Publications
The following list of California Water Science Center publications includes both official USGS publications and journal articles authored by our scientists.
Filter Total Items: 1831
Pesticides in the atmosphere of the Mississippi River Valley, part II: Air Pesticides in the atmosphere of the Mississippi River Valley, part II: Air
Weekly composite air samples were collected from early April through to mid-September 1995 at three paired urban and agricultural sites along the Mississippi River region of the Midwestern United States. The paired sampling sites were located in Mississippi, Iowa, and Minnesota. A background site, removed from dense urban and agricultural areas, was located on the shore of Lake Superior...
Authors
W.T. Foreman, M.S. Majewski, D. A. Goolsby, F.W. Wiebe, R.H. Coupe
Chlorofluorocarbon dating of herbicide-containing well waters in Fresno and Tulare counties, California Chlorofluorocarbon dating of herbicide-containing well waters in Fresno and Tulare counties, California
Simazine, diuron, and bromacil are the most frequently detected currently registered pesticides in California groundwater. These herbicides have been used for several decades in Fresno and Tulare counties, California; however, previous data are inadequate to determine whether the detections are a result of recent or historical applications (i.e., within the last decade, or 20-30 yr ago)
Authors
F. Spurlock, K. Burow, N. Dubrovsky
Methods for accurate estimation of net discharge in a tidal channel Methods for accurate estimation of net discharge in a tidal channel
Accurate estimates of net residual discharge in tidally affected rivers and estuaries are possible because of recently developed ultrasonic discharge measurement techniques. Previous discharge estimates using conventional mechanical current meters and methods based on stage/discharge relations or water slope measurements often yielded errors that were as great as or greater than the...
Authors
M.R. Simpson, R. Bland
Negative pH and extremely acidic mine waters from Iron Mountain, California Negative pH and extremely acidic mine waters from Iron Mountain, California
Extremely acidic mine waters with pH values as low as -3.6, total dissolved metal concentrations as high as 200 g/L, and sulfate concentrations as high as 760 g/L, have been encountered underground in the Richmond Mine at Iron Mountain, CA. These are the most acidic waters known. The pH measurements were obtained by using the Pitzer method to define pH for calibration of glass membrane...
Authors
D. Kirk Nordstrom, Charles N. Alpers, C.J. Ptacek, D.W. Blowes
Metal exposure in a benthic macroinvertebrate, Hydropsyche californica, related to mine drainage in the Sacramento River Metal exposure in a benthic macroinvertebrate, Hydropsyche californica, related to mine drainage in the Sacramento River
A biomonitoring technique was employed to complement studies of metal transport in the upper Sacramento River affected by acid mine drainage. Metals (Al, Cd, Cu, Fe, Hg, Pb, and Zn) were determined in a resident invertebrate, Hydropsyche californica (Insecta: Trichoptera), and streambed sediments (
Authors
Daniel J. Cain, James L. Carter, Steven V. Fend, Samuel N. Luoma, Charles N. Alpers, Howard E. Taylor
Fish community structure in relation to environmental variables within the Sacramento River basin and implications for the greater Central Valley, California Fish community structure in relation to environmental variables within the Sacramento River basin and implications for the greater Central Valley, California
No abstract available.
Authors
Jason T. May, Larry R. Brown
Aquifer-system compaction and land subsidence: Measurements, analyses, and simulations – The Holly Site, Edwards Air Force Base, Antelope Valley, California Aquifer-system compaction and land subsidence: Measurements, analyses, and simulations – The Holly Site, Edwards Air Force Base, Antelope Valley, California
Land subsidence resulting from ground-water-level declines has long been recognized as a problem in Antelope Valley, California. At Edwards Air Force Base (EAFB), ground-water extractions have caused more than 150 feet of water-level decline, resulting in nearly 4 feet of subsidence. Differential land subsidence has caused sinklike depressions and earth fissures and has accelerated...
Authors
Michelle Sneed, Devin L. Galloway
Summary of suspended-solids concentration data, San Francisco Bay, California, water year 1997 Summary of suspended-solids concentration data, San Francisco Bay, California, water year 1997
No abstract available.
Authors
Paul A. Buchanan, David H. Schoellhamer
Hydrogeology and geochemistry of acid mine drainage in ground water in the vicinity of Penn Mine and Camanche Reservoir, Calaveras County, California: Summary report, 1993–95 Hydrogeology and geochemistry of acid mine drainage in ground water in the vicinity of Penn Mine and Camanche Reservoir, Calaveras County, California: Summary report, 1993–95
No abstract available.
Authors
Charles N. Alpers, S. N. Hamlin, M. P. Hunerlach
Distributions of uronic acids and O-methyl sugars in sinking and sedimentary particles in two coastal marine environments Distributions of uronic acids and O-methyl sugars in sinking and sedimentary particles in two coastal marine environments
Although recent research has indicated that bacteria may contribute an important fraction of biochemical residues in terrestrial and marine environments, it is difficult for geochemists to identify contributions from these ubiquitous and biochemically diverse organisms. Previous studies have suggested uronic acids and O-methyl sugars may be useful indicators of microbial abundance and...
Authors
Brian A. Bergamaschi, Jeffrey S. Walters, J. I. Hedges
The geochemistry of acid mine waters The geochemistry of acid mine waters
No abstract available.
Authors
D. Kirk Nordstrom, Charles N. Alpers
Transport of sediment-bound organochlorine pesticides to the San Joaquin River, California Transport of sediment-bound organochlorine pesticides to the San Joaquin River, California
ABSTRACT: Suspended sediment samples were collected in west-side tributaries and the main stem of the San Joaquin River, California, in June 1994 during the irrigation season and in January 1995 during a winter storm. These samples were analyzed for 15 organochiorine pesticides to determine their occurrence and their concentrations on suspended sediment and to compare transport during...
Authors
C.R. Kratzer