Hydrogeologic investigations at the Nevada Test Site
W.L. Hawkins, D. A. Trudeau, S.L. Drellack
1993, Book chapter, Hydrogeologic investigation, evaluation, and ground water modeling
No abstract available...
Using a GIS to link digital spatial data and the precipitation-runoff modeling system, Gunnison River Basin, Colorado
William A. Battaglin, Gerhard Kuhn, Randolph S. Parker
1993, Conference Paper, Proceedings of the Second international conference/workshop on Integrating geographic information systems and environmental modeling
The U.S. Geological Survey Precipitation-Runoff Modeling System, a modular, distributed-parameter, watershed-modeling system, is being applied to 20 smaller watersheds within the Gunnison River basin. The model is used to derive a daily water balance for subareas in a watershed, ultimately...
Use of geophysical data to assess scour development
Gary Placzek, Peter F. Haeni, Roy Trent
Shen Hsieh WenSu S.T.Wen Feng, editor(s)
1993, Conference Paper, Proceedings - National Conference on Hydraulic Engineering
The development of scour holes in the Connecticut River near the new Baldwin Bridge has been documented by comparing geophysical records collected before (1989), during (1990), and after (1992) bridge construction. Eight piers that support the 570-m (meter) span over the Connecticut River were protected by 12-m wide cofferdams during...
A comparison of water quality criteria for the Great Lakes based on human and wildlife health
James P. Ludwig, John P. Giesy, Cheryl L. Summer, William Bowerman, Richard J. Aulerich, Steven J. Bursian, Heidi J. Auman, Paul D. Jones, Lisa L. Williams, Donald E. Tillitt, Michael Gilbertson
1993, Journal of Great Lakes Research (19) 789-807
Water quality criteria (WQC) can be derived in several ways. The usual techniques involve hazard and risk assessment procedures. For non-persistent, non-biomagnified compounds and elements, WQC are experimentally derived from their acute and chronic toxicity to aquatic organisms. For those persistent chlorinated hydrocarbons (PCHs) that are bioaccumulated and biomagnified, these...
Acute toxicity of the herbicide bromoxynil to Daphnia magna
Kevin J. Buhl, Steven J. Hamilton, James C. Schmulbach
1993, Environmental Toxicology and Chemistry (12) 1455-1468
The acute toxicities of technical-grade bromoxynil octanoate (BO) and two commercial formulations, Buctril® and Bronate®, to < 24-h-old neonate Daphnia magna (Straus) were determined in soft, hard, and oligosaline water. In addition, effects of life stage, feeding, aging the herbicide, and exposure duration on BO toxicity to daphnids were investigated....
Long-term ecological research in Loch Vale Watershed, Rocky Mountain National Park. 1993 Annual report to National Park Service.
Jill Baron, B. Newkirk, M. Welker, M. Wotawa
1993, Report
No abstract available....
Continuous flow measurements using fixed ultrasonic meters
Rick Oltmann
1993, Interagency Ecological Program Newsletter (Summer 1993) 4-4
USGS has or soon will be installing four continuous flow-monitoring stations in the delta that will use ultrasonic velocity meters (DVM). Funding for the stations has been provided by USGS, DWR, USBR, and Contra Costa Water District....
Caspian tern reproduction in the Saginaw Bay ecosystem following a 100-year flood event
James P. Ludwig, Heidi J. Auman, Hiroko Kurita, Matthew E. Ludwig, Loraine M. Campbell, John P. Giesy, Donald E. Tillitt, Paul Jones, Nobu Yamashita, Shinsuke Tanabe, Ryo Tatsukawa
1993, Journal of Great Lakes Research (19) 96-108
In the 2 years that followed the 100-year flood incident of September 1986 in the Saginaw River/Bay ecosystem, the reproduction of Caspian terns collapsed and then slowly recovered. Egg viability and fledging rates of hatched chicks were drastically depressed in 1987 and 1988. Eggs from clutches laid later in the...
Determination of dissolved-phase pesticides in surface water from the Yakima River basin, Washington, using the Goulden large-sample extractor and gas chromatography/mass spectrometer
Gregory D. Foster, Paul M. Gates, William T. Foreman, Stuart W. McKenzie, Frank A. Rinella
1993, Environmental Science & Technology (27) 1911-1917
Concentrations of pesticides in the dissolved phase of surface water samples from the Yakima River basin, WA, were determined using preconcentration in the Goulden large-sample extractor (GLSE) and gas chromatography/mass spectrometry (GC/MS) analysis. Sample volumes ranging from 10 to 120 L were processed with the GLSE, and the results from...
Influence of long term climate change on net infiltration at Yucca Mountain, Nevada
Alan I. Flint, Lorraine E. Flint, Joseph Hevesi
1993, Conference Paper, High Level Radioactive Waste Management
Net infiltration and recharge at Yucca Mountain, Nevada, a potential site for a high level nuclear waste repository, are determined both by the rock properties and past and future changes in climate. A 1-dimensional model was constructed to represent a borehole being drilled through the unsaturated zone. The rock properties...
Effects of dried wastewater-treatment sludge application on ground-water quality in South Dade County, Florida
Barbara Howie
1992, Water-Resources Investigations Report 91-4135
Four test fields in the south Dade agricultural area were studied to determine the effects of sludge application on ground-water quality. Two fields had been cultivated for 10 years or more, and two had not been farmed for at least 10 years. The fields were representative of the area's two...
Hydrogeology and Migration of Septic-Tank Effluent in the Surficial Aquifer System in the Northern Midlands Area, Palm Beach County, Florida
Wesley L. Miller
1992, Water-Resources Investigations Report 91-4175
The northern Midlands area in Palm Beach County is an area of expected residential growth, but its flat topography, poor drainage, and near-surface marl layers retard rainfall infiltration and cause frequent flooding. Public water supplies and sewer services are not planned for the area, thus, residents must rely on domestic...
Effects of horizontal velocity variations on ultrasonic velocity measurements in open channels
E.D. Swain
1992, Water-Resources Investigations Report 91-4200
Use of an ultrasonic velocity meter to determine discharge in open channels involves measuring the velocity in a line between transducers in the stream and relating that velocity to the average velocity in the stream. The standard method of calculating average velocity in the channel assumes that the velocity profile...
Water resources data Maryland and Delaware, water year 1992, Volume 1. Surface-water data
R.W. James, R.H. Simmons, B.F. Strain, J.F. Hornlein
1992, Water Data Report MD-DE-92-1
No abstract available....
Water resources data Maryland and Delaware, water year 1992, Volume 2: Ground-water data
R.W. James, M.J. Smigaj
1992, Water Data Report MD-DE-92-2
No abstract available....
Food preferences of spring-migrating blue-winged teal in southwestern Louisiana
Scott W. Manley, W.L. Hohman, J.L. Moore, David Richard
1992, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies 46-56
We studied effects of pair status, molt intensity, and year on food selection by migrating male blue-winged teal (Anas discors) in southwestern Louisiana during springs 1990 and 1991. Diets consisted primarily of animal foods; but plant material, consisting mostly of seeds, comprised as much as 44%. There was no difference...
A theoretical model for the flux of radon from rock to ground water
Richard B. Wanty, Errol P. Lawrence, Linda C. Gundersen
1992, GSA Special Papers (271)
A model is derived to predict the abundance of 222Rn in ground water in contact with a rock of known uranium content. The model assumes that secular equilibrium is attained in the rock-water system as a whole, but is independent of any microscopic geometric properties of the system. The key...
Tracing watershed weathering reactions with 13C
Carol Kendall, M.A. Mast, Karen C. Rice
1992, Conference Paper, Proceedings of the 7th International Symposium on Water-Rock Interaction: WRI-7
No abstract available....
Toxicity of agricultural subsurface drainwater from the San Joaquin Valley, California to juvenile chinook salmon and striped bass
Michael K. Saiki, Mark R. Jennings, Raymond H. Wiedmeyer
1992, Transactions of the American Fisheries Society (121) 78-93
Juvenile chinook salmon Oncorhynchus tshawytscha (40-50 mm total length, TL) and striped bass Morone saxatilis (30-40 mm TL) were exposed to serial dilutions (100, 50, 25, and 12.5%) of agricultural subsurface drainwater (WWD), reconstituted drainwater (RWWD), and reconstituted seawater (IO). Agricultural subsurface drainwater contained naturally elevated concentrations of major ions...
Toxicity of trace element and salinity mixtures to striped bass (Morone saxatilis) and Daphnia magna
F.J. Dwyer, S.A. Burch, C.G. Ingersoll, J. B. Hunn
1992, Environmental Toxicology and Chemistry (11) 513-520
Acute toxicity tests with reconstituted water were conducted to investigate the relationship between water hardness, salinity, and a mixture of trace elements found in irrigation drain waters entering Stillwater Wildlife Management Area (SWMA), near Fallon, Nevada. The SWMA has been the site of many fish kills in recent years, and...
Ground-water conditions in Utah, spring of 1992
D.M. Batty, L. R. Herbert, J.D. Sory, Karen M. Hanson, James P. Eads, G. J. Smith, M.R. Danner, M.M. Drumiler, R. B. Garrett, S.J. Gerner, B.A. Slaugh, R.L. Swenson, J.H. Howells, H.K. Christiansen, B.K. Thomas
1992, Cooperative Investigations Report 32
This is the twenty-ninth in a series of annual reports that describe ground-water conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Division of Water Resources, provide data to enable interested parties to keep abreast of changing ground-water conditions.This report, like the...
Seepage study of the Bear River including Cutler Reservoir in Cache Valley, Utah and Idaho
L. R. Herbert, B.K. Thomas
1992, Technical Publication 105
A study was made during 1990 on selected reaches of the Bear River including Cutler Reservoir in Cache Valley, Utah and Idaho, to detem1ine gains or losses of flow from seepage in those reaches. The study showed a net gain of 23.5 cubic feet per second in the Riverdale, Idaho,...
Seepage study of the Timpanogos, Wasatch, Sagebrush and Spring Creek, Upper Charleston, and Lower Charleston Canals, Wasatch County, Utah.
L. R. Herbert, Carole B. Burden, B.K. Thomas
1992, Technical Publication 104
A seepage study was made during 1989 on selected reaches of the Timpanogos, Wasatch, Sagebrush and Spring Creek, Upper Charleston, and Lower Charleston Canals in Wasatch County, Utah, to determine gains or losses in discharge. Fluctuations in discharge were adjusted using information from water-stage recorders operated...
Geomorphic response to the 1989-90 eruptions of Redoubt Volcano, Alaska
J.M. Dorava
1992, Conference Paper, 1992 American Water Resources Association Annual Conference
No abstract available....
Sonar monitoring of gravel-transport processes at a stream-gaging station in a disturbed watershed [abs.]
R.L. Dinehart
1992, Book chapter, Proceedings 1992 International Association for Hydrological Sciences Meeting, Erosion and Sediment Transport Monitoring Programs in River Basins, Oslo, Norway
