Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10352
Demonstration-site development and phytoremediation processes associated with trichloroethene (TCE) in ground water, Naval Air Station-Joint Reserve Base Carswell Field, Fort Worth, Texas Demonstration-site development and phytoremediation processes associated with trichloroethene (TCE) in ground water, Naval Air Station-Joint Reserve Base Carswell Field, Fort Worth, Texas
A field-scale phytoremediation demonstration study was initiated in 1996 by the U.S. Geological Survey (USGS), in cooperation with the U.S. Air Force, at a site on Naval Air StationJoint Reserve Base Carswell Field (NAS–JRB) adjacent to Air Force Plant 4 (AFP4) in Fort Worth, Tex. (fig. 1). Trichloroethene (TCE) has been used at AFP4 in aircraft manufacturing processes for decades...
Authors
Sachin D. Shah, Christopher L. Braun
Degradates provide insight to spatial and temporal trends of herbicides in ground water Degradates provide insight to spatial and temporal trends of herbicides in ground water
Since 1995, a network of municipal wells in Iowa, representing all major aquifer types (alluvial, bedrock/karst region, glacial drift, bedrock/nonkarst region), has been repeatedly sampled for a broad suite of herbicide compounds yielding one of the most comprehensive statewide databases of such compounds currently available in the United States. This dataset is ideal for documenting the...
Authors
D.W. Kolpin, D.J. Schnoebelen, E.M. Thurman
Important observations and parameters for a salt water intrusion model Important observations and parameters for a salt water intrusion model
Sensitivity analysis with a density-dependent ground water flow simulator can provide insight and understanding of salt water intrusion calibration problems far beyond what is possible through intuitive analysis alone. Five simple experimental simulations presented here demonstrate this point. Results show that dispersivity is a very important parameter for reproducing a steady-state...
Authors
W.B. Shoemaker
Use of qualitative and quantitative information in neural networks for assessing agricultural chemical contamination of domestic wells Use of qualitative and quantitative information in neural networks for assessing agricultural chemical contamination of domestic wells
A neural network analysis of agrichemical occurrence in groundwater was conducted using data from a pilot study of 192 small-diameter drilled and driven wells and 115 dug and bored wells in Illinois, a regional reconnaissance network of 303 wells across 12 Midwestern states, and a study of 687 domestic wells across Iowa. Potential factors contributing to well contamination (e.g., depth...
Authors
A. Mishra, C. Ray, D.W. Kolpin
Cattle grazing and its long-term effects on sedge meadows Cattle grazing and its long-term effects on sedge meadows
Most people think that wetlands are temporary, that they fill in by natural processes, and eventually become dry land. Some of these outdated ideas have come from the way that this subject has been covered in introductory textbooks in schools (Gibson, 1996). From these texts, we learned incorrectly that over time a lake fills with sediment or organic matter to become a wetland, which...
Authors
Beth Middleton
User interface for ATLSS models User interface for ATLSS models
No abstract available.
Authors
Water Resources Division U.S. Geological Survey
Water: Essential resource of the southern Flint River Basin, Georgia Water: Essential resource of the southern Flint River Basin, Georgia
Introduction Abundant water resources of the Flint River Basin have played a major role in the history and development of southwestern Georgia. The Flint River-along with its tributaries, wetlands, and swamps-and the productive aquifers of the river basin are essential components of the area's diverse ecosystems. These resources also are necessary for sustained agricultural, industrial...
Authors
Debbie Warner, Virgil Norton
American alligator ecology and monitoring for the Comprehensive Everglades Restoration Plan American alligator ecology and monitoring for the Comprehensive Everglades Restoration Plan
No abstract available at this time
Authors
Kenneth G. Rice, Frank Mazzotti
Snakeheads (Pisces, Channidae): A biological synopsis and risk assessment Snakeheads (Pisces, Channidae): A biological synopsis and risk assessment
Snakeheads (family Channidae) are airbreathing freshwater fishes containing two genera, Channa with 26 species native to Asia, Malaysia, and Indonesia; and Parachanna with 3 species native to tropical Africa. Some snakeheads are small, reaching about 17 centimeters, but most are much larger, the largest reported to be 1.8 meters in length. All are considered thrust predators with most...
Authors
Walter R. Courtenay, James D. Williams
Concentrations of polycyclic aromatic hydrocarbons (PAHs) and major and trace elements in simulated rainfall runoff from parking lots, Austin, Texas, 2003 Concentrations of polycyclic aromatic hydrocarbons (PAHs) and major and trace elements in simulated rainfall runoff from parking lots, Austin, Texas, 2003
Samples of creek bed sediment collected near seal-coated parking lots in Austin, Texas, by the City of Austin during 2001–02 had unusually elevated concentrations of polycyclic aromatic hydrocarbons (PAHs). To investigate the possibility that PAHs from seal-coated parking lots might be transported to urban creeks, the U.S. Geological Survey, in cooperation with the City of Austin...
Authors
Barbara Mahler, Peter C. Van Metre, Jennifer T. Wilson
Water Resources Data, Georgia, 2003, Volume 2: Continuous ground-water-level data, and periodic surface-water- and ground-water-quality data, Calendar Year 2003 Water Resources Data, Georgia, 2003, Volume 2: Continuous ground-water-level data, and periodic surface-water- and ground-water-quality data, Calendar Year 2003
No abstract available.
Authors
Robert Coffin, Susan C. Grams, David C. Leeth, Michael F. Peck