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: 4095
A dual drawworks controller for borehole tomography A dual drawworks controller for borehole tomography
No abstract available.
Authors
T.P. Grover, R.P. Kipfinger, D.L. Wright
Effects of recharge on the transport of agricultural chemicals at the Princeton, Minn. Management Systems Evaluation Area (MSEA), 1991-92 Effects of recharge on the transport of agricultural chemicals at the Princeton, Minn. Management Systems Evaluation Area (MSEA), 1991-92
Rates of water movement through the unsaturated zone greatly affect the amount and concentrations of agricultural chemicals that may reach the water table. For example, recharge can flush to the water table chemicals that have accumulated In the unsaturated zone during dry periods. A better understanding of how topography influences recharge and the movement of agricultural chemicals is...
Authors
G. N. Delin, M.K. Landon
Application of borehole geophysics in defining the wellhead protection area for a fractured crystalline bedrock aquifer Application of borehole geophysics in defining the wellhead protection area for a fractured crystalline bedrock aquifer
Wellbore geophysical techniques were used to characterize fractures and flow in a bedrock aquifer at a site near Blackwater Brook in Dover, New Hampshire. The primary focus ofthis study was the development of a model to assist in evaluating the area surrounding a planned water supply well where contaminants introduced at the land surface might be induced to flow towards a pumping well...
Authors
J.H. Vernon, F.L. Paillet, W.H. Pedler, W.J. Griswold
Model for humus in soils and sediments Model for humus in soils and sediments
No abstract available.
Authors
R.L. Wershaw
Coupling solid-phase extraction and enzyme-linked immunosorbent assay for ultratrace determination of herbicides in pristine water Coupling solid-phase extraction and enzyme-linked immunosorbent assay for ultratrace determination of herbicides in pristine water
No abstract available.
Authors
D.S. Aga, E.M. Thurman
Atrazine degradation in a small stream in Iowa Atrazine degradation in a small stream in Iowa
A study was conducted during 1990 through an 11.2-km reach of Roberts Creek in northeastern Iowa to determine the fate of atrazine in a surface water environment Water samples were collected at ~1-month intervals from April through November during stable low to medium flow conditions and analyzed for atrazine and two of its initial biotic degradation products, desethylatrazine and
Authors
D.W. Kolpin, S. J. Kalkhoff
Trace contaminants and nutrients in estuaries: The importance of process interdependence Trace contaminants and nutrients in estuaries: The importance of process interdependence
No abstract available.
Authors
J.S. Kuwabara, J.E. Baker
Evaluation of statistical models to predict chemical quality of shallow ground water in the Pine Barrens of Suffolk County, Long Island, New York Evaluation of statistical models to predict chemical quality of shallow ground water in the Pine Barrens of Suffolk County, Long Island, New York
No abstract available.
Authors
P. E. Stackelberg, S. F. Siwiec
Occurrence and transport of agricultural chemicals in the Mississippi River basin, July through August 1993 Occurrence and transport of agricultural chemicals in the Mississippi River basin, July through August 1993
Heavy rainfall and severe flooding in the upper Mississippi River Basin from mid-June through early August 1993 flushed extraordinarily large amounts of agricultural chemicals (herbicides and nitrate) into the Mississippi River, many of its tributaries, and, ultimately, the Gulf of Mexico. Even though extremely high streamflows were recorded during the flood in 1993, concentrations of...
Authors
Donald A. Goolsby, William A. Battaglin, E. Michael Thurman
Ground-water quality at the Management Systems Evaluation Area near Princeton, Minnesota, 1991-92 Ground-water quality at the Management Systems Evaluation Area near Princeton, Minnesota, 1991-92
The northern cornbelt sand-plains Management Systems Evaluation Area (MSEA) program is a multiagency, multistate initiative to evaluate the effects of modified and prevailing farming systems on water quality in a sand-plain area in Minnesota and at satellite areas in North and South Dakota, and Wisconsin. The primary objective of Minnesota MSEA is to evaluate the effects of ridge-tillage...
Authors
Matthew K. Landon, Geoffrey N. Delin, J.A. Lamb, Lei Guo
Geophysical logging studies in the Snake River Plain Aquifer at the Idaho National Engineering Laboratory — Wells 44, 45, and 46 Geophysical logging studies in the Snake River Plain Aquifer at the Idaho National Engineering Laboratory — Wells 44, 45, and 46
No abstract available.
Authors
R. H. Morin, Warren Barrash, Frederick L. Paillet, T. A. Taylor
Effect of treated-sewage contamination upon bacterial energy charge, adenine nucleotides, and DNA content in a sandy aquifer on Cape Cod Effect of treated-sewage contamination upon bacterial energy charge, adenine nucleotides, and DNA content in a sandy aquifer on Cape Cod
Changes in adenylate energy charge (ECA) and in total adenine nucleotides (AT) and DNA content (both normalized to the abundance of free-living, groundwater bacteria) in response to carbon loading were determined for a laboratory-grown culture and for a contaminated aquifer. The latter study involved a 3-km-long transect through a contaminant plume resulting from continued on-land...
Authors
David W. Metge, Myron H. Brooks, Richard L. Smith, Ronald W. Harvey