Publications
All of our publications are accessible through the USGS Publication Warehouse. Publications by scientists of the Oregon Water Science Center are listed below.
Filter Total Items: 755
Modeling Streamflow and Water Temperature in the North Santiam and Santiam Rivers, Oregon, 2001-02
To support the development of a total maximum daily load (TMDL) for water temperature in the Willamette Basin, the laterally averaged, two-dimensional model CE-QUAL-W2 was used to construct a water temperature and streamflow model of the Santiam and North Santiam Rivers. The rivers were simulated from downstream of Detroit and Big Cliff dams to the confluence with the Willamette River. Inputs to t
Authors
Annett B. Sullivan, Stewart A. Roundsk
Reconnaissance of chemical and biological quality in the Owyhee River from the Oregon State line to the Owyhee Reservoir, Oregon, 2001–02
The Owyhee River drains an extremely rugged and sparsely populated landscape in northern Nevada, southwestern Idaho, and eastern Oregon. Most of the segment between the Oregon State line and Lake Owyhee is part of the National Wild and Scenic Rivers System, and few water-quality data exist for evaluating environmental impacts. As a result, the U.S. Geological Survey, in cooperation with the Bureau
Authors
Mark A. Hardy, Terry R. Maret, David L. George
Water Quality in the Yakima River Basin, Washington, 1999-2000
This report contains the major findings of a 1999?2000 assessment of water quality in streams and drains in the Yakima River Basin. It is one of a series of reports by the NAWQA Program that present major findings on water resources in 51 major river basins and aquifer systems across the Nation.
In these reports, water quality is assessed at many scales?from large rivers that drain lands h
Authors
Gregory J. Fuhrer, Jennifer L. Morace, Henry M. Johnson, Joseph F. Rinella, James C. Ebbert, Sandra S. Embrey, Ian R. Waite, Kurt D. Carpenter, Daniel R. Wise, Curt A. Hughes
Pesticides in the Lower Clackamas River Basin, Oregon, 2000-01
In 2000-01, the U. S. Geological Survey sampled the Clackamas River and its major lower-basin tributaries during storm runoff conditions for 86 dissolved pesticides and selected breakdown products. Twenty-seven compounds, including 18 herbicides, 7 insecticides, and 2 pesticide breakdown products, were detected in 18 stream samples. The most commonly detected pesticides, in decreasing frequency, i
Authors
Kurt D. Carpenter
Effect of water-column pH on sediment-phosphorus release rates in Upper Klamath Lake, Oregon, 2001
Sediment-phosphorus release rates as a function of pH were determined in laboratory experiments for sediment and water samples collected from Shoalwater Bay in Upper Klamath Lake, Oregon, in 2001. Aerial release rates for a stable sediment/water interface that is representative of the sediment surface area to water column volume ratio (1:3) observed in the lake and volumetric release rates for res
Authors
Lawrence H. Fisher, Tamara M. Wood
Floods of November 1996 through January 1997 in the Umpqua River Basin, Oregon
No abstract available.
Authors
John C. Risley
The North Santiam River, Oregon, water-quality monitoring network
No abstract available.
Authors
Heather M. Bragg, Mark A. Uhrich
The Evolving Landscape of the Columbia River Gorge: Lewis and Clark and Cataclysms on the Columbia
TAVELERS RETRACING LEWIS AND CLARKE JOURNEY to the Pacific over the past two hundred years have witnessed tre mendous change to the Columbia River Gorge and its pri mary feature, the Columbia River. Dams, reservoirs, timber harvest, altered fisheries, transportation infrastructure, and growth and shrinkage of communities have transformed the river and valley.1 This radically different geography of
Authors
James E. O'Connor
The Evolving Landscape of the Columbia River Gorge: Lewis and Clark and Cataclysms on the Columbia
Travelers reacting Lewis and Clark's journey to the Pacific over the past two hundred years have witnessed tremendous change to the Columbia River Gorge and its primary feature, the Columbia River. Dams, reservoirs, timer harvest, altered fisheries, transportation infrastructure, and growth and shrinkage of communities have transformed the river and valley. This radically different geography of hu
Authors
James E. O'Connor
Water-quality and algal conditions in the Clackamas River basin, Oregon, and their relations to land and water management
In 1998, the U.S. Geological Survey sampled the Clackamas River, its major tributaries, and reservoirs to characterize basic water quality (nutrients, dissolved oxygen, pH, temperature, and conductance), water quantity (water sources within the basin), and algal conditions (biomass and species composition). Sampling locations reflected the dominant land uses in the basin (forest management, agricu
Authors
Kurt D. Carpenter
Klamath River Basin Hydrologic Conditions Prior to the September 2002 Die-Off of Salmon and Steelhead
More than 33,000 salmon and steelhead died in the lower Klamath River in late September 2002 on their way to spawning areas upstream. According to the California Department of Fish and Game, the cause of death was infection by protozoan and bacterial pathogens. Two factors that may have contributed to the disease incidence are low streamflow and high water temperature.
September streamflows throug
Authors
Dennis D. Lynch, John C. Risley
The effect of chamber mixing velocity on bias in measurement of sediment oxygen demand rates in the Tualatin River basin, Oregon
Three sediment oxygen demand (SOD) measurement chambers were deployed in the Tualatin River near Tigard, Oregon, at river mile 10 in August 2000. SOD rates were calculated for three different circulation velocities during each chamber deployment. The SOD rate at each velocity was calculated from a graph of dissolved oxygen concentration versus elapsed time. An acoustic doppler current profiler (AD
Authors
Micelis C. Doyle, Stewart Rounds