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: 4097
Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group: Determination of selected herbicides and their degradation products in water using solid-phase extraction and gas chromatography/mass spectrometry Methods of analysis by the U.S. Geological Survey Organic Geochemistry Research Group: Determination of selected herbicides and their degradation products in water using solid-phase extraction and gas chromatography/mass spectrometry
A method for the extraction and analysis of eight herbicides and five degradation products using solid-phase extraction from natural water samples followed by gas chromatography/mass spectrometry is presented in this report. This method was developed for dimethenamid; flufenacet; fluometuron and its degradation products, demethylfluometuron (DMFM), 3-(trifluromethyl)phenylurea (TFMPU), 3...
Authors
J.L. Kish, E.M. Thurman, E.A. Scribner, L.R. Zimmerman
Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire
No abstract available.
Authors
W.C. Burton, G. J. Walsh, T. R. Armstrong
Data from a thick unsaturated zone underlying Oro Grande and Sheep Creek washes in the western part of the Mojave Desert, near Victorville, San Bernardino County, California Data from a thick unsaturated zone underlying Oro Grande and Sheep Creek washes in the western part of the Mojave Desert, near Victorville, San Bernardino County, California
This report presents data on the physical properties of unsaturated alluvial deposits and on the chemical and isotopic composition of soil water and soil gas collected at 12 monitoring sites in the western part of the Mojave Desert, near Victorville, California. Sites were installed using the ODEX air-hammer method. Seven sites were located in the active channels of Oro Grande and Sheep...
Authors
John A. Izbicki, Dennis A. Clark, Maria I. Pimental, Michael Land, John C. Radyk, Robert L. Michel
Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire
No abstract available.
Authors
W.C. Burton, G. J. Walsh, T. R. Armstrong
Hydrogeologic characterization of six sites in southeastern Minnesota using borehole flowmeters and other geophysical logs Hydrogeologic characterization of six sites in southeastern Minnesota using borehole flowmeters and other geophysical logs
No abstract available.
Authors
Frederick L. Paillet, James Lundy, Robert Tipping, Anthony Runkel, Laurel Reeves, Jeffrey Green
Water-quantity and water-quality aspects of a 500-year flood - Nishnabotna River, southwest Iowa, June 1998 Water-quantity and water-quality aspects of a 500-year flood - Nishnabotna River, southwest Iowa, June 1998
Flooding that occurred in southwest Iowa during June 15–17, 1998, was the worst flood ever recorded on the Nishnabotna River, exceeding the theoretical 500-year flood calculated from peak-flow records (1922 to present). This flood was a direct consequence of severe thunderstorm activity that caused more than 4 inches of rain to fall over a large part of the Nishnabotna River Basin. In...
Authors
Dana W. Kolpin, Edward E. Fischer, Douglas J. Schnoebelen
Metals transport in the Sacramento River, California, 1996-1997; volume 1: Methods and data Metals transport in the Sacramento River, California, 1996-1997; volume 1: Methods and data
Metals transport in the Sacramento River, northern California, was evaluated on the basis of samples of water, suspended colloids, streambed sediment, and caddisfly larvae that were collected on one to six occasions at 19 sites in the Sacramento River Basin from July 1996 to June 1997. Four of the sampling periods (July, September, and November 1996; and May-June 1997) took place during...
Authors
Charles N. Alpers, Howard E. Taylor, Joseph L. Domagalski
Temperatures and water potentials in shallow unsaturated alluvium next to a burial site for low-level radioactive waste, Amargosa Desert, Nye County, Nevada, 1987-96 Temperatures and water potentials in shallow unsaturated alluvium next to a burial site for low-level radioactive waste, Amargosa Desert, Nye County, Nevada, 1987-96
No abstract available.
Authors
Mary L. Tumbusch, David E. Prudic
Schlumberger DC resistivity soundings in the Boulder Watershed, Jefferson and Lewis and Clark counties, Montana Schlumberger DC resistivity soundings in the Boulder Watershed, Jefferson and Lewis and Clark counties, Montana
During July, 1997, twenty four Schlumberger dc resistivity soundings were made in the Boulder watershed and adjacent areas (fig. 1). The objective of geophysical studies in the watershed is to map subsurface lithologic, structural and hydrologic features important in controlling possible ground water contamination from mining activities and for design of remediation efforts. These...
Authors
Bruce D. Smith, Tracy Sole
Metal exposure to a benthic invertebrate, Hydropsyche californica, in the Sacramento River down stream of Keswick Reservoir, California Metal exposure to a benthic invertebrate, Hydropsyche californica, in the Sacramento River down stream of Keswick Reservoir, California
No abstract available.
Authors
Daniel J. Cain, James L. Carter, Steven V. Fend, Samuel N. Luoma, Charles N. Alpers, Howard E. Taylor
The significance of microbial processes in hydrogeology and geochemistry The significance of microbial processes in hydrogeology and geochemistry
Microbial processes affect the chemical composition of groundwater and the hydraulic properties of aquifers in both contaminated and pristine groundwater systems. The patterns of water-chemistry changes that occur depend upon the relative abundance of electron donors and electron acceptors. In many pristine aquifers, where microbial metabolism is limited by the availability of electron...
Authors
F. H. Chapelle
Spatial and temporal variability of picocyanobacteria Synechococcus sp. in San Francisco Bay Spatial and temporal variability of picocyanobacteria Synechococcus sp. in San Francisco Bay
We collected samples monthly, from April to August 1998, to measure the abundance of autotrophic picoplankton in San Francisco Bay. Samples taken along a 160-km transect showed that picocyanobacteria (Synechococcus sp.) was a persistent component of the San Francisco Bay phytoplankton in all the estuarine habitats, from freshwater to seawater and during all months of the spring-summer...
Authors
X. Ning, J. E. Cloern, B.E. Cole