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
Design and analysis of tracer tests to determine effective porosity and dispersivity in fractured sedimentary rocks, Newark Basin, New Jersey Design and analysis of tracer tests to determine effective porosity and dispersivity in fractured sedimentary rocks, Newark Basin, New Jersey
No abstract available.
Authors
Glen B. Carleton, Claire Welty, Herbert T. Buxton
Processing of seismic tomography data collected at Tunnel 160, Deglen Mountain, Kazakhstan Processing of seismic tomography data collected at Tunnel 160, Deglen Mountain, Kazakhstan
No abstract available.
Authors
Karl Ellefsen, William Leith
Analytical results for 35 mine-waste tailings cores and six bed sediment samples, and an estimate of the volume of contaminated materials at Buckeye meadow on upper Basin Creek, northern Jefferson County, Montana Analytical results for 35 mine-waste tailings cores and six bed sediment samples, and an estimate of the volume of contaminated materials at Buckeye meadow on upper Basin Creek, northern Jefferson County, Montana
Metal-mining related wastes in the Boulder River basin study area in northern Jefferson County, Montana have been implicated in their detrimental effects on water quality with regard to acid-generation and toxic-metal solubilization. Flotation-mill tailings in the meadow below the Buckeye mine, hereafter referred to as the Buckeye mill-tailings site, have been identified as significant
Authors
David L. Fey, Stan E. Church, Christopher J. Finney
pick_xwell, a program for interactive picking of crosswell seismic and radar data pick_xwell, a program for interactive picking of crosswell seismic and radar data
Program 'pick_xwell' is used to interactively pick travel times in crosswell seismic and radar data. In addition, the traces and the travel times can be plotted on the computer screen or printed to a file in postscript format. The program is written in the IDL programming language, and it is executed, in command-line mode, within the IDL program. The IDL program must be run from an X...
Authors
K.J. Ellefsen
Upgrade to MODFLOW-GUI; addition of MODPATH, ZONEBDGT, and additional MODFLOW packages to the U.S. Geological Survey MODFLOW-96 Graphical-User Interface Upgrade to MODFLOW-GUI; addition of MODPATH, ZONEBDGT, and additional MODFLOW packages to the U.S. Geological Survey MODFLOW-96 Graphical-User Interface
This report describes enhancements to a Graphical-User Interface (GUI) for MODFLOW-96, the U.S. Geological Survey (USGS) modular, three-dimensional, finitedifference ground-water flow model, and MOC3D, the USGS three-dimensional, method-ofcharacteristics solute-transport model. The GUI is a plug-in extension (PIE) for the commercial program Argus ONEe. The GUI has been modified to...
Authors
R.B. Winston
Ground-water resources of Kings and Queens counties, Long Island, New York Ground-water resources of Kings and Queens counties, Long Island, New York
From 1981 through 1986, the U.S. Geological Survey investigated the ground-water system of western Long Island, New York, including Kings and Queens counties. This report describes the structure and operation of the western part of the Long Island ground-water system, and the hydrologic effects associated with human development from 1900 to the early 1980's. Recent (early 1980's) ground...
Authors
Herbert T. Buxton, Peter K. Shernoff
Sediment chronology in San Francisco Bay, California, defined by 210Pb, 234Th, 137Cs, and 239,340Pu Sediment chronology in San Francisco Bay, California, defined by 210Pb, 234Th, 137Cs, and 239,340Pu
Sediment chronologies based on radioisotope depth profiles were developed at two sites in the San Francisco Bay estuary to provide a framework for interpreting historical trends in organic compound and metal contaminant inputs. At Richardson Bay near the estuary mouth, sediments are highly mixed by biological and/or physical processes. Excess penetration ranged from 2 to more than 10 cm...
Authors
C. C. Fuller, Alexander van Geen, M. Baskaran, R. Anima
Bioaccumulation of metals by the bivalve Macoma balthica at a site in South San Francisco Bay between 1977 and 1997: Long-term trends and associated biological effects with changing pollutant loadings Bioaccumulation of metals by the bivalve Macoma balthica at a site in South San Francisco Bay between 1977 and 1997: Long-term trends and associated biological effects with changing pollutant loadings
No abstract available.
Authors
Michelle I. Hornberger, S. N. Luoma, D. Cain, F. Parchaso, C. Brown, R. Bouse, C.J. Wellise, John Thompson
Numerical simulation of vertical ground-water flux of the Rio Grande from ground-water temperature profiles, central New Mexico Numerical simulation of vertical ground-water flux of the Rio Grande from ground-water temperature profiles, central New Mexico
An important gap in the understanding of the hydrology of the Middle Rio Grande Basin, central New Mexico, is the rate at which water from the Rio Grande recharges the Santa Fe Group aquifer system. Several methodologies-including use of the Glover-Balmer equation, flood pulses, and channel permeameters- have been applied to this problem in the Middle Rio Grande Basin. In the work...
Authors
James R. Bartolino, Richard G. Niswonger
Nitrate in groundwater of the midwestern United States: A regional investigation on relations to land use and soil properties Nitrate in groundwater of the midwestern United States: A regional investigation on relations to land use and soil properties
The intense application of nitrogen-fertilizer to cropland in the midwestern United States has created concern about nitrate contamination of the region's aquifers. Since 1991, the US Geological Survey has used a network of 303 wells to investigate the regional distribution of nitrate in near-surface aquifers of the midwestern United States. Detailed land use and soil data were compiled...
Authors
D. Kolpin, M. Burkart, D. Goolsby
Agrichemicals in ground water of the midwestern USA: Relations to soil characteristics Agrichemicals in ground water of the midwestern USA: Relations to soil characteristics
A comprehensive set of soil characteristics were examined to determine the effect of soil on the transport of agrichemicals to ground water. This paper examines the relation of local soil characteristics to concentrations and occurrence of nitrate, atrazine (2-chloro-4 ethylamino-6-isopropylamino-s-trazine), and atrazine residue [atrazine + deethylatrazine (2-amino-4-chloro-6...
Authors
M. R. Burkart, D.W. Kolpin, R.J. Jaquis, K.J. Cole
Use and misuse of the chloride-mas balance method in estimating ground water recharge Use and misuse of the chloride-mas balance method in estimating ground water recharge
No abstract available.
Authors
Warren W. Wood