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USGS Washington Water Science Center

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Welcome to the United States Geological Survey

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.

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Regional Water Science Issues


Latest River Conditions:
Statewide Streamflow Table
Real-Time Map - ESRI Maps

Annual Data Reports:
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Water Science in the News

New Tools and Knowledge to Aid in Columbia Plateau Groundwater Management
A comprehensive USGS report provides new knowledge and tools to aid in the management of critical Columbia Plateau resources while coping with declines in groundwater levels and the uncertainties of climate change....(more)

Predicting Pesticides in Streams and Rivers: Where is Water Quality at Risk?
A new interactive mapping tool provides predicted concentrations for 108 pesticides in U.S. streams and rivers and identifies which streams are most likely to exceed water-quality guidelines....(more)

Low 2015 Snowpack and River Flows Studied to Provide Insight Into Future Droughts
USGS hydrologic technicians are currently taking measurements from hundreds of streams and rivers across the western United States as part of a low flow study....(more)

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SR 530 Landslide - Scientific Information

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Page Last Modified: Thursday, 09-Jul-2015 16:13:49 EDT