Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9969
National Water-Quality Assessment Program - South-Central Texas
In 1991, the U.S. Geological Survey (USGS), Department of the Interior, began a National Water-Quality Assessment (NAWQA) Program. The long-term goals of the NAWQA Program 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 the major natural and human factors that affect the quality of these res
Authors
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
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 the Lang S
Authors
D. A. Vroblesky
Description and application of capture zone delineation for a wellfield at Hilton Head Island, South Carolina
Ground-water capture zone boundaries for individual pumped wells in a confined aquffer were delineated by using groundwater models. Both analytical and numerical (semi-analytical) models that more accurately represent the $round-water-flow system were used. All models delineated 2-dimensional boundaries (capture zones) that represent the areal extent of groundwater contribution to a pumped well. T
Authors
J. E. Landmeyer
Hydrogeology and selected water-quality aspects of the Hueco Bolson Aquifer at the Hueco Bolson Recharge Project area, El Paso, Texas
Samples of ground water and tertiary-treated water were evaluated to determine the distribution of injected water and trihalomethane compounds in the Hueco bolson aquifer near El Paso, Texas. Chloride and nitrate concentrations and oxygen-18/oxygen-16 (δ18O) values were used with end-member mixing analysis to estimate the fractional contributions of injected water, irrigation-affected water, salin
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P.M. Buszka, R.D. Brock, R. P. Hooper
Water-resources data for the Valdosta area, south-central Georgia, 1961-93
The Upper Floridan aquifer is the sole source of water supply for the city of Valdosta, Ga., and much of the surrounding area. Users and water-resources managers and developers are concerned about the quality of water in the aquifer. The water quality of a large part of the Upper Floridan aquifer in the Valdosta area is affected by direct recharge of water from the Withlacoochee River to the aquif
Authors
James B. McConnell, Eurybiades Busenberg, Niel Plummer
National Water-Quality Assessment Program; the Kanawha-New River Basin, West Virginia, Virginia, and North Carolina
No abstract available.
Authors
James H. Eychaner
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 addressing
Authors
W. Brian Hughes
Estimated freshwater withdrawals in Texas, 1990
This report presents 1990 freshwater withdrawal estimates for Texas by source and category. Withdrawal source is either ground water or surface water. Withdrawal categories include: self-supplied irrigation, thermoelectric-power generation, water supply, industrial and mining, and other (domestic, commercial, livestock). Withdrawal data are aggregated by county, major aquifer, and principal river
Authors
Dee L. Lurry
Regional hydrology and simulation of deep ground-water flow in the Southeastern Coastal Plain aquifer system in Mississippi, Alabama, Georgia, and South Carolina
The Southeastern Coastal Plain aquifer system is a coastward-sloping, wedge-shaped sand and gravel reservoir exposed in outcrop to a humid climate and drained by an extensive surface-water network. Ground-water pumpage has increased to about 765 cubic feet per second since 1900, causing water-level declines of more than 150 feet in places, while base flow to major streams has decreased about 350 c
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R.A. Barker, Maribeth Pernik
Sediment characteristics and sedimentation rates in Lake Michie, Durham County, North Carolina, 1990-92
A reservoir sedimentation study was conducted at 508-acre Lake Michie, a municipal water-supply reservoir in northeastern Durham County, North Carolina, during 1990-92. The effects of sedimentation in Lake Michie were investigated, and current and historical rates of sedimentation were evaluated.
Particle-size distributions of lake-bottom sediment indicate that, overall, Lake Michie is rich in
Authors
J.C. Weaver
Dissolved-solids concentrations and hydrochemical facies in water of the Edwards-Trinity aquifer system, west-central Texas
Much of the Edwards-Trinity aquifer system contains freshwater, but sizable parts contain marginally fresh or slightly saline water. The predominant water type in the aquifer system is calcium bicarbonate; however, one of seven other hydrochemical facies characterizes the water in places. The median dissolved-solids concentration of water samples from the Edwards aquifer in the Balcones fault zone
Authors
Peter W. Bush, Randy L. Ulery, Rochelle L. Rittmaster