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: 3740
Use of 13C NMR and FTIR for elucidation of degradation pathways during natural litter decomposition and compositing. III. Characterization of leachate from different types of leaves
No abstract available.
Authors
Robert L. Wershaw, J. A. Leenheer, K. R. Kennedy
Isotopes as indicators of environmental change
In addition to providing an understanding of processes within a catchment system, isotopic techniques have been instrumental in providing reconstructions of catchment climate and other environmental indicators at various time scales. Many recent changes are a direct consequence of anthropogenic activities. Isotopic analysis serves as a valuable tool for distinguishing between natural variations in
Authors
James B. Shanley, Elise Pendall, Carol Kendall, Lora R. Stevens, Robert L. Michel, Patrick J. Phillips, Richard Forester, David L. Naftz, Beiling Liu, Libby Stern, Brent B. Wolfe, C. Page Chamberlain, Steven W. Leavitt, T. H. Heaton, Bernhard Mayer, L. DeWayne Cecil, W. Berry Lyons, Brian G. Katz, Julio L. Betancourt, Diane M. McKnight, Joel D. Blum, Thomas W.D. Edwards, Harold R. House, Emi Ito, Ramon O. Aravena, Joseph F. Whelan
Using transport model interpretations of tracer tests to study microbial processes in groundwater
It has long been known that microorganisms affect the geochemistry of groundwater. But despite this recognition, little detailed information is available regarding the rates and the factors controlling microbial processes in groundwater. Part of the reason stems from the relatively inaccessible nature of most groundwater and the difficulties encountered in obtaining representative samples of groun
Authors
Richard L. Smith, Stephen P. Garabedian
Oxygen isotopes of dissolved sulfate as a tool to distinguish natural and mining-related dissolved constituents
Natural and mining-related dissolved-constituent concentrations need to be distinguished in a watershed affected by abandoned mines to prioritize subbasins for remediation and to assist with the establishmentof water-quality standards. The oxygen isotopes of dissolved sulfate can be used to distinguish between natural and mining-related sources of dissolved constituents. Several methods employing
Authors
Winfield G. Wright, D. Kirk Nordstrom
Methyl tert-butyl ether (MTBE) and other volatile organic compounds in lakes in Byram Township, Sussex County, New Jersey, summer 1998
Water samples were collected from four lakes in Byram Township, Sussex County, N.J., in the summer of 1998 as part of an investigation of the occurrence of volatile organic compounds (VOCs) in domestic wells of lakeside communities. Cranberry Lake and Lake Lackawanna are surrounded by densely populated communities where the use of gasoline-powered watercraft is prevalent, and water is supplied by
Authors
Arthur L. Baehr, Otto S. Zapecza
Science for watershed decisions on abandoned mine lands; review of preliminary results, Denver, Colorado, February 4-5, 1998
From the Preface: There are thousands of abandoned or inactive mines on or adjacent to public lands administered by the U.S. Forest Service, Bureau of Land Management, and National Park Service. Mine wastes from many of these abandoned mines adversely affect resources on public lands. In 1995, an interdepartmental work group within the Federal government developed a strategy to address remediation
Authors
David A. Nimick, Paul Von Guerard
Water quality in the Willamette Basin, Oregon, 1991-95
This report is intended to summarize major findings that emerged between 1991 and 1995 from the water-quality assessment of the Willamette Basin Study Unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in water-resource management. Yet, the information contained here may also interest those wh
Authors
Dennis A. Wentz, Bernadine A. Bonn, Kurt D. Carpenter, Stephen R. Hinkle, Mary L. Janet, Frank A. Rinella, Mark A. Uhrich, Ian R. Waite, Antonius Laenen, Kenneth E. Bencala
A reconnaissance for sulfonylurea herbicides in waters of the Midwestern USA: An example of collaboration between the public and private sectors
No abstract available.
Authors
William A. Battaglin, Edward T. Furlong, Carl John Peter
Application of nonlinear-regression methods to a ground-water flow model of the Albuquerque Basin, New Mexico
This report documents the application of nonlinear-regression methods
to a numerical model of ground-water flow in the Albuquerque Basin,
New Mexico. In the Albuquerque Basin, ground water is the primary source
for most water uses. Ground-water withdrawal has steadily increased
since the 1940's, resulting in large declines in water levels in the
Albuquerque area. A ground-water flow mode
Authors
C. R. Tiedeman, J. M. Kernodle, D. P. McAda
An implicit dispersive transport algorithm for the US Geological Survey MOC3D solute-transport model
This report documents an extension to the U.S. Geological Survey MOC3D transport model that incorporates an implicit-in-time difference approximation for the dispersive transport equation, including source/sink terms. The original MOC3D transport model (Version 1) uses the method of characteristics to solve the transport equation on the basis of the velocity field. The original MOC3D solution algo
Authors
K.L. Kipp, Leonard F. Konikow, G.Z. Hornberger
Lithology and fracture characterization from drilling investigations in the Mirror Lake area, Grafton County, New Hampshire
The lithology and fracture network of the bedrock aquifer in the Mirror Lake area were characterized from hydrogeologic data collected from 1979-95 in Grafton County, N.H. The collection of these data is an integral part of an ongoing multidisciplinary study by the U.S. Geological Survey to characterize groundwater flow and solute transport in fractured rock. The data provide a physical framework
Authors
C. D. Johnson, A.H. Dunstan
Crosswell seismic tomography at the USGS fractured rock research site data collection, data processing, and tomograms
No abstract available.
Authors
K.J. Ellefson, J. E. Kibler, P. A. Hsieh, A.M. Shapiro