Washington Water Science Center


This is your direct link to all kinds of water resource information. Here you'll find information on Washington's rivers and streams. You'll also find information about groundwater, water quality, and many other topics. The USGS operates the most extensive satellite network of stream-gaging stations in the state, many of which form the backbone of flood-warning systems.

Current Washington Water Conditions

Current Washington Water Conditions

Explore real-time Washington streamflow, groundwater, and water-quality conditions and access data with our new interactive map application.

Current Conditions


Date published: September 2, 2020

Lending a Hand During COVID-19: Maintaining a Streamgage on the Canadian Border

When USGS personnel were prevented from accessing one of our streamgages along the U.S.-Canadian border, the Water Survey of Canada stepped in to help clear debris from our streamgage and ensure it was collecting accurate data.

Date published: August 17, 2020

FLOwPER User’s Guide—For Collection of FLOw PERmanence Field Observations

USGS and USFS develop a mobile application field form for rapid collection of flow/no flow observations.


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Year Published: 2021

Inclusion of pesticide transformation products is key to estimating pesticide exposures and effects in small U.S. streams

Improved analytical methods can quantify hundreds of pesticide transformation products (TPs), but understanding of TP occurrence and potential toxicity in aquatic ecosystems remains limited. We quantified 108 parent pesticides and 116 TPs in more than 3 700 samples from 442 small streams in mostly urban basins across five major regions of the...

Mahler, Barbara; Nowell, Lisa H.; Sandstrom, Mark W.; Bradley, Paul; Romanok, Kristin; Konrad, Christopher; Van Metre, Peter

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Year Published: 2021

Exploring biophysical linkages between coastal forestry management practices and aquatic bivalve contaminant exposure

Terrestrial land use activities present cross-ecosystem threats to riverine and marine species and processes. Specifically, pesticide runoff can disrupt hormonal, reproductive, and developmental processes in aquatic organisms, yet non-point source pollution is difficult to trace and quantify. In Oregon, U.S.A., state and federal forestry pesticide...

Scully-Engelmeyer, Kaegan; Granek, Elise F.; Nielsen-Pincus, Max; Lanier, Andy; Rumrill, Steven S; Moran, Patrick W.; Nilsen, Elena; Hladik, Michelle; Pillsbury, Lori

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Year Published: 2021

Identifying geomorphic process domains in the synthetic landscapes of West Virginia, USA

Human activities such as mining, agriculture, and urbanization have resulted in severe, large‐scale alteration to landform organization and associated geomorphic processes. The mountaintop mining (MTM) region of West Virginia, USA has experienced dramatic topographic alteration, by removing steep slopes and introducing plateau‐like areas at...

Jaeger, Kristin; Ross, Matthew V