Conference Papers
Science Quality and Integrity
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Characteristics of low-slope streams that affect O2 transfer rates
Multiple-regression techniques were used to derive the reaeration coefficients estimating equation for low sloped streams: K2 = 3.83 MBAS-0.41 SL0.20 H-0.76, where K2 is the reaeration coefficient in base e units per day; MBAS is the methylene blue active substances concentration in milligrams per liter; SL is the water-surface slope in foot per foot; and H is the mean-flow depth in feet. Fourteen
Authors
Gene W. Parker, Leslie A. DeSimone
Collected papers from the sixth annual meeting of the society for organic petrology
[No abstract available]
Authors
R.D. Harvey, J.C. Crelling, D.D. Kaegi
Concluding remarks: Disease ecology and the conservation of avian species
No abstract available.
Authors
M. Friend, G. Wobeser
Coupled surface-water and ground-water model
In areas with dynamic and hydraulically well connected ground-water and surface-water systems, it is desirable that stream-aquifer interaction be simulated with models of equal sophistication and accuracy. Accordingly, a new, coupled ground-water and surface-water model was developed by combining the U.S. Geological Survey models MODFLOW and BRANCH. MODFLOW is the widely used modular three-dimensi
Authors
Eric D. Swain, Eliezer J. Wexler
Data standardization. The key to effective management
Effective management of the nation's water resources is dependent upon accurate and consistent hydrologic information. Before the emergence of environmental concerns in the 1960's, most hydrologic information was collected by the U.S. Geological Survey and other Federal agencies that used fairly consistent methods and equipment. In the past quarter century, however, increased environmental awarene
Authors
C. Russell Wagner
Denali Park wolf studies: Implications for Yellowstone
The Northern Rocky Mountain Wolf Recovery Plan approved by the U.S. Fish and Wildlife Service (1987) recommends re-establishment of wolves (Canis lupus) in Yellowstone National Park. Bills proposing wolf re-establishment in the Park have been introduced into the U.S. House and Senate. However, several questions have been raised about the possible effects of wolf re-establishment on other Yellowsto
Authors
L. David Mech, Thomas J. Meier, John W. Burch
Disease prevention and control in endangered avian species: Special considerations and needs
No abstract available.
Authors
M. Friend, N. J. Thomas
Diseases of whooping cranes seen during annual migration of the Rocky Mountain flock
Diagnosis and treatment of ill whooping cranes of the Rocky Mountain flock was provided by a zoological facility. Cases of avian cholera, lead poisoning and avian tuberculosis were encountered. The zoo efforts were an adjunct to the U.S. Fish and Wildlife Service, Whooping Crane Recovery Plan.
Authors
S. Bret Snyder, Michael J. Richard, Roderick C. Drewien, Nancy J. Thomas, John P. Thilsted
Distribution of rubidium, strontium, and zirconium in tuff from two deep coreholes at Yucca Mountain, Nevada
Variations in concentrations of trace elements Rb, Sr, and Zr within the sequence of high-silica tuff and dacitic lava beneath Yucca Mountain reflect both primary composition and secondary alteration. Rb and K concentrations have parallel trends. Rb concentrations are significantly lower within intervals containing zeolitic nonwelded to partially welded and bedded tuffs and are higher in thick mod
Authors
Richard W. Spengler, Zell E. Peterman
Drought-related West Tennessee channel bank failures
Massive bank failures occurred in 1988 along a 14-kilometer reach of the lower Obion River channel in Dyer County, West Tennessee where the river flows through an abandoned Mississippi River meander. Bank failures in this reach extend as far as 50 meters from the channel and reach depths of 20 meters below ground surface. The critical elements that led to the failures appear to have been the combi
Authors
W.J. Wolfe, B.A. Bryan
Effect of channelization of Rio Puerto Nuevo on ground-water levels in the San Juan metropolitan area, Puerto Rico
Channelization and concrete lining of the Rio Puerto Nuevo and its tributaries in the San Juan Metropolitan area has been proposed to control flooding in low lying areas adjacent to the stream. Concern about the effect of these channel modifications on the ground-water system prompted the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers to conduct an investigation of sur
Authors
Ingrid Padilla
Effects of drainage on water, sediment and biota
The U.S. Department of the Interior started a program in 1985 to identify effects of irrigation-induced trace constituents in water, bottom sediment and biota. The program was developed in response to concerns that contamination similar to that found in 1983 at Kesterson Reservoir in California might exist elsewhere. Studies are complete or underway for 26 sites in 15 western States. Selenium is t
Authors
Richard A. Engberg, Marc A. Sylvester, Herman R. Feltz