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Tualatin River Basin Water Quality Assessment
In 1990, the Oregon Water Science Center of the
U.S. Geological Survey began a
water-quality assessment of the Tualatin River, in partnership with
Clean Water Services
(formerly Unified Sewerage Agency of Washington County, Oregon). These web
pages are intended to provide an overview of that project, and to provide
selected data from the Tualatin River Basin.
![image: jackson_bottom_channel.jpg](pics/jackson_bottom_channel.jpg)
Tualatin River at Jackson Bottom
(Photo by S. Rounds)
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General information
- Description of the basin and the project
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Streamflow and Stage
- Near-real-time streamflow and stage data from
selected Tualatin River Basin sites (data from USGS and Oregon Water
Resources Department sources)
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Continuous Water Quality Monitors
- Water-quality data from selected Tualatin River Basin monitors
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Water Quality Samples
- Water-quality data from samples collected from Tualatin River Basin sites
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Weather and Precipitation
- Portland Metropolitan area weather and precipitation links
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Hagg Lake Water-Quality Model
- Information, GIS datasets, models, and visualizations of model output
for the USGS water-quality model of Henry Hagg Lake
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Hagg Lake Model Scenarios
- Information, models, and model output for the USGS dam-raise
simulations Henry Hagg Lake
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Reports
- Published reports from the project
Recent reports:
- Hagg Lake model scenarios
- evaluation of optical dissolved oxygen probes
- modifications to the CE-QUAL-W2 model to support reservoir
outlet temperature blending
Other Links of Interest:
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USGS, Oregon Water Science Center
- Home page for USGS Water Resources Division operations in
Oregon
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USGS Publications Warehouse
- Database and links to more than 60,000 USGS reports
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USGS
real-time streamflow data
- ...for Oregon stations
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USGS historic
streamflow data
- ...for Oregon stations
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Washington
County Watermaster home page
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Tualatin River Watershed Council
home page
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Tualatin Basin
Water Supply project
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Tualatin
TMDL documents from the Oregon Department of Environmental Quality.
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