Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
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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A spatially referenced regression model (SPARROW) for suspended sediment in streams of the Conterminous U.S. A spatially referenced regression model (SPARROW) for suspended sediment in streams of the Conterminous U.S.
Suspended sediment has long been recognized as an important contaminant affecting water resources. Besides its direct role in determining water clarity, bridge scour and reservoir storage, sediment serves as a vehicle for the transport of many binding contaminants, including nutrients, trace metals, semi-volatile organic compounds, a nd numerous pesticides (U.S. Environmental Protection...
Authors
Gregory E. Schwarz, Richard A. Smith, Richard B. Alexander, John R. Gray
Exploring the relationship between nearshore morphology and shoreline change Exploring the relationship between nearshore morphology and shoreline change
Nearshore bathymetry data collected along the US Pacific Northwest is analyzed to determine relationships between nearshore morphology and shoreline change at a variety of spatial scales. Sandbar properties are compared at three sites, locations separated by tens of kilometers but subject to similar hydrodynamic forcing and having like sediment characteristics. These three sites, an...
Authors
Peter Ruggiero, Guy Gelfenbaum, David Thompson, George M Kaminsky
Coastal evolution and sediment budget at the mouth of the Columbia River, USA Coastal evolution and sediment budget at the mouth of the Columbia River, USA
The coastal morphology of the Mouth of the Columbia River (MCR) has changed dramatically over the past century. Since the construction of jetties in 1914 and 1917, the inlet deepened and stabilized, the outer ebb delta migrated northward and offshore several kilometers, and the adjacent shorelines to the north and south prograded several hundreds of meters. Recently, high rates of...
Authors
Guy Gelfenbaum, Maarten C. Buijsman, Christopher R. Sherwood, Hans R. Moritz, Ann E. Gibbs
Sediment transport on a high-energy ebb-tidal delta Sediment transport on a high-energy ebb-tidal delta
Six tripods were deployed at shallow (~14-m) and deep (~24-m) sites on the northern, middle, and southern flanks of the Grays Harbor, Washington, U.S.A. ebb-tidal delta from early October through December, 1999 to measure waves, currents, temperature, and suspended-sediment concentrations as part of a wave-refraction and sediment-transport experiment. Directional wave spectra show that...
Authors
Christopher R. Sherwood, Guy Gelfenbaum, Peter A. Howd, Margaret L. Palmsten
Scientific and social landscapes: New frameworks and forums for water management and sustainability Scientific and social landscapes: New frameworks and forums for water management and sustainability
The Two Decades of Water Law and Policy Reform conference examines the agenda for reforming and improving water law that has developed during the past two decades in the West, assesses what has (and has not) been accomplished by pursuing these reforms, and explores lessons and implications for future water law and policy. The papers and discussion provide analysis and lessons that can...
Authors
Christine Turner, Herman A. Karl
Using radiotelemetry to determine fish passage information at large hydroelectric dams: Design and analysis to achieve multiple objectives with a single design Using radiotelemetry to determine fish passage information at large hydroelectric dams: Design and analysis to achieve multiple objectives with a single design
Abstract not available
Authors
J.W. Beeman, T.D. Counihan
Occurrence and distribution of pesticides in streams of the Eastern Iowa Basins, 1996-98 Occurrence and distribution of pesticides in streams of the Eastern Iowa Basins, 1996-98
The U.S. Geological Survey began collection of water samples in streams of the Eastern Iowa Basins in 1996 for the analysis of pesticides and pesticide degradates as part of the National Water Quality Assessment Program (NAWQA). This study provides some of the first large scale monitoring data on pesticides and pesticide degradates in Eastern Iowa. Three hundred and forty-four samples...
Authors
Douglas J. Schnoebelen, Stephen J. Kalkhoff, Kent Becher
Quality of water in alluvial aquifers in eastern Iowa Quality of water in alluvial aquifers in eastern Iowa
The goal of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program is to assess the status and trends in the quality of the Nation's surface and ground water, and to better understand the natural and human factors affecting water quality. The Eastern Iowa Basins study unit encompasses an area of about 50,500 square kilometers (19,500 square miles) in eastern...
Authors
Mark E. Savoca, Eric M. Sadorf, S. Michael Linhart, Kimberlee K. Barnes
The occurrence of chloroacetanilide and triazine herbicide degradates in streams in eastern Iowa The occurrence of chloroacetanilide and triazine herbicide degradates in streams in eastern Iowa
No abstract available.
Authors
Stephen J. Kalkhoff, Douglas J. Schnoebelen, Earl Michael Thurman
Occurrence, distribution, and transport of nutrients in Eastern Iowa Rivers Occurrence, distribution, and transport of nutrients in Eastern Iowa Rivers
Eleven streams in the Wapsipinicon, Cedar, Iowa, and Skunk River basins in eastern Iowa were sampled monthly from March 1996 through September 1998 to assess the occurrence, distribution, and transport of nitrogen, phosphorus, and suspended sediment as part of the U.S. Geological Survey's National Water-Quality Assessment Program. At least one form of dissolved nitrogen and phosphorus...
Authors
Kent Becher
The rainfall-triggered landslide and flash-flood disaster in northern Venezuela, December 1999 The rainfall-triggered landslide and flash-flood disaster in northern Venezuela, December 1999
Rainstorms in December 1999 induced thousands of landslides along the northern slopes of the Cordillera de la Costa mountain range principally in the state of Vargas, Venezuela. Rainfall accumulation of 293 millimeters during the first 2 weeks ofDecember was followed by an additional 911 millimeters of rainfall on December 14 through 16. The landslides and floods inundated coastal...
Authors
Matthew C. Larsen, Gerald F. Wieczorek, L.S. Eaton, Heriberto Torres-Sierra
Preplanting site treatments and natural invasion of tree species onto former agricultural fields at the Tensas River National Wildlife Refuge, Louisiana Preplanting site treatments and natural invasion of tree species onto former agricultural fields at the Tensas River National Wildlife Refuge, Louisiana
No abstract available.
Authors
John W. McCoy, Bobby D. Keeland, B.R. Lockhart, Thomas Dean