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
Lean about our Featured Science Activities through our pages that highlight science studies, publications, and results.
Filter Total Items: 3785
Characterization of the hydrogeology and water quality at the Management Systems Evaluation Area near Princeton, Minnesota, 1991-92 Characterization of the hydrogeology and water quality at the Management Systems Evaluation Area near Princeton, Minnesota, 1991-92
The Management Systems Evaluation Area (MSEA) program is part of a multi-scale, inter-agency initiative to evaluate the effects of agricultural management systems on water quality in the midwest corn belt. The Minnesota MSEA project is one of five projects selected to represent the principal hydrogeologic settings and geographic diversity of prevailing management systems in the midwest...
Authors
G. N. Delin, M.K. Landon, J.A. Lamb, J. L. Anderson
User's guide to revised method-of-characteristics solute-transport model (MOC--version 31) User's guide to revised method-of-characteristics solute-transport model (MOC--version 31)
The U.S. Geological Survey computer model to simulate two-dimensional solute transport and dispersion in ground water (Konikow and Bredehoeft, 1978; Goode and Konikow, 1989) has been modified to improve management of input and output data and to provide progressive run-time information. All opening and closing of files are now done automatically by the program. Names of input data files...
Authors
Leonard F. Konikow, G.E. Granato, G.Z. Hornberger
Intense alpha-particle emitting crystallites in uranium mill wastes Intense alpha-particle emitting crystallites in uranium mill wastes
No abstract available.
Authors
E. R. Landa, L. R. Stieff, M.S. Germani, A.B. Tanner, J.R. Evans
An interactive code (NETPATH) for modeling NET geochemical reactions along a flow PATH, version 2.0 An interactive code (NETPATH) for modeling NET geochemical reactions along a flow PATH, version 2.0
NETPATH is an interactive Fortran 77 computer program used to interpret net geochemical mass-balance reactions between an initial and final water along a hydrologic flow path. Alternatively, NETPATH computes the mixing proportions of two to five initial waters and net geochemical reactions that can account for the observed composition of a final water. The program utilizes previously...
Authors
Niel Plummer, Eric C. Prestemon, David L. Parkhurst
Chemical analyses of ground and surface water from Battle Brook drainage basin, near Princeton, Minnesota Chemical analyses of ground and surface water from Battle Brook drainage basin, near Princeton, Minnesota
No abstract available.
Authors
R. B. Wanty, M. L. Tuttle, J.K. Böhlke, Paul H. Briggs
Geohydrology and ground-water quality in the vicinity of a ground-water-contamination site in Rockford, Illinois Geohydrology and ground-water quality in the vicinity of a ground-water-contamination site in Rockford, Illinois
A geohydrologic investigation was performed by the U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency, to determine the distribution of volatile organic compounds in a fractured-rock aquifer near the Southeast Rockford Groundwater Contamination Site in Rockford, Ill. The geologic units of concern are the St. Peter Sandstone and Glenwood Formation; the...
Authors
R.T. Kay, S. T. Prinos, Frederick L. Paillet
Hydraulic properties of a fractured-rock aquifer, Lee Valley, San Diego County, California Hydraulic properties of a fractured-rock aquifer, Lee Valley, San Diego County, California
No abstract available.
Authors
Charles A. Kaehler, Paul A. Hsieh
Assessment of nonpoint-source contamination of the High Plains Aquifer in south-central Kansas, 1987 Assessment of nonpoint-source contamination of the High Plains Aquifer in south-central Kansas, 1987
Ground-water quality was assessed in a 5,000-square-mile area of the High Plains aquifer in south-central Kansas that is susceptible to nonpoint-source contamination from agricultural and petroleum-production activities. Of particular interest was the presence of agricultural chemicals and petroleum-derived hydrocarbons that might have been associated with brines that formerly were...
Authors
John O. Helgesen, Lloyd E. Stullken, A. T. Rutledge
Molecular weight, polydispersity, and spectroscopic properties of aquatic humic substances Molecular weight, polydispersity, and spectroscopic properties of aquatic humic substances
The number- and weight-averaged molecular weights of a number of aquatic fulvic acids, a commercial humic acid, and unfractionated organic matter from four natural water samples were measured by high-pressure size exclusion chromatography (HPSEC). Molecular weights determined in this manner compared favorably with those values reported in the literature. Both recent literature values and...
Authors
Y.-P. Chin, G. Aiken, Edward J. O’Loughlin
Batch experiments characterizing the reduction of chromium(VI) using suboxic material from a mildly reducing sand and gravel aquifer Batch experiments characterizing the reduction of chromium(VI) using suboxic material from a mildly reducing sand and gravel aquifer
Batch experiments were conducted with sand collected from a shallow sand and gravel aquifer to identify the principal chemical reactions influencing the reduction of Cr(VI), so that field-observed Cr(V1) reduction could be described. The reduction appeared to be heterogeneous and occurred primarily on Fe(I1)-bearing minerals. At only 1 wt % , the fine fraction (
Authors
Linda Davis Anderson, Douglas B. Kent, James A. Davis
Sorption of chlorobenzenes to cape cod aquifer sediments Sorption of chlorobenzenes to cape cod aquifer sediments
Sorption of tetra- and pentachlorobenzene by sediment from a glacial outwash aquifer on Cape Cod, MA, was evaluated. Particle size and mineralogical fractions (separated based on paramagnetic susceptibility) were characterized with respect to sediment organic carbon (SOC), mineralogy, surface area, metal oxide coatings, and spatial variability. SOC increases by a factor of 10 as particle...
Authors
L.B. Barber
Application of borehole geophysics in the characterization of flow in fractured rocks Application of borehole geophysics in the characterization of flow in fractured rocks
No abstract available.
Authors
Frederick L. Paillet