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
Sources and haloacetic acid/trihalomethane formation potentials of aquatic humic substances in the Wakarusa River and Clinton Lake near Lawrence, Kansas Sources and haloacetic acid/trihalomethane formation potentials of aquatic humic substances in the Wakarusa River and Clinton Lake near Lawrence, Kansas
Gram quantities of aquatic humic substances (AHS) were extracted from the Wakarusa River−Clinton Lake Reservoir system, near Lawrence, KS, to support nuclear magnetic resonance (NMR) experimental studies, report concentrations of dissolved organic carbon (DOC) and AHS, define sources of the AHS, and determine if the AHS yield sufficient quantities of haloacetic acids (HAA5) and...
Authors
M.L. Pomes, C.K. Larive, E.M. Thurman, W. R. Green, W. H. Orem, C.E. Rostad, T.B. Coplen, B.J. Cutak, A.M. Dixon
Bioavailability of particle-associated Se to the bivalve Potamocorbula amurensis Bioavailability of particle-associated Se to the bivalve Potamocorbula amurensis
Elemental selenium, Se(0), is a prevalent chemical form in sediments, but little is known about its bioavailability. We evaluated the bioavailability of two forms of Se(0) by generating radioisotopic 75Se(0) through bacterial dissimilatory reduction of 75SeO32- by pure bacterial cultures (SES) and by an anaerobic sediment microbial consortium (SED). A third form was generated by reducing...
Authors
C.E. Schlekat, P.R. Dowdle, B.-G. Lee, S. N. Luoma, R.S. Oremland
VS2DI-A graphical software package for simulating fluid flow and solute or energy transport in variably saturated porous media VS2DI-A graphical software package for simulating fluid flow and solute or energy transport in variably saturated porous media
No abstract available.
Authors
P. A. Hsieh, W.L. Wingle, R. W. Healy
Forecasting selenium discharges to the San Francisco Bay-Delta Estuary: Ecological effects of a proposed San Luis drain extension Forecasting selenium discharges to the San Francisco Bay-Delta Estuary: Ecological effects of a proposed San Luis drain extension
During the next few years, federal and state agencies may be required to evaluate proposals and discharge permits that could significantly change selenium (Se) inputs to the San Francisco Bay-Delta Estuary (Bay-Delta), particularly in the North Bay (i.e., Suisun Bay and San Pablo Bay). These decisions may include discharge requirements for an extension of the San Luis Drain (SLD) to the...
Authors
Samuel N. Luoma, Theresa S. Presser
Chemical and isotopic composition and gas concentrations of ground water and surface water from selected sites at and near the Idaho National Engineering and Environmental Laboratory, Idaho, 1994-97 Chemical and isotopic composition and gas concentrations of ground water and surface water from selected sites at and near the Idaho National Engineering and Environmental Laboratory, Idaho, 1994-97
No abstract available.
Authors
Eurybiades Busenberg, Niel Plummer, M. W. Doughten, P.K. Widman, R. C. Bartholomay
Nitrogen in the Mississippi Basin--Estimating sources and predicting flux to the Gulf of Mexico Nitrogen in the Mississippi Basin--Estimating sources and predicting flux to the Gulf of Mexico
No abstract available.
Authors
Donald A. Goolsby, William A. Battaglin
Quantifying hydrologic interactions between streams and their subsurface hyporheic zones Quantifying hydrologic interactions between streams and their subsurface hyporheic zones
No abstract available.
Authors
Judson W. Harvey, Brian J. Wagner
Graphical user interface for MODFLOW, Version 4 Graphical user interface for MODFLOW, Version 4
No abstract available.
Authors
Richard B. Winston
Metal exposure to a benthic invertebrate, Hydropsyche californica, in the Sacramento River down stream of Keswick Reservoir, California Metal exposure to a benthic invertebrate, Hydropsyche californica, in the Sacramento River down stream of Keswick Reservoir, California
No abstract available.
Authors
Daniel J. Cain, James L. Carter, Steven V. Fend, Samuel N. Luoma, Charles N. Alpers, Howard E. Taylor
Determining timescales for groundwater flow and solute transport Determining timescales for groundwater flow and solute transport
One of the principal uses of environmental tracers is for determining the ages of soil waters and groundwaters. (We may refer to this as ‘hydrochronology’by analogy with the dating of solid materials known as geochronology.) Information on soil water and groundwater age enables timescales for a range of subsurface processes to be determined. For example, ‘groundwater stratigraphy’is used
Authors
Peter G. Cook, J.K. Bohlke
Geochemical investigations by the U.S. Geological Survey on uranium mining, milling, and environmental restoration Geochemical investigations by the U.S. Geological Survey on uranium mining, milling, and environmental restoration
Recent research by the U.S. Geological Survey has characterized contaminant sources and identified important geochemical processes that influence transport of radionuclides from uranium mining and milling wastes. 1) Selective extraction studies indicated that alkaline earth sulfates and hydrous ferric oxides are important hosts of 226Ra in uranium mill tailings. The action of sulfate...
Authors
Edward R. Landa, Charles A. Cravotta, David L. Naftz, Philip L. Verplanck, D. Kirk Nordstrom, Robert A. Zielinski