Publications
Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).
GeoHEALTH-USGS Newsletter
GeoHEALTH-USGS Newsletter
The GeoHEALTH–USGS Newsletter—published since 2004—provides information on USGS science activities pertinent to safeguarding the health of fish, wildlife, domesticated animals, and people from environmental exposures to contaminants and pathogens.
Featured Science Activities
Featured Science Activities
Learn about our Featured Science Activities through our pages that highlight studies, publications, and results.
Filter Total Items: 4093
Dams and downstream ground water Dams and downstream ground water
No abstract available .
Authors
Jim Constantz
Questa baseline and pre-mining ground water investigation: 11. Geochemistry of composited material from alteration scars and mine-waste piles Questa baseline and pre-mining ground water investigation: 11. Geochemistry of composited material from alteration scars and mine-waste piles
Composited, surficial material was collected from alteration scars, a less intensely altered site, and mine-waste piles. All samples were analyzed for forty elements by inductively coupled plasma-atomic emission spectrometry, total sulfur and quantitative X-ray diffraction. This work was performed in cooperation with the New Mexico Environment Department.
Authors
Paul H. Briggs, S. Sutley, Keith Livo
Atmospheric deposition of nutrients, pesticides, and mercury in Rocky Mountain National Park, Colorado, 2002 Atmospheric deposition of nutrients, pesticides, and mercury in Rocky Mountain National Park, Colorado, 2002
Nutrients, current-use pesticides, and mercury were measured in atmospheric deposition during summer in Rocky Mountain National Park in Colorado to improve understanding of the type and magnitude of atmospheric contaminants being deposited in the park. Two deposition sites were established on the east side of the park: one at an elevation of 2,902 meters near Bear Lake for nutrients and...
Authors
M. Mast, Donald Campbell, George Ingersoll, William T. Foreman, David Krabbenhoft
Heat as a tool for studying the movement of ground water near streams Heat as a tool for studying the movement of ground water near streams
Stream temperature has long been recognized as an important water quality parameter. Temperature plays a key role in the health of a stream’s aquatic life, both in the water column and in the benthic habitat of streambed sediments. Many fish are sensitive to temperature. For example, anadromous salmon require specific temperature ranges to successfully develop, migrate, and spawn [see...
Water-quality, bed-sediment, and biological data (October 2001 through September 2002) and statistical summaries of data for streams in the upper Clark Fork basin, Montana Water-quality, bed-sediment, and biological data (October 2001 through September 2002) and statistical summaries of data for streams in the upper Clark Fork basin, Montana
No abstract available.
Authors
Kent Dodge, Michelle Hornberger, Irene Lavigne
Questa baseline and pre-mining ground-water quality investigation. 2. Low-flow (2001) and snowmelt (2002) synoptic/tracer water chemistry for the Red River, New Mexico Questa baseline and pre-mining ground-water quality investigation. 2. Low-flow (2001) and snowmelt (2002) synoptic/tracer water chemistry for the Red River, New Mexico
Water analyses are reported for 259 samples collected from the Red River, New Mexico, and its tributaries during low-flow(2001) and spring snowmelt (2002) tracer studies. Water samples were collected along a 20-kilometer reach of the Red River beginning just east of the town of Red River and ending at the U.S. Geological Survey streamflow-gaging station located east of Questa, New Mexico...
Authors
R. McCleskey, D. Nordstrom, Judy Steiger, Briant Kimball, Philip Verplanck
Airflows and turbulent flux measurements in mountainous terrain: Part 1. Canopy and local effects Airflows and turbulent flux measurements in mountainous terrain: Part 1. Canopy and local effects
We have studied the effects of local topography and canopy structure on turbulent flux measurements at a site located in mountainous terrain within a subalpine, coniferous forest. Our primary aim was to determine whether the complex terrain of the site affects the accuracy of eddy flux measurements from a practical perspective. We observed displacement heights, roughness lengths...
Authors
Andrew Turnipseed, Dean Anderson, Peter Blanken, William Baugh, Russell Monson
Use of boundary fluxes when simulating solute transport with the MODFLOW ground-water transport process Use of boundary fluxes when simulating solute transport with the MODFLOW ground-water transport process
This report describes modifications to a U.S. Geological Survey (USGS) threedimensional solute-transport model (MODFLOWGWT), which is incorporated into the USGS MODFLOW ground-water model as the Ground- Water Transport (GWT) Process. The modifications improve the capability of MODFLOW-GWT to accurately simulate solute transport in simulations that represent a nonzero flux across an...
Authors
Leonard Konikow, G.Z. Hornberger
Arsenic and metal loads and source areas in the Middle Fork Warm Springs Creek watershed, Jefferson County, Montana, June 2001 Arsenic and metal loads and source areas in the Middle Fork Warm Springs Creek watershed, Jefferson County, Montana, June 2001
No abstract available.
Authors
Thomas E. Cleasby, Joanna N. Thamke, David Nimick
Reconnaissance data for glyphosate, other selected herbicides, their degradation products, and antibiotics in 51 streams in nine midwestern states, 2002 Reconnaissance data for glyphosate, other selected herbicides, their degradation products, and antibiotics in 51 streams in nine midwestern states, 2002
Since 1989, the U.S. Geological Survey has conducted periodic reconnaissance studies of streams in the Midwestern United States to determine the geographic and seasonal distribution of herbicide compounds. These studies have documented that large amounts of acetochlor, alachlor, atrazine, cyanazine, metolachlor, and their degradation products are flushed into streams during post...
Authors
Elisabeth Scribner, William Battaglin, Julie Dietze, E.M. Thurman
Modeling hyporheic zone processes Modeling hyporheic zone processes
Stream biogeochemistry is influenced by the physical and chemical processes that occur in the surrounding watershed. These processes include the mass loading of solutes from terrestrial and atmospheric sources, the physical transport of solutes within the watershed, and the transformation of solutes due to biogeochemical reactions. Research over the last two decades has identified the...
Authors
Robert Runkel, Diane McKnight, Harihar Rajaram
Announcing a Hydrogeology Journal theme issue on "The future of hydrogeology" Announcing a Hydrogeology Journal theme issue on "The future of hydrogeology"
What is the future of hydrogeology? Are most of the fundamental scientific problems in hydrogeology already solved? Is there really any need for more fundamental research, field measurements, or method development? Have recent scientific advances really added capabilities and tools for our practical needs? Are there any unsolved hydrogeologic questions still remaining that are vital to...
Authors
Clifford Voss