic sources. Aquatic organisms are exposed to the entire chemical composition of the water, resulting in potential effects at the organismal through ecosystem level. This study applied a holistic approach to assess landscape, hydrological, chemical, and biological variables. On-site mobile laboratory...
Authors
Larry B. Barber, Kaycee Faunce, David Bertolatus, Michelle Hladik, Jeramy Roland Jasmann, Steffanie Keefe, Dana W. Kolpin, Michael T. Meyer, Jennifer Rapp, David Roth, Alan Vajda
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Central Plains Water Science Center, California Water Science Center, Chesapeake Bay Activities, Kansas Water Science Center, Virginia and West Virginia Water Science Center
The source, fate, and transport of arsenic in the Yellowstone hydrothermal system - An overview The source, fate, and transport of arsenic in the Yellowstone hydrothermal system - An overview
The Yellowstone Plateau Volcanic Field (YPVF) contains >10,000 thermal features including hot springs, pools, geysers, mud pots, and fumaroles with diverse chemical compositions. Arsenic (As) concentrations in YPVF thermal waters typically range from 0.005 to 4 mg/L, but an As concentration of 17 mg/L has been reported. Arsenic data from thermal springs, outflow drainages, rivers, and...
Authors
R. Blaine McCleskey, D. Nordstrom, Shaul Hurwitz, Daniel Colman, David Roth, Madeline Johnson, Eric S. Boyd
Sources, fate, and flux of riverine solutes in the Southwest Yellowstone Plateau Volcanic Field, USA Sources, fate, and flux of riverine solutes in the Southwest Yellowstone Plateau Volcanic Field, USA
Since the 1970s, temporal variations of hydrothermal discharge and thermal output from the numerous hydrothermal features in the Yellowstone Plateau Volcanic Field (YPVF) have been studied by measuring the chloride flux in the major rivers. In this study, the sources, fate, and flux of solutes in the Fall River and its major tributaries, in southwest Yellowstone National Park, were...
Authors
R. Blaine McCleskey, Shaul Hurwitz, Erin White, David Roth, David Susong, Jefferson Hungerford, Lonnie Olson
Hydrothermal activity in the southwest Yellowstone Plateau Volcanic Field Hydrothermal activity in the southwest Yellowstone Plateau Volcanic Field
In the past two decades, the U.S. Geological Survey and the National Park Service have studied hydrothermal activity across the Yellowstone Plateau Volcanic Field (YPVF) to improve the understanding of the magmatic-hydrothermal system and to provide a baseline for detecting future anomalous activity. In 2017 and 2018 we sampled water and gas over a large area in the southwest YPVF and...
Authors
Shaul Hurwitz, R. Blaine McCleskey, Deborah Bergfeld, Sara Peek, David Susong, David Roth, Jefferson Hungerford, Erin White, Lauren Harrison, Behnaz Hosseini, R. Vaughan, Andrew G. Hunt, James Paces
By
Water Resources Mission Area, National Cooperative Geologic Mapping Program, Volcano Hazards Program, Colorado Water Science Center, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center, Volcano Science Center, Denver Radiogenic Isotope Lab, Yellowstone Volcano Observatory
Sources, fate, and flux of geothermal solutes in the Yellowstone and Gardner Rivers, Yellowstone National Park, WY Sources, fate, and flux of geothermal solutes in the Yellowstone and Gardner Rivers, Yellowstone National Park, WY
The total discharge and thermal output from the numerous hydrothermal features in Yellowstone National Park (YNP) can be estimated from the chloride (Cl) flux in the Madison, Yellowstone, Falls, and Snake Rivers. Monitoring the Cl flux in these four major rivers provides a holistic view of the hydrothermal output from YNP and changes in the Cl flux may indicate changes in geothermal or...
Authors
R. Blaine McCleskey, David Roth, D. Mahony, D. Nordstrom, Stacy Kinsey
Coagulant and sorbent efficacy in removing mercury from surface waters in the Cache Creek watershed, California Coagulant and sorbent efficacy in removing mercury from surface waters in the Cache Creek watershed, California
Cache Creek drains part of northern California’s Coast Ranges and is an important source of mercury (Hg) to the Sacramento–San Joaquin Delta. Cache Creek is contaminated with Hg from several sources, including historical Hg and gold mines, native Hg in the soils, and active mineral springs. In laboratory experiments in a study conducted by the U.S. Geological Survey, in cooperation with...
Authors
Erica De Parsia, Jacob A. Fleck, David Krabbenhoft, Kim Hoang, David Roth, Paul Randall
Geochemical data for water, streambed sediment, and fish tissue from the Sierra Nevada Mercury Impairment Project, 2011–12 Geochemical data for water, streambed sediment, and fish tissue from the Sierra Nevada Mercury Impairment Project, 2011–12
This report presents geochemical data for surface water, streambed sediment, and fish tissue samples collected during low-flow conditions in 20 to 24 Sierra Nevada streams during 2011 and 2012. The dataset is part of a larger study designed to assess the factors that control mercury concentrations in fish tissue and to develop a model that predicts mercury concentration in the tissue of...
Authors
Elizabeth Stumpner, Charles Alpers, Mark Marvin-DiPasquale, Jennifer Agee, Evangelos Kakouros, Michelle Arias, Le H. Kieu, David Roth, Darrell Slotton, Jacob A. Fleck
Permafrost stores a globally significant amount of mercury Permafrost stores a globally significant amount of mercury
Changing climate in northern regions is causing permafrost to thaw with major implications for the global mercury (Hg) cycle. We estimated Hg in permafrost regions based on in situ measurements of sediment total mercury (STHg), soil organic carbon (SOC), and the Hg to carbon ratio (RHgC) combined with maps of soil carbon. We measured a median STHg of 43 ± 30 ng Hg g soil−1 and a median...
Authors
Paul Schuster, Kevin Schaefer, George Aiken, Ronald Antweiler, John DeWild, Joshua Gryziec, Alessio Gusmeroli, Gustaf Hugelius, Elchin Jafarov, David Krabbenhoft, Lin Liu, Nicole Herman-Mercer, Cuicui Mu, David Roth, Tim Schaefer, Robert Striegl, Kimberly Wickland, Tingjun Zhang
Effects of an extreme flood on trace elements in river water—From urban stream to major river basin Effects of an extreme flood on trace elements in river water—From urban stream to major river basin
Major floods adversely affect water quality through surface runoff, groundwater discharge, and damage to municipal water infrastructure. Despite their importance, it can be difficult to assess the effects of floods on streamwater chemistry because of challenges collecting samples and the absence of baseline data. This study documents water quality during the September 2013 extreme flood...
Authors
Larry Barber, Suzanne Paschke, William Battaglin, Chris Douville, Kevin Fitzgerald, Steffanie Keefe, David Roth, Alan Vajda