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
In situ bacterial selenate reduction in the agricultural drainage systems of western Nevada In situ bacterial selenate reduction in the agricultural drainage systems of western Nevada
Dissimilatory in situ selenate reduction to elemental selenium in sediments from irrigated agricultural drainage regions of western Nevada was measured at ambient Se oxyanion concentrations. Selenate reduction was rapid, with turnover rate constants ranging from 0.04 to 1.8 h-1 at total Se concentrations in pore water of 13 to 455 nM. Estimates of removal rates of selenium oxyanions were...
Authors
R.S. Oremland, N.A. Steinberg, T. S. Presser, L.G. Miller
Assessment of hydrogeologic conditions with emphasis on water quality and wastewater injection, Southwest Sarasota and West Charlotte counties, Florida Assessment of hydrogeologic conditions with emphasis on water quality and wastewater injection, Southwest Sarasota and West Charlotte counties, Florida
No abstract available.
Authors
C. B. Hutchinson
In situ measurement of methane oxidation in groundwater by using natural-gradient tracer tests In situ measurement of methane oxidation in groundwater by using natural-gradient tracer tests
Methane oxidation was measured in an unconfined sand and gravel aquifer (Cape Cod, Mass.) by using in situ natural-gradient tracer tests at both a pristine, oxygenated site and an anoxic, sewage-contaminated site. The tracer sites were equipped with multilevel sampling devices to create target grids of sampling points; the injectate was prepared with groundwater from the tracer site to...
Authors
R. L. Smith, B.L. Howes, S. P. Garabedian
Trace metals in clams (Macoma Balthica) and sediments at the Palo Alto mudflat in south San Francisco Bay: April, 1990 - April, 1991 Trace metals in clams (Macoma Balthica) and sediments at the Palo Alto mudflat in south San Francisco Bay: April, 1990 - April, 1991
No abstract available.
Authors
Samuel N. Luoma, Daniel J. Cain, Cynthia Brown, Ellen V. Axtmann
Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the mid-continent United States, 1991 Work plan for regional reconnaissance for selected herbicides and nitrate in ground water of the mid-continent United States, 1991
An approach was developed to obtain a consistent, regional distribution of herbicide and nitrate data from near-surface aquifers in the corn and soybean producing region of the mid-continent. Near-surface aquifers are defined as those with the top of aquifer material within 50 feet of land surface, regardless of whether the material is saturated or unsaturated. Three hundred wells will...
Authors
D.W. Kolpin, M. R. Burkart
A steady-state unsaturated-zone model to simulate pesticide transport A steady-state unsaturated-zone model to simulate pesticide transport
No abstract available.
Authors
A. T. Rutledge, J. O. Helgesen
Geochemical investigation of an oil spill in San Francisco Bay, California Geochemical investigation of an oil spill in San Francisco Bay, California
No abstract available.
Authors
F. D. Hostettler, J. B. Rapp, K.A. Kvenvolden
Herbicides in surface waters of the midwestern United States: The effect of spring flush Herbicides in surface waters of the midwestern United States: The effect of spring flush
Approximately three-fourths of all preemergent herbicides used in the United States are applied to row crops over a 12-state area, called the "corn belt" (I). The application of these compounds may cause widespread degradation of water quality (2). Because herbicides are water soluble, there is the potential for leaching into groundwater and surface water (3, 4), as well as aerial...
Authors
E.M. Thurman, D. A. Goolsby, M. T. Meyer, D.W. Kolpin
Selectivity and effectiveness of extractants used to release metals associated with organic matter Selectivity and effectiveness of extractants used to release metals associated with organic matter
Partial extraction procedures can be used to release metals associated with organic matter in natural materials. Reagents commonly employed for this purpose include hydrogen peroxide, Na hypochlorite and Na pyrophosphate. This study tested the selectivity of these reagents by comparing the amount of Fe, Mn, Zn and Cu they released from sulfide and oxide minerals and determined the...
Authors
C. S.E. Papp, L.H. Filipek, K. S. Smith
Selected hydrologic data for the upper Arkansas River basin, Colorado, 1986-89 Selected hydrologic data for the upper Arkansas River basin, Colorado, 1986-89
No abstract available.
Authors
Gregory A. Wetherbee, Briant A. Kimball, Wendy S. Maura
Selected meteorological data for an arid site near Beatty, Nye County, Nevada, calendar year 1986 Selected meteorological data for an arid site near Beatty, Nye County, Nevada, calendar year 1986
Selected meteorological data were collected at a study site adjacent to a low-level radioactive-waste burial facility near Beatty, Nevada, for calendar year 1986. Data were collected in support of an ongoing study to estimate the potential for downward movement of radionuclides into the unsaturated sediments beneath waste-burial trenches at the facility. The data include air temperature...
Authors
James L. Wood, Jeffrey M. Fischer
Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the middle Rio Grande Valley and Bosque del Apache National Wildlife Refuge, New Mexico, 1988-89 Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the middle Rio Grande Valley and Bosque del Apache National Wildlife Refuge, New Mexico, 1988-89
No abstract available.
Authors
Kim Ong, T.F. O’Brien, M.D. Rucker