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...
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...
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....
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....
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...
Chapter 4: Cretaceous thrusting and Neogene block rotation in the northern Portneuf Range region, southeastern Idaho
Karl S. Kellogg
1992, Memoir of the Geological Society of America (179) 95-113
The Putnam thrust has long been recognized as an important Mesozoic structure in the northern Portneuf Range, southeastern Idaho. At most localities, the thrust places Ordovician rocks above Permian and Pennsylvanian rocks, although near its southeastern extent, it ramps laterally downsection to the southeast. At its southeasternmost exposures, Cambrian rocks...
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...
American swallow-tail kite
J. Allen, Wayne Norling
1992, Louisiana Conservationist (44) 29-30
No abstract available...
Knowledge-based GIS: An expert system approach for managing wetlands
Wei Ji, James B. Johnston, Marcia McNiff, Loyd C. Mitchell
1992, Geo Info Systems (10) 60-64
No abstract available...
Analyzing vegetation dynamics of land systems with satellite data
Jeffery C. Eidenshink, Robert H. Haas
1992, Geocarto International (7) 53-61
Large area assessment of vegetation conditions is a major requirement for understanding the impact of weather on food, fiber, and forage production. The distribution of vegetation is largely associated with climate, terrain characteristics, and human activity. The interpretation of vegetation dynamics from satellite data can be improved by stratifying the...
A postulated new source for the White River Ash, Alaska: A section in Geologic studies in Alaska by the US. Geological Survey, 1990
Robert G. McGimsey, Donald H. Richter, Gregory D. DuBois, T. P. Miller
1992, Bulletin 1999
The White River Ash (Lerbekmo and others, 1968), product of two of the most voluminous pyroclastic eruptions in North America in the past 2,000 yr, blankets much of the Yukon Terrtory, Canada, and a small part of adjoining eastern Alaska. Lerbekmo and Campbell (1969) narrowed the source of the ash...
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...
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...
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...
Use of semipermeable membrane devices for in situ monitoring of polycyclic aromatic hydrocarbons in aquatic environments
Jon A. Lebo, James L. Zajicek, James N. Huckins, Jimmie D. Petty, Paul H. Peterman
1992, Chemosphere (25) 697-718
A method is given for the recovery, cleanup, and analysis of polycyclic aromatic hydrocarbons (PAHs) that have been sequestered in SPMDs (semipermeable membrane devices). SPMDs are polymeric membranes enclosing lipids, and mimic the bioconcentration process of aquatic animals. SPMDs are used as passive, in situ monitors of contamination by organic...
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
Sources of nitrogen and phosphorous to northern San Francisco Bay
Stephen W. Hager, Laurence E. Schemel
1992, Estuaries and Coasts (15) 40-52
We studied nutrient sources to the Sacramento River and Suisun Bay (northern San Francisco Bay) and the influence which these sources have on the distributions of dissolved inorganic nitrogen (DIN) and dissolved reactive phosphorus (DRP) in the river and bay. We...
Lake ice records used to detect historical and future climatic changes
Dale M. Robertson, R.A. Ragotzkie, John J. Magnuson
1992, Climatic Change (21) 407-427
Historical ice records, such as freeze and breakup dates and the total duration of ice cover, can be used as a quantitative indicator of climatic change if long homogeneous records exist and if the records can be calibrated in terms of climatic changes. Lake Mendota, Wisconsin, has the longest...
Impacts of variation in planktivorous fish on abundance of daphnids: A simulation model of the Lake Mendota food web: Chapter 20
Chris Luecke, Cynthia C. Lunte, Russell A. Wright, Dale M. Robertson, Ann S. McLain
James F. Kitchell, editor(s)
1992, Book chapter, Food Web Managment: A Case Study of Lake Mendota
Previous chapters in this volume have outlined the goals of the Lake Mendota food web manipulation study (Rudstam et al., Ch. 12) and have reported on variations in phytoplankton and zooplankton abundances during the past 15 years (Lathrop and Carpenter, Ch. 7 and 8). Because of the long time scales...
Climatic changes near the Great Lakes inferred from 141 year ice records
Raymond A. Assel, Dale M. Robertson
1992, Conference Paper, 5th International Meeting on Statistical Climatology
Freeze-up and break-up dates and duration of ice cover for lakes and rivers represent an integration of weather conditions prior to the specified event(s). Changes in mean ice conditions may be used as quantitative indicators of climatic changes if long homogenous ice records are accompanied by sufficiently homogenous air temperature...
The role of groundwater transport in aquatic mercury cycling
David P. Krabbenhoft, Christopher L. Babiarz
1992, Water Resources Research (28) 3119-3128
Mercury, which is transported globally by atmospheric pathways to remote aquatic environments, is a ubiquitous contaminant at very low (nanograms Hg per liter) aqueous concentrations. Until recently, however, analytical and sampling techniques were not available for freshwater systems to quantify the actual levels of mercury concentrations without introducing significant contamination...
