Tualatin River Basin Water Quality Assessment Active
In 1990, the USGS began assessing water-quality in the Tualatin River. Almost 30 years later, we are still monitoring conditions in the basin.
The USGS began to assess water quality conditions in the Tualatin River in 1990. The research included tracking how nutrients entered the river and establishing a instrument network to monitor dissolved-oxygen concentrations. Eventually, more issues arose and the research expanded to meet the needs of those reglatory agencies that manage the natural resources of the basin.
Below are other science projects associated with this project.
City Beavers: Tualatin River Basin Beaver Study
Below are data or web applications associated with this project.
Tualatin River Basin Water-Quality Sites
Map of currently active monitors in the Tualatin River Basin, Oregon.
Below are multimedia items associated with this project.
Over the past few decades, there has been a considerable amount of research detailing conditions in the Tualatin River Basin. Here are a collection of some of the most important findings.
Annotated bibliography for Tualatin River Basin Reserach
Posters from Tualatin River Basin studies
Prioritization framework for ranking riverine ecosystem stressors using example sites from the Tualatin River Basin, Oregon
Water-temperature, specific-conductance, and meteorological data for the Tualatin River basin, Oregon, 1994-95
Dissolved oxygen in the Tualatin River, Oregon, during winter flow conditions, 1991 and 1992
Sediment oxygen demand in the Tualatin River basin, Oregon, 1992-96
Dissolved oxygen in the Tualatin River, Oregon, during winter flow conditions, 1991 and 1992
Water-quality, streamflow, and meteorological data for the Tualatin River Basin, Oregon, 1991-93
Below are data or web applications associated with this project.
Below are software products associated with this project.
Below are news stories associated with this project.
Below are partners associated with this project.
- Overview
In 1990, the USGS began assessing water-quality in the Tualatin River. Almost 30 years later, we are still monitoring conditions in the basin.
The USGS began to assess water quality conditions in the Tualatin River in 1990. The research included tracking how nutrients entered the river and establishing a instrument network to monitor dissolved-oxygen concentrations. Eventually, more issues arose and the research expanded to meet the needs of those reglatory agencies that manage the natural resources of the basin.
- Science
Below are other science projects associated with this project.
City Beavers: Tualatin River Basin Beaver Study
Beavers and their dams are common sights along creeks in the Tualatin River basin. Beaver help create diverse habitats for many other animals, including birds, fish, and amphibians. The USGS studying the affect beaver activity has on the amount and quality of water in local streams, so that agencies in the basin can make strategic management and habitat restoration decisions based on science. - Data
Below are data or web applications associated with this project.
Tualatin River Basin Water-Quality Sites
Map of currently active monitors in the Tualatin River Basin, Oregon.
- Multimedia
Below are multimedia items associated with this project.
- Publications
Over the past few decades, there has been a considerable amount of research detailing conditions in the Tualatin River Basin. Here are a collection of some of the most important findings.
Annotated bibliography for Tualatin River Basin Reserach
Posters from Tualatin River Basin studies
Prioritization framework for ranking riverine ecosystem stressors using example sites from the Tualatin River Basin, Oregon
As human populations increase, so does their influence over the environment. Altered terrain, degraded water quality, and threatened or endangered species are all-too-common consequences of a growing anthropogenic influence on the landscape. To help manage these effects, researchers have developed new ways to characterize current environmental conditions and help resource managers seek solutions tAuthorsSteven Sobieszczyk, Krista L. Jones, Stewart A. Rounds, Elena B. Nilsen, Jennifer L. MoraceFilter Total Items: 29Water-temperature, specific-conductance, and meteorological data for the Tualatin River basin, Oregon, 1994-95
Water-temperature, air-temperature, specific- conductance, wind-speed, and solar-radiation data are presented from a study conducted in the Tualatin River Basin in northwestern Oregon during 7-month periods from May 1 through November 30, 1994 and May 1 through November 30, 1995. The study was done to assist local and State agencies in understanding temporal and spatial patterns of water temperatuAuthorsJohn C. Risley, Micelis C. DoyleDissolved oxygen in the Tualatin River, Oregon, during winter flow conditions, 1991 and 1992
This report describes the capacity of the Tualatin River to assimilate oxygen-demanding material during winter streamflow conditions, with an emphasis on peak-flow and winter base-flow conditions. The study examined major processes governing concentrations of dissolved oxygen (DO) in the river under different streamflow conditions, as well as the effect of streamflow and temperature on these proceAuthorsValerie J. KellySediment oxygen demand in the Tualatin River basin, Oregon, 1992-96
Sediment oxygen demand (SOD) rates were measured by U.S. Geological Survey (USGS) personnel at 20 stream sites in the Tualatin River Basin from 1992 through 1996 as part of an investigation into the sources and sinks of dissolved oxygen in the Tualatin River. During the low-flow summer periods of 1992 through 1994, 97 measurements were collected at 9 sites on the main stem of the river between rivAuthorsStewart Rounds, M. C. DoyleDissolved oxygen in the Tualatin River, Oregon, during winter flow conditions, 1991 and 1992
Throughout the winter period, November through April, wastewater treatment plants in the Tualatin River Basin discharge from 10,000 to 15,000 pounds per day of biochemical oxygen demand to the river. These loads often increase substantially during storms when streamflow is high. During the early winter season, when streamflow is frequently less than the average winter flow, the treatment plants diAuthorsV.J. KellyWater-quality, streamflow, and meteorological data for the Tualatin River Basin, Oregon, 1991-93
Surface-water-quality data, ground-water-quality data, streamflow data, field measurements, aquatic-biology data, meteorological data, and quality-assurance data were collected in the Tualatin River Basin from 1991 to 1993 by the U.S. Geological Survey (USGS) and the Unified Sewerage Agency of Washington County, Oregon (USA). The data from that study, which are part of this report, are presented iAuthorsM. C. Doyle, J. M. Caldwell - Web Tools
Below are data or web applications associated with this project.
- Software
Below are software products associated with this project.
- News
Below are news stories associated with this project.
- Partners
Below are partners associated with this project.