Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10386
Hydrogeology and the distribution and origin of salinity in the Floridan aquifer system, southeastern Florida Hydrogeology and the distribution and origin of salinity in the Floridan aquifer system, southeastern Florida
The Floridan aquifer system in southeastern Florida consists of the Upper Floridan aquifer, the middle confining unit, and the Lower Floridan aquifer. An upper zone of brackish water and a lower zone of water with a salinity similar to that of seawater are present in the Floridan aquifer system. The brackish-water zone is defined as that in which water has a dissolved-solids...
Authors
Ronald S. Reese
National Water-Quality Assessment Program— Eastern Iowa basins National Water-Quality Assessment Program— Eastern Iowa basins
No abstract available.
Authors
Stephen J. Kalkhoff
Hydrogeologic framework and simulation of shallow ground-water flow in the vicinity of a hazardous-waste landfill near Pinewood, South Carolina Hydrogeologic framework and simulation of shallow ground-water flow in the vicinity of a hazardous-waste landfill near Pinewood, South Carolina
The geologic units in the vicinity of a hazardous- waste landfill near Pinewood, S.C., were divided into hydrogeologic units on the basis of lithologic and hydrologic characteristics. A quasi-3- dimensional finite-difference ground-water-flow model was constructed to represent the hydrogeologic flamework. The simulation results indicate that if non-reactive constituents were released to...
Authors
D.A. Vroblesky
National Water Quality Assessment Program; the Santee Basin and coastal drainage, North Carolina and South Carolina National Water Quality Assessment Program; the Santee Basin and coastal drainage, North Carolina and South Carolina
In 1991, the U.S. Geological Survey (USGS), U.S. Department of the Interior, began a National Water-Quality Assessment Program (NAWQA). The long-term goals of NAWQA are to describe the status of and trends in the quality of a large representative part of the Nation's surface- and ground-water resources and to identify all the major factors that affect the quality of these resources. In...
Authors
W. Brian Hughes
Water-quality data from continuously monitored sites in the Pamlico and Neuse River estuaries, North Carolina, 1991-92 Water-quality data from continuously monitored sites in the Pamlico and Neuse River estuaries, North Carolina, 1991-92
Water-quality measurements were made at six sites in or near North Carolina?s Pamlico River estuary and at five sites in or near the Neuse River estuary. Measurements taken at 15-minute intervals included near-surface and near-bottom specific conductance; near-surface water temperature; and near-surface, mid-depth, and near-bottom dissolved-oxygen concentrations. In the Pamlico River...
Authors
R. G. Garrett
Toxicity of metal-contaminated sediments from the upper Clark Fork River, Montana, to aquatic invertebrates and fish in laboratory exposures Toxicity of metal-contaminated sediments from the upper Clark Fork River, Montana, to aquatic invertebrates and fish in laboratory exposures
Sediments of the upper Clark Fork River, from the Butte and Anaconda area to Milltown Reservoir (230 km downstream), are contaminated with As, Cd, Cu, Pb, Mn, and Zn primarily from mining activities. The toxicity of pore water from these sediments was determined using Daphnia magna (48-h exposure), rainbow trout (96-h exposure), and Microtox®. However, pore-water data from these...
Authors
Nile E. Kemble, William G. Brumbaugh, Eric L. Brunson, F. James Dwyer, Christopher G. Ingersoll, Dave P. Monda, Daniel F. Woodward
Use of benthic invertebrate community structure and the sediment quality triad to evaluate metal-contaminated sediment in the upper Clark Fork River, Montana Use of benthic invertebrate community structure and the sediment quality triad to evaluate metal-contaminated sediment in the upper Clark Fork River, Montana
The upper Clark Fork River, above Flathead River, is contaminated with large amounts of As, Cd, Cu, Pb, Mn, and Zn ores from past mining activities. The contaminated area extends from the Butte and Anaconda area to at least 230 km downstream to Milltown Reservoir. Both the upper Clark Fork River and Milltown Reservoir have been designated as U.S. Environmental Protection Agency Superfund...
Authors
Timothy J. Canfield, Nile E. Kemble, William G. Brumbaugh, F. James Dwyer, Christopher G. Ingersoll, James F. Fairchild
Hydrologic processes controlling sulfate mobility in a small forested watershed Hydrologic processes controlling sulfate mobility in a small forested watershed
Hydrologic controls on sulfate mobility were investigated in a forested catchment in the Georgia Piedmont using a watershed mass balance approach. Variations in annual sulfate export were governed primarily by differences in runoff rather than by differences in sulfate deposition or in total annual precipitation. However, 2 years with similar total runoff had substantially different...
Authors
Thomas G. Huntington, R. P. Hooper, Brent T. Aulenbach
Relation among cytochrome P450, AH-active PCB congeners and dioxin equivalents in pipping black-crowned night-heron embryos Relation among cytochrome P450, AH-active PCB congeners and dioxin equivalents in pipping black-crowned night-heron embryos
Pipping black-crowned night-heron (Nycticorax nycticorax) embryos were collected from a relatively uncontaminated site (next to Chincoteague National Wildlife Refuge, VA) and three polluted sites (Cat Island, Green Bay, Lake Michigan, WI; Bair Island, San Francisco Bay, CA; West Marin Island, San Francisco Bay, CA). Hepatic cytochrome P-450-associated monooxygenases and cytochrome P-450...
Authors
Barnett A. Rattner, Jeff S. Hatfield, M. J. Melancon, T. W. Custer, D. E. Tillitt
Drift fences encircling breeding sites Drift fences encircling breeding sites
Abstract not supplied at this time
Authors
C.K. Dodd, D.E. Scott
Fire patterns in the southern Everglades Fire patterns in the southern Everglades
Abstract not supplied at this time
Authors
L.H. Gunderson, J.R. Snyder