Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10420
Ground-water data for Georgia, 1988 Ground-water data for Georgia, 1988
Continuous water-level records from 144 wells and water-level measurements from an additional 617 wells in Georgia during 1988 provide the basic data for this report. Daily mean water-level hydrographs for selected wells illustrate the effects that changes ln recharge and discharge have had on the ground-water reservoirs in the State during 1988. Monthly mean water levels are shown for...
Authors
Charles N. Joiner, Michael F. Peck, Mark S. Reynolds, Welby L. Stayton
Horizontal anisotropy of the principal ground-water flow zone in the Salinas alluvial fan, Puerto Rico Horizontal anisotropy of the principal ground-water flow zone in the Salinas alluvial fan, Puerto Rico
Well drawdown data from an anisotropic aquifer in the Salinas alluvial fan were collected and analyzed with a computer program called TENSOR2D. The program uses ordinary and weighted least-squares optimization procedures to solve the system of simultaneous equations needed to define the theoretical transmissivity ellipse. Prediction of drawdown data was made by coupling the anisotropy...
Authors
V. Quinones-Aponte
Microcontaminants and reproductive impairment of the Forster's tern on Green Bay, Lake Michigan,1983 Microcontaminants and reproductive impairment of the Forster's tern on Green Bay, Lake Michigan,1983
For the 1983 nesting season, Forster's tern (Sterna forsteri) reproductive success was significantly impaired on organochlorine contaminated Green Bay, Lake Michigan compared to a relatively uncontaminated inland location at Lake Poygan, Wisconsin. Compared with tern eggs from Lake Poygan, eggs from Green Bay had significantly higher median concentrations of 2,3,7,8-tetrachlorodibenzo-p...
Authors
T.J. Kubiak, H.J. Harris, L.M. Smith, T.R. Schwartz, D.L. Stalling, J.A. Trick, L. Sileo, D. E. Docherty, T.C. Erdman
Use of experimental ecosystems in regulatory decision making Use of experimental ecosystems in regulatory decision making
Tiered testing for the effects of chemicals on aquatic ecosystems has begun to include tests at the ecosystem level as a component in pesticide regristration. Because such tests are expensive, regulators and industry need to know what additional information they can gain from such tests relative to the costs of the simpler single-species toxicity bioassays. Requirements for ecosystem...
Authors
Thomas W. La Point, James A. Perry
Chronic no-observed-effect concentrations of aluminum for brook trout exposed in low-calcium, dilute acidic water Chronic no-observed-effect concentrations of aluminum for brook trout exposed in low-calcium, dilute acidic water
No abstract available.
Authors
L. Cleveland, E. E. Little, Ray H. Wiedmeyer, D.R. Buckler
Alluvial stratigraphy of the Potomac River valley bottom near Petersburg and Moorefield, West Virginia Alluvial stratigraphy of the Potomac River valley bottom near Petersburg and Moorefield, West Virginia
No abstract available.
Authors
R. B. Jacobson, R. C. Linton, Meyer Rubin
Water resources data for Texas, water year 1988, volume 2. San Jacinto River, Brazos River, San Bernard River basins, and intervening coastal basins Water resources data for Texas, water year 1988, volume 2. San Jacinto River, Brazos River, San Bernard River basins, and intervening coastal basins
No abstract available.
Authors
H.D. Buckner, E.R. Carrillo, H.J. Davidson, W.J. Shelby
Acute toxicity of selected herbicides and surfactants to larvae of the midge Chironomus riparius Acute toxicity of selected herbicides and surfactants to larvae of the midge Chironomus riparius
The acute toxicities of eight commercial herbicides and two surfactants to early fourth instar larvae of the midgeChironomus riparius were determined under static conditions. The formulated herbicides tested were Eradicane® (EPTC), Fargo® (triallate), Lasso® (alachlor), ME4 Brominal® (bromoxynil), Ramrod® (propachlor), Rodeo® (glyphosate), Sencor®(metribuzin), and Sutan (+)® (butylate)...
Authors
Kevin J. Buhl, Neil L. Faerber
Analysis of water surface and flow distribution for the design flood at a proposed highway crossing of the Sabine River near Tatum, Texas Analysis of water surface and flow distribution for the design flood at a proposed highway crossing of the Sabine River near Tatum, Texas
The hydraulic effects of the proposed Texas Highway 43 crossing of the Sabine River near Tatum, Texas, were determined on the basis of results from a two-dimensional finite-element surface-water-flow model. In planning the replacement crossing by the Texas State Department of Highways and Public Transportation, approximations of apportionment of flow among the openings and velocities...
Authors
J. J. Gilbert, D.R. Myers
Approximate water-level changes in wells completed in the Chicot and Evangeline aquifers, 1977-89 and 1988-89, and measured compaction, 1973-89, in the Houston-Galveston region, Texas Approximate water-level changes in wells completed in the Chicot and Evangeline aquifers, 1977-89 and 1988-89, and measured compaction, 1973-89, in the Houston-Galveston region, Texas
This report presents data on water-level changes in the Chinot and Evangeline aquifers during 1977-89 and 1988-89 and data on measured compaction during 1973-89. Measurements of water level in 307 wells were used to construct the maps showing water-level changes. Compaction data were obtained from 12 wells equipped with compaction monitors at 11 sites.
Authors
Dana L. Barbie, L.S. Coplin, C.W. Bonnet
Ground-water-quality-monitoring program in Iowa: Nitrate and pesticides in shallow aquifers Ground-water-quality-monitoring program in Iowa: Nitrate and pesticides in shallow aquifers
Concern exists about the occurrence of agricultural chemicals, primarily nitrate and pesticides, in shallow ground water. In response to this concern, the focus of the Iowa ground-water-quality-monitoring program has shifted to emphasize nonpoint contaminants. The program, which began in 1982, is operated by the U.S. Geological Survey in cooperation with the University of Iowa Hygienic...
Authors
M.G. Detroy, P.K. Hunt, M.A. Holub