Oregon Water Science Center

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Welcome to the USGS in Oregon. Our mission is to explore the natural world around us and provide reliable scientific information to help Federal, State, and local agencies, Tribes, and the public make well-informed decisions. Our research is widely used to manage Oregon's water resources for the benefit and safety of people and the environment. 

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Current Stream Conditions

Current Stream Conditions

See what is happening in streams near you. View real-time stream data for streams around Oregon.

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Weekly Science Seminar

Weekly Science Seminar

Our lunchtime seminars are held Tuesdays from 12pm to 1 pm and are open to the public.

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News

Date published: June 14, 2021

USGS Releases Groundwater-Level Contour Maps for the Harney Basin, Oregon

Groundwater-level contour maps from a groundwater-availability study of the Harney Basin are now available. These results are important for understanding the status of groundwater resources in the basin and how they might respond to future demand.

Date published: June 14, 2021

PSU-USGS study improves the understanding of how pesticides are transported within Oregon coastal watersheds

The results from this study provide insights into the effectiveness of current forest management practices in controlling the transport of forest-use pesticides.

Date published: April 16, 2021

A Momentous Anniversary for USGS Continuous Water-Quality Monitoring in Oregon

May 7th, 2021 will mark 30 years of continuous water-quality monitoring in the Tualatin River for the USGS Oregon Water Science Center.

Publications

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Year Published: 2021

Climate impacts on source contributions and evaporation to flow in the Snake River Basin using surface water isoscapes (δ2H and δ18O)

Rising global temperatures are expected to decrease the precipitation amount that falls as snow, causing greater risk of water scarcity, groundwater overdraft, and fire in areas that rely on mountain snowpack for their water supply. Streamflow in large river basins varies with the amount, timing, and type of precipitation, evapotranspiration, and...

Windler, Grace; Brooks, J. Renée; Johnson, Henry M.; Comeleo, Randy; Coulombe, Rob; Bowen, Gabriel J.

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Year Published: 2021

Sediment transport, turbidity, and dissolved oxygen responses to annual streambed drawdowns for downstream fish passage in a flood control reservoir

Sediment transport, turbidity, and dissolved oxygen were evaluated during six consecutive water years (2013–2018) of drawdowns of a flood control reservoir in the upper Willamette Valley, Oregon, USA. The drawdowns were conducted to allow volitional passage of endangered juvenile chinook salmon through the dam's regulating outlets by lowering...

Schenk, Liam N.; Bragg, Heather M.

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Year Published: 2021

Is there an urban pesticide signature? Urban streams in five U.S. regions share common dissolved-phase pesticides but differ in predicted aquatic toxicity

Pesticides occur in urban streams globally, but the relation of occurrence to urbanization can be obscured by regional differences. In studies of five regions of the United States, we investigated the effect of region and urbanization on the occurrence and potential toxicity of dissolved pesticide mixtures. We analyzed 225 pesticide compounds in...

Nowell, Lisa H.; Moran, Patrick W.; Bexfield, Laura M.; Mahler, Barbara; Van Metre, Peter C.; Bradley, Paul; Schmidt, Travis S.; Button, Daniel T.; Qi, Sharon L.