Conference Papers
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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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Design of Manning's-roughness-coefficient study in New York State
Field-collected hydraulic data can be used to compute roughness coefficients for channels with different hydraulic characteristics. Suggested criteria for the design of a roughness-coefficient study include: (1) location of the study reach close to an established streamflow-monitoring site with a stable high-flow stage-to-discharge relation; (2) uniform hydraulic conditions within, and upstream an
Authors
William F. Coon
Development of saline seeps in Southwestern United States
Saline seeps are an increasingly serious problem in semi-arid regions of the southwestern United States. They result when excessive recharge of the shallow ground water in soils raises the water table locally to within one meter of the land surface, and the salinity of the shallow water is increased through evaporation. In this connection, a comprehensive study is being undertaken in Oklahoma and
Authors
Kenneth S. Johnson
Dose-response effects of recombinant bovine somatotrop (Posilac) on growth performance and body composition of rainbow trout (Oncorhynchus mykiss)
No abstract available at this time
Authors
K.G. DeYonge, R.A. Roeder, M.J. Garber, W.A. Lellis, D. C. Honeyfield, R.C. Bull, G.T. Schelling, J.C. Byatt
Effects of flow duration on local scour at bridge piers in New York
The relation of local scour to the duration of high flows and other hydraulic properties is being studied at 31 bridge sites in New York State. Clear-water scour is common at most of the sites, and local-scour holes that formed during prolonged high flows did not refill during flow recessions. The deepening of about 20 local-scour holes by subsequent high flows indicates that the length of time a
Authors
Gerard K. Butch, Richard Lumia
Effects of gravel mining on natural cottonwood stands
No abstract available.
Authors
M. L. Scott, E. D. Eggleston, G.T. Auble, J. M. Friedman, L.S. Ischinger
Effects of simulated ice on the performance of price type-AA current meter rotors
Slush ice readily adheres to the standard metal rotor of the winter Price type-AA current meter and affects the ability of the meter to measure the flow velocity accurately. Tests conducted at the U.S. Geological Survey Hydraulics Laboratory at Stennis Space Center, Mississippi, attempt to quantify the effects of slush ice on the performance of standard Price type-AA meter metal rotors. Test data
Authors
Janice M. Fulford
Factors affecting accuracy of slope-area discharge determination of the September 1992 flood in Raven Fork, Western North Carolina
For the flood of September 10, 1992, in Raven Fork, Swain County, North Carolina, a peak discharge of 460 cubic meters per second was computed by using the slope-area method. Accuracy of this determination depends on suitability of the selected reach and, in particular, selection of Manning's roughness coefficients, interpretation of the high-water marks, number and placement of cross sections, pr
Authors
W. Harold Eddins, Thomas J. Zembrzuski
Field performance of an acoustic scour-depth monitoring system
The Herbert C. Bonner Bridge over Oregon Inlet serves as the only land link between Bodie and Hatteras Islands, part of the Outer Banks of North Carolina. Periodic soundings over the past 30 years have documented channel migration, local scour, and deposition at several pilings that support the bridge. In September 1992, a data-collection system was installed to permit the off-site monitoring of s
Authors
Robert R. Mason,, D. Max Sheppard
Flood monitoring network in southeastern Louisiana
A flood monitoring network has been established to alert emergency operations personnel and the public about hydrologic conditions in the Amite River Basin. The U.S. Geological Survey (USGS), in cooperation with the Louisiana Office of Emergency Preparedness (LOEP), has installed a real-time data acquisition system to monitor rainfall and river stages in the basin. These data will be transmitted f
Authors
Brian E. McCallum
Floodflow effects on riparian vegetation in Arizona
A relation for estimating changes in the condition of riparian vegetation as a function of stream power was developed for stream channels in central Arizona. Flood and vegetation data were collected from 13 flows at 11 sites. Stream power was computed at cross sections and plotted against the average height of vegetation for each flow. The effect of the flow - no effect, little effect, laid over,
Authors
J. V. Phillips, H. W. Hjalmarson
Flow and chloride transport in the tidal Hudson River, NY
A one-dimensional dynamic-flow model and a one-dimensional solute-transport model were used to evaluate the effects of hypothetical public-supply water withdrawals on saltwater intrusion in a 133-mile reach of the tidal Hudson River between Green Island dam, near Troy, N.Y., and Hastings-on-Hudson, N.Y. Regression techniques were used in analyses of current and extreme historical conditions, and n
Authors
Lawrence A. Weiss, Raymond W. Schaffranek, M. Peter de Vries
Flowing wells in northeastern North Dakota and their possible effect on water quality in the Red River of the North Basin
No abstract available.
Authors
M.L. Strobel, J. B. Kelly, S. T. Carlson, H. A. Salendar