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: 4098
Model for humus in soils and sediments Model for humus in soils and sediments
No abstract available.
Authors
R.L. Wershaw
Crude oil in a shallow sand and gravel aquifer—I. Hydrogeology and inorganic geochemistry Crude oil in a shallow sand and gravel aquifer—I. Hydrogeology and inorganic geochemistry
Changes in the distribution of inorganic solutes in a shallow ground water contaminated by crude oil document a series of geochemical reactions initiated by biodegradation of the oil. Upgradient of an oil body floating on the water table, oxidation of oil to carbonic acid dissolves carbonate minerals in the aquifer matrix. In this oxidized zone pH is depressed ∼1 pH unit, and the...
Authors
P.C. Bennett, D.E. Siegel, M.J. Baedecker, M. F. Hult
Coupled effects of vertical mixing and benthic grazing on phytoplankton populations in shallow, turbid estuaries Coupled effects of vertical mixing and benthic grazing on phytoplankton populations in shallow, turbid estuaries
Coastal ocean waters tend to have very different patterns of phytoplankton biomass variability from the open ocean, and the connections between physical variability and phytoplankton bloom dynamics are less well established for these shallow systems. Predictions of biological responses to physical variability in these environments is inherently difficult because the recurrent seasonal...
Authors
Jeffrey R. Koseff, Jacqueline K. Holen, Stephen G. Monismith, James E. Cloern
Evaluation of statistical models to predict chemical quality of shallow ground water in the Pine Barrens of Suffolk County, Long Island, New York Evaluation of statistical models to predict chemical quality of shallow ground water in the Pine Barrens of Suffolk County, Long Island, New York
No abstract available.
Authors
P. E. Stackelberg, S. F. Siwiec
Suspended sediment in San Francisco Bay Estuary, California: Recent history and available data sets Suspended sediment in San Francisco Bay Estuary, California: Recent history and available data sets
No abstract available.
Authors
D. H. Peterson, M.A. Noble, R. E. Smith
Geophysical logging studies in the Snake River Plain Aquifer at the Idaho National Engineering Laboratory — Wells 44, 45, and 46 Geophysical logging studies in the Snake River Plain Aquifer at the Idaho National Engineering Laboratory — Wells 44, 45, and 46
No abstract available.
Authors
R. H. Morin, Warren Barrash, Frederick L. Paillet, T. A. Taylor
Age dating ground water by use of chlorofluorocarbons (CCl3F and CCl2F2), and distribution of chlorofluorocarbons in the unsaturated zone, Snake River Plain Aquifer, Idaho National Engineering Laboratory, Idaho Age dating ground water by use of chlorofluorocarbons (CCl3F and CCl2F2), and distribution of chlorofluorocarbons in the unsaturated zone, Snake River Plain Aquifer, Idaho National Engineering Laboratory, Idaho
No abstract available.
Authors
Eurybiades Busenberg, E.P. Weeks, Niel Plummer, R. C. Bartholomay
Data on chlorofluorocarbons (CCl3F and CCl2F2) as dating tools and hydrologic tracers in shallow ground water of the Delmarva Peninsula Data on chlorofluorocarbons (CCl3F and CCl2F2) as dating tools and hydrologic tracers in shallow ground water of the Delmarva Peninsula
No abstract available.
Authors
Niel Plummer, S.A. Dunkle, Eurybiades Busenberg
Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations
The National Water-Quality Assessment pilot project for the Central Oklahoma aquifer examined the chemical and isotopic composition of ground water, the abundances and textures of minerals in core samples, and water levels and hydraulic properties in the flow system to identify geochemical reactions occurring in the aquifer and rates and directions of ground-water flow. The aquifer...
Authors
David L. Parkhurst, Scott C. Christenson, George N. Breit
Ground-water quality at the Management Systems Evaluation Area near Princeton, Minnesota, 1991-92 Ground-water quality at the Management Systems Evaluation Area near Princeton, Minnesota, 1991-92
The northern cornbelt sand-plains Management Systems Evaluation Area (MSEA) program is a multiagency, multistate initiative to evaluate the effects of modified and prevailing farming systems on water quality in a sand-plain area in Minnesota and at satellite areas in North and South Dakota, and Wisconsin. The primary objective of Minnesota MSEA is to evaluate the effects of ridge-tillage...
Authors
Matthew K. Landon, Geoffrey N. Delin, J.A. Lamb, Lei Guo
Diazinon concentrations in the Sacramento and San Joaquin Rivers and San Francisco Bay, California, February 1993 Diazinon concentrations in the Sacramento and San Joaquin Rivers and San Francisco Bay, California, February 1993
The distribution and possible biological effects of a dormant spray pesticide, diazinon, were examined by measuring pesticide concentrations and estimating toxicity using bioassays at a series of sites in the Sacramento-San Joaquin Delta and San Francisco Bay. Pulses of diazinon were observed in early February 1993 in the Sacramento and San Joaquin Rivers after heavy rains, with elevated
Authors
Kathryn Kuivila
Hydrogeologic, water-quality, and land-use data for the reconnaissance of herbicides and nitrate in near-surface aquifers of the Midcontinental United States, 1991 Hydrogeologic, water-quality, and land-use data for the reconnaissance of herbicides and nitrate in near-surface aquifers of the Midcontinental United States, 1991
Water samples were collected during the spring and summer of 1991 from 303 wells penetrating near-surface unconsolidated and bedrock aquifers of the midcontinental United States. Samples were analyzed for 11 herbicides, 2 dealkylated atrazine metabolites, and 4 nutrients. Specific conductance, pH, and dissolved-oxygen concentrations of the ground water were measured onsite. Ancillary...
Authors
D.W. Kolpin, M. R. Burkart, E.M. Thurman