In this episode, we are going to investigate more than just the substance "water." We are going to examine what is in our nations' water, how we at the U.S. Geological Survey monitor it, and what tools we have developed to aid those who want to explore more about our planet's most abundant resource. This is the USGS Oregon Science Podcast.
Willamette River Studies Active
Welcome to the Willamette River Study page. Here you will find links to USGS research for the Willamette River and the Willamette River Basin.
Below are other science projects associated with this project.
Synthesizing the State of Science of Coldwater Refuges in the Willamette River Basin
Willamette Instream Flows
Future Climate Effects on Columbia and Willamette River Levees
Willamette River Basin Dissolved Gas Monitoring Network
Water Temperature Modeling in the Middle Fork Willamette and South Santiam River Basins
A Thermal Mosaic for the Willamette River
Fall Creek Drawdown
Assessing Mercury Loads in Cottage Grove Reservoir
Environmental Flow Studies for Middle Fork Willamette, McKenzie, and Santiam River Basins
Willamette Basin Groundwater Study
Videos
In this episode, we are going to investigate more than just the substance "water." We are going to examine what is in our nations' water, how we at the U.S. Geological Survey monitor it, and what tools we have developed to aid those who want to explore more about our planet's most abundant resource. This is the USGS Oregon Science Podcast.
Below are publications associated with this project.
Estimated Depth to Ground Water and Configuration of the Water Table in the Portland, Oregon Area
An 11 000-year-long record of fire and vegetation history at Beaver Lake, Oregon, central Willamette Valley
Amphibian occurrence and aquatic invaders in a changing landscape: Implications for wetland mitigation in the Willamette Valley, Oregon
Selected elements and organic chemicals in streambed sediment in the Salem area, Oregon, 1999
Herbicide use in the management of roadside vegetation, western Oregon, 1999-2000; effects on the water quality of nearby streams
Associations among fish assemblage structure and environmental variables in Willamette Basin streams, Oregon
Arsenic in ground water of the Willamette Basin, Oregon
Water quality in the Willamette Basin, Oregon, 1991-95
Comparison of chlorofluorocarbon-age dating with particle-tracking results of a regional ground-water flow model of the Portland Basin, Oregon and Washington
Distribution of dissolved pesticides and other water quality constituents in small streams, and their relation to land use, in the Willamette River Basin, Oregon, 1996
Description of the ground-water flow system in the Portland Basin, Oregon and Washington
Simulation analysis of the ground-water flow system in the Portland Basin, Oregon and Washington
Analytical data from phases I and II of the Willamette River basin water quality study, Oregon
Below are data or web applications associated with this project.
- Overview
Welcome to the Willamette River Study page. Here you will find links to USGS research for the Willamette River and the Willamette River Basin.
- Science
Below are other science projects associated with this project.
Synthesizing the State of Science of Coldwater Refuges in the Willamette River Basin
Many regulatory, management, and conservation organizations are interested in protecting and increasing coldwater refuges and thermal diversity for Chinook salmon, steelhead, and other natives fishes in the Willamette River basin. This study synthesizes current and emerging science related to coldwater refuges and thermal diversity. It is also develops conceptual frameworks for understanding the...Willamette Instream Flows
When streamflow fluctuates in the Willamette River so does the amount of available rearing habitat used by Threatened Upper Willamette River spring Chinook salmon and winter steelhead trout. The USGS investigates how flow conditions and dam operations affect rearing habitat availability so that flow managers can maintain suitable flows for these species.Future Climate Effects on Columbia and Willamette River Levees
USGS research directly helps local public agencies that are responsible for the design and maintenance of the levees that surround the northern Portland metropolitan area with the goal of protecting life and property in the event of flooding from the Columbia and Willamette Rivers that surround the city.Willamette River Basin Dissolved Gas Monitoring Network
USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along tributaries of the Willamette River.Water Temperature Modeling in the Middle Fork Willamette and South Santiam River Basins
Hills Creek, Lookout Point, and Dexter Dams are located on the Middle Fork Willamette River upstream of Eugene in western Oregon, and are important resources managed by the U.S. Army Corps of Engineers (USACE) for flood control, hydroelectric power, recreation, navigation, and irrigation. On the South Santiam River east of Albany in western Oregon, Green Peter and Foster Dams provide functions and...A Thermal Mosaic for the Willamette River
The U.S. Army Corps of Engineers operates 12 dams in the Willamette River Basin. The dams alter natural temperature and hydrologic regimes. Unnatural water temperatures can negatively impact all life stages of salmonid fish species. Water temperature in the mainstem Willamette River regularly exceeds the standard of 18.0 °C (64.4 °F) designated for salmon and trout rearing and migration for mid...Fall Creek Drawdown
Each autumn Fall Creek Lake is drawn down to allow endangered juvenile salmonids to pass freely through the dam. The drawdowns involve lowering the lake water level to the lake bed, creating a fluvial environment characterized by large amounts of sediment being transported through the dam and into Fall Creek and the Middle Fork Willamette River.Assessing Mercury Loads in Cottage Grove Reservoir
Cottage Grove Reservoir is an impoundment of the Coast Fork of the Willamette River and is managed by the U.S. Army Corps of Engineers (USACE) as part of the Willamette Valley Flood Control Plan. The reservoir is currently under a fish consumption advisory because of elevated levels of mercury in fish tissue observed in an Oregon Department of Environmental Quality sampling survey in 2003 (Oregon...Environmental Flow Studies for Middle Fork Willamette, McKenzie, and Santiam River Basins
Environmental flows are defined as "streamflow needed to sustain ecosystems while continuing to meet human needs."Willamette Basin Groundwater Study
The U.S. Geological Survey (USGS) studies the water resources of the Willamette River Basin. Here you will find a description of the study, as well as information and data resulting from this work. - Multimedia
Videos
What's in Our Water?In this episode, we are going to investigate more than just the substance "water." We are going to examine what is in our nations' water, how we at the U.S. Geological Survey monitor it, and what tools we have developed to aid those who want to explore more about our planet's most abundant resource. This is the USGS Oregon Science Podcast.
In this episode, we are going to investigate more than just the substance "water." We are going to examine what is in our nations' water, how we at the U.S. Geological Survey monitor it, and what tools we have developed to aid those who want to explore more about our planet's most abundant resource. This is the USGS Oregon Science Podcast.
- Publications
Below are publications associated with this project.
Estimated Depth to Ground Water and Configuration of the Water Table in the Portland, Oregon Area
Reliable information on the configuration of the water table in the Portland metropolitan area is needed to address concerns about various water-resource issues, especially with regard to potential effects from stormwater injection systems such as UIC (underground injection control) systems that are either existing or planned. To help address these concerns, this report presents the estimated deptAuthorsDaniel T. SnyderFilter Total Items: 23An 11 000-year-long record of fire and vegetation history at Beaver Lake, Oregon, central Willamette Valley
High-resolution macroscopic charcoal and pollen analysis were used to reconstruct an 11??000-year-long record of fire and vegetation history from Beaver Lake, Oregon, the first complete Holocene paleoecological record from the floor of the Willamette Valley. In the early Holocene (ca 11??000-7500 calendar years before present [cal??yr??BP]), warmer, drier summers than at present led to the establiAuthorsMegan K. Walsh, Christopher A. Pearl, Cathy Whitlock, Patrick J. Bartlein, Marc A. WoronaAmphibian occurrence and aquatic invaders in a changing landscape: Implications for wetland mitigation in the Willamette Valley, Oregon
Despite concern about the conservation status of amphibians in western North America, few field studies have documented occurrence patterns of amphibians relative to potential stressors. We surveyed wetland fauna in Oregon's Willamette Valley and used an information theoretic approach (AIC) to rank the associations between native amphibian breeding occurrence and wetland characteristics, non-nativAuthorsChristopher A. Pearl, M. J. Adams, N. Leuthold, R. Bruce BurySelected elements and organic chemicals in streambed sediment in the Salem area, Oregon, 1999
Analysis of streambed sediments in the Salem, Oregon, area showed anomalously large concentrations of some elements and organic chemicals, indicating contamination from anthropogenic and/or geologic sources. The streambed sediment sample from Clark Creek, an urban basin, had large concentrations of polycyclic aromatic hyrdocarbons (PAHs), organochlorines, cadmium, lead, and zinc. The sample from tAuthorsDwight Q. TannerHerbicide use in the management of roadside vegetation, western Oregon, 1999-2000; effects on the water quality of nearby streams
The Oregon Department of Transportation (ODOT) uses the herbicides Krovar (active ingredients diuron and bromacil), Oust (active ingredient sulfometuron-methyl) and Roundup (active ingredient glyphosate) to control roadside vegetation. The purpose of this study was to assess whether the use of these herbicides could contribute to the load of herbicides carried by Oregon streams. In spring of 1999,AuthorsTamara M. WoodAssociations among fish assemblage structure and environmental variables in Willamette Basin streams, Oregon
As part of the U.S. Geological Survey's National Water-Quality Assessment Program, fish were collected from 24 selected stream sites in the Willamette Basin during 1993-1995 to determine the composition of the fish assemblages and their relation to the chemical and physical environment. Variance in fish relative abundance was greater among all sites than among spatially distinct reaches within a sAuthorsIan R. Waite, Kurt D. CarpenterArsenic in ground water of the Willamette Basin, Oregon
In response to increasing demands on ground-water resources in the Willamette Basin, Oregon (fig. 1), the Oregon Water Resources Department (OWRD) and the U.S. Geological Survey (USGS) began a cooperative study of the basin’s ground-water resources in 1996. This study was designed to increase the current understanding of the ground-water resource, and to better characterize the distribution of natAuthorsStephen R. Hinkle, Danial J. PoletteWater quality in the Willamette Basin, Oregon, 1991-95
This report is intended to summarize major findings that emerged between 1991 and 1995 from the water-quality assessment of the Willamette Basin Study Unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in water-resource management. Yet, the information contained here may also interest those whAuthorsDennis A. Wentz, Bernadine A. Bonn, Kurt D. Carpenter, Stephen R. Hinkle, Mary L. Janet, Frank A. Rinella, Mark A. Uhrich, Ian R. Waite, Antonius Laenen, Kenneth E. BencalaComparison of chlorofluorocarbon-age dating with particle-tracking results of a regional ground-water flow model of the Portland Basin, Oregon and Washington
This report describes the results of a study in which chlorofluorocarbon-age dating was used to evaluate the results of a ground-water particle tracker for the Portland Basin in Oregon and Washington.AuthorsStephen R. Hinkle, Daniel T. SnyderDistribution of dissolved pesticides and other water quality constituents in small streams, and their relation to land use, in the Willamette River Basin, Oregon, 1996
Water quality samples were collected at sites in 16 randomly selected agricultural and 4 urban subbasins as part of Phase III of the Willamette River Basin Water Quality Study in Oregon during 1996. Ninety-five samples were collected and analyzed for suspended sediment, conventional constituents (temperature, dissolved oxygen, pH, specific conductance, nutrients, biochemical oxygen demand, and bacAuthorsChauncey W. Anderson, Tamara M. Wood, Jennifer L. MoraceDescription of the ground-water flow system in the Portland Basin, Oregon and Washington
An increasing dependence on ground-water resources in the Portland Basin has made it necessary for State and local governments to evaluate the capability of the ground-water system to meet present and future demands for water. This report describes the regional ground-water system and provides a conceptualization of the aquifer system. Aquifer geometry, recharge, ground-water flow directions, grouAuthorsWilliam D. McFarland, David S. MorganSimulation analysis of the ground-water flow system in the Portland Basin, Oregon and Washington
This report presents results derived from a numerical model of the ground-water flow system in the Portland Basin, Oregon and Washington, that was used to test and refine the conceptual understanding of the flow system, estimate the effects of past and future human-caused changes to ground-water recharge and discharge on ground-water levels and streamflow, and determine priorities for ground-waterAuthorsDavid S. Morgan, William D. McFarlandAnalytical data from phases I and II of the Willamette River basin water quality study, Oregon
This report presents trace-element, organic-compound (pesticides, volatile and semivolatile organic compounds, and dioxin and furan compounds), and nutrient concentration data from the analyses of water column, suspended-sediment, and bed-sediment samples collected by the U.S. Geological Survey as part of Phases I and II of the comprehensive Willamette River Basin Water Quality Study in western OrAuthorsHoward E. Harrison, Chauncey W. Anderson, Frank A. Rinella, Timothy M. Gasser, Ted R. Pogue - Web Tools
Below are data or web applications associated with this project.