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: 3784
Geothermal systems Geothermal systems
No abstract available.
Authors
Yousif K. Kharaka, Robert H. Mariner
Modeling ground-water flow and quality Modeling ground-water flow and quality
No abstract available.
Authors
Leonard F. Konikow, Pierre D. Glynn
Aquifer recharge Aquifer recharge
No abstract available.
Authors
John R. Nimmo, Richard W. Healy, David A. Stonestrom
Genus sulfurospirillum Genus sulfurospirillum
No abstract available.
Authors
J.F. Stolz, Ronald S. Oremland, B.J. Paster, F.E. Dewhirst, P. Vandamme
Herbicides and degradates in shallow aquifers of Illinois: Spatial and temporal trends Herbicides and degradates in shallow aquifers of Illinois: Spatial and temporal trends
During the fall of 2000, the occurrence was examined of 16 herbicides and 13 herbicide degradates in samples from 55 wells in shallow aquifers underlying grain producing regions of Illinois. Herbicide compounds with concentrations above 0.05 μg/L were detected in 56 percent of the samples. No concentrations exceeded regulatory drinking water standards. The six most frequently detected...
Authors
P. C. Mills, D.W. Kolpin, E.A. Scribner, E.M. Thurman
Influence of water chemistry and travel distance on bacteriophage PRD-1 transport in a sandy aquifer Influence of water chemistry and travel distance on bacteriophage PRD-1 transport in a sandy aquifer
Experiments were conducted to evaluate the impact of groundwater chemistry and travel distance on the transport and fate behavior of PRD-1, a bacteriophage employed as a surrogate tracer for pathogenic enteric viruses. The experiments were conducted in the unconfined aquifer at the United States Geological Survey Cape Cod Toxic-Substances Hydrology Research Site in Falmouth...
Authors
W.J. Blanford, M.L. Brusseau, T.-C. Jim Yeh, C.P. Gerba, R. Harvey
Radiation pattern of a borehole radar antenna Radiation pattern of a borehole radar antenna
The finite-difference time-domain method was used to simulate radar waves that were generated by a transmitting antenna inside a borehole. The simulations were of four different models that included features such as a water-filled borehole and an antenna with resistive loading. For each model, radiation patterns for the far-field region were calculated. The radiation patterns show that...
Authors
K.J. Ellefsen, D.L. Wright
Trophic transfer of metals along freshwater food webs: Evidence of cadmium biomagnification in nature Trophic transfer of metals along freshwater food webs: Evidence of cadmium biomagnification in nature
We conducted a study with cadmium (Cd) and copper (Cu) in the delta of San Francisco Bay, using nitrogen and carbon stable isotopes to identify trophic position and food web structure. Cadmium is progressively enriched among trophic levels in discrete epiphyte‐based food webs composed of macrophyte‐dwelling invertebrates (the first link being epiphytic algae) and fishes (the first link...
Authors
M.-N. Croteau, S. N. Luoma, A.R. Stewart
Differences in dissolved cadmium and zinc uptake among stream insects: Mechanistic explanations Differences in dissolved cadmium and zinc uptake among stream insects: Mechanistic explanations
This study examined the extent to which dissolved Cd and Zn uptake rates vary in several aquatic insect taxa commonly used as indicators of ecological health. We further attempted to explain the mechanisms underlying observed differences. By comparing dissolved Cd and Zn uptake rates in several aquatic insect species, we demonstrated that species vary widely in these processes. Dissolved...
Authors
D.B. Buchwalter, S. N. Luoma
Herbicide and degradate flux in the Yazoo River Basin Herbicide and degradate flux in the Yazoo River Basin
During 1996-1997, water samples were collected from five sites in the Yazoo River Basin and analysed for 14 herbicides and nine degradates. These included acetochlor, alachlor, atrazine, cyanazine, fluometuron, metolachlor, metribuzin, molinate, norflurazon, prometryn, propanil, propazine, simazine, trifluralin, three degradates of fluometuron, two degradates of atrazine, one degradate...
Authors
R.H. Coupe, H.L. Welch, A.B. Pell, E.M. Thurman
The microbiol ecology and physiology of aryl dehalogenation reactions and implications for bioremediation The microbiol ecology and physiology of aryl dehalogenation reactions and implications for bioremediation
No abstract available.
Authors
J.M. Suflita, G.T. Townsend
Seasonality of diel cycles of dissolved trace-metal concentrations in a Rocky Mountain stream Seasonality of diel cycles of dissolved trace-metal concentrations in a Rocky Mountain stream
Substantial diel (24-h) cycles in dissolved (0.1-μm filtration) metal concentrations were observed during summer low flow, winter low flow, and snowmelt runoff in Prickly Pear Creek, Montana. During seven diel sampling episodes lasting 34–61.5 h, dissolved Mn and Zn concentrations increased from afternoon minimum values to maximum values shortly after sunrise. Dissolved As concentrations...
Authors
D. A. Nimick, T.E. Cleasby, R. Blaine McCleskey