Publications
Dive into our publications and explore the science from the Environmental Health Program (Toxic Substances Hydrology and Contaminant Biology).
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Pathway models could aid management of contaminants
Heavy metal and trace organic contaminants are often cited as factors that could affect the riclmess of the biological community of San Francisco Bay as well as the health of resident organisms. Silver (Ag), selenium (Se), mercury (Hg), copper (Cu), nickel (Ni), chromium (Cr), and cadmium (Cd) are among the trace elements of current regulatory interest. All these elements can be toxic to estuarine
Authors
S. N. Luoma
Modeling and predicting intertidal variations of the salinity field in the Bay/Delta
San Francisco Bay and the Sacramento/San Joaquin Delta have challenged estuarine modelers for some years. Accurate, broad-scale models of this estuary have been in demand by those concerned with its ecological health and the development of sound management policies. A description and better understanding of the dynamics that govern the bay/delta are complicated by the system's complexity, requir
Authors
Noah Knowles, Reginald J. Uncles
Geophysical log data from Basalt Aquifers near Waipahu on the Island of Oahu and Pahoa on the Island of Hawaii, Hawaii
Two relatively new geophysical logging techniques, the digitally enhanced borehole acoustic televiewer and the heat-pulse flowmeter, were tested from 1987 to 1991 at two sites in Hawaii: Waipahu on the island of Oahu, and Pahoa on the island of Hawaii. Although these data were obtained in an effort to test and improve these two logging techniques, the measurements are of interest to hydrologists s
Authors
Frederick L. Paillet, Alfred E. Hess
Ground-water quality in agricultural areas, Anoka Sand Plain Aquifer, east-central Minnesota, 1984-90
Ground-water quality in the Anoka Sand Plain aquifer was studied as part of the multiscale Management Systems Evaluation Area (MSEA) study by collecting water samples from shallow wells during August through November 1990. The sampling was conducted to: (1) aid in selection of the MSEA research area; (2) facilitate comparison of results at the MSEA research area to the regional scale; and (3) eval
Authors
M.K. Landon, G. N. Delin
Hydrogeology and water quality at the management systems evaluation area near Piketon, Ohio
This report presents the results of a study by the U.S. Geological Survey, The Ohio State University, and the U.S. Department of Agriculture to describe the hydrology, water quality, and geochemical factors controlling water quality at the Ohio Management Systems Evaluation Area (MSEA). The Ohio MSEA is located on a 650-acre farm in the Scioto River Valley in Pike County, south-central Ohio. The f
Authors
Martha L. Jagucki, Christopher D. Finton, Abraham E. Springer, E. Scott Bair
Tritium and radioactive carbon (14C) analyses of gas collected from unsaturated sediments next to a low-level radioactive-waste burial site south of Beatty, Nevada, April 1994 and July 1995
Tritium activities in water vapor and radioactive carbon (14C) activities in carbon dioxide were determined in gas samples pumped from small-diameter air ports installed in a test hole within the unsaturated sediments next to a commercial burial site for low-level radioactive waste south of Beatty, Nevada. In April 1994, gas samples were collected from test hole UZB-2, which was drilled about 350
Authors
David E. Prudic, Robert G. Striegl
Effects of 1992 farming systems on ground-water quality at the management systems evaluation area near Princeton, Minnesota
The Management Systems Evaluation Area (MSEA) program was a multiscale, interagency initiative to evaluate the effects of agricultural systems on water quality in the midwest corn belt. The primary objective of the Minnesota MSEA was to evaluate the effects of ridge-tillage practices in a corn and soybean farming system on ground-water quality. The 65-hectare Minnesota MSEA was located in the Anok
Authors
G. N. Delin, M.K. Landon, J.A. Lamb, R.H. Dowdy
Results of geophysical investigations near the Norman, Oklahoma, Municipal Landfill, 1995
No abstract available.
Authors
J.E. Lucius, R.J. Bisdorf
Preliminary compilation of descriptive geoenvironmental mineral deposit models
Summary: This book was released in paper form in June, 1996. After its release, it was converted to digital form as Adobe Acrobat (.pdf) files using Acrobat version 2.1. The Acrobat presentation you are accessing is a facsimile of the published book. A few minor editorial changes were made to the book to correct errors and some of the figures have been enhanced. The figures are the same as those
Authors
Edward A. du Bray
Concentration and transport data for dissolved inorganic constituents in water collected during seven cruises on the Mississippi River and some of its tributaries, July 1987-June 1990
No abstract available.
Authors
T.I. Brinton, J.R. Barbarino, D.B. Peartt, Howard E. Taylor, Ronald C. Antweiler
Measurements of evapotranspiration, surface-energy fluxes, weather variables, and water-table depths in the closed basin of the San Luis Valley, Alamosa County, Colorado, 1985-88
No abstract available.
Authors
D.I. Stannard, H. L. Weaver
Mercury contamination of aquatic ecosystems
Mercury has been well known as an environmental pollutant for several decades. As early as the 1950's it was established that emissions of mercury to the environment could have serious effects on human health. These early studies demonstrated that fish and other wildlife from various ecosystems commonly attain mercury levels of toxicological concern when directly affected by mercury-containing emi
Authors
David P. Krabbenhoft, David A. Rickert