Unified Interior Regions
Washington
Washington's Puget Sound is a complex ecosystem directly adjacent to a robust metropolitan area that scientists from the USGS Western Fisheries Research Center study. Recent surveys have looked at juvenile surf smelt, a key link in the food web that are consumed by predators such as salmon, orca, and many marine birds.
Western Fisheries Research Center
Research at the WFRC focuses on the environmental factors responsible for the creation, maintenance, and regulation of fish populations including their interactions in aquatic communities and ecosystems.
Go to CenterWashington Water Science Center
The Water Science Center's mission is to collect, analyze and disseminate the impartial hydrologic data and information needed to wisely manage water resources for the people of the United States and the State of Washington.
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Lake Roosevelt-Upper Columbia River
Lake Roosevelt was formed on the Columbia River by the construction of the Grand Coulee Dam, and extends a total of 217 km to within 24 km of Canada The lake is heavily contaminated with trace elements that were discharged as slag material from a smelter in Canada; approximately 360 metric tons were discharged per day from 1900 to 1998. A study by the USGS reported that Lake Roosevelt bed...
Skagit Ground Water Model
State and local water-resource managers in Lower Skagit/Samish Water Resource Inventory Area (WRIA-3) face two water-availability issues that are common throughout Washington State. First, they must reserve water for domestic wells that are exempt from the water rights system without harming river and stream ecosystems in the lower Skagit River basin. Skagit County, which would be responsible...
Mount Rainier Fluvial Geomorphology and River Sedimentation
To provide information for management efforts to reduce flooding and improve aquatic habitat in the Lower Puyallup River Basin (Puyallup, Carbon and White Rivers), Pierce County and other stakeholders are looking for river-system management options that consider the system's flood-carrying capacity and trends in sedimentation. To assist, the USGS is building a computerized hydraulic model of...
FEMA High Water Marks - Western Washington Flood, January 2009
The Issue: Significant flooding occurred throughout western Washington on January 7 and 8, 2009. As part of its Hazard Mitigation effort, the Federal Emergency Management Agency (FEMA) Region X needs documentation on the extent of flooding for verifying Preliminary Digital Flood Insurance Rate Maps (DFIRMs) and corresponding Flood Insurance Studies (FIS) that have been...
Moses Lake Sediment
Located in central Washington, Potholes Reservoir is a key feature of the Columbia Basin Project and serves as a vital source of irrigation water. Potholes Reservoir has traditionally been fed water through the East Low Canal, but due to operational changes over the years, the Bureau of Reclamation is looking for reliable alternatives to ensure an adequate portion of water supply to Potholes...
Lower Bonaparte Springs
The Issue: The Confederated Colville Tribes are concerned with maintaining and enhancing endangered summer steelhead fish stocks in the Okanogan River and its tributaries. One Okanogan River subbasin of particular interest is Bonaparte Creek where almost 50 percent of the summer steelhead captured in 2008 were of natural rather than hatchery stock. The Colville Tribes are working to ensure...
FEMA Technical Support
9722-DRE00 - FEMA Technical Support, Pre-Declaration, January 2009 Floods - Completed FY2009
A wide plume of warm moist air streaming in from west of Hawaii caused widespread rainfall throughout western Washington in early January 2009. National Weather Service flood stages were exceeded in many different basins, most of which drain from the west side of the Cascade Range. Flows at four...
WSDOT Stormwater Monitoring
The Washington State Department of Transportation, or WSDOT, monitors the water quality of runoff from state highways and other transportation facilities under their National Pollution Discharge Elimination System (NPDES) permit. The NPDES permit requires WSDOT to make sure that the stormwater meets Clean Water Act and other regulations designed to restore and protect our country's water...
Navigable Rivers in Washington
Determining whether a stream or river in Washington is "navigable" is important because it helps establish state ownership of the "bed and shore" of navigable waterways as stated in the Washington State constitution. State-owned lands are managed by the Washington State Department of Natural Resources. Because the constitution does not explicitly define what criteria should be used to...
Potholes Reservoir
Managed by the U.S. Bureau of Reclamation (USBR), water is diverted from the Columbia River into Potholes Reservoir and the canal system for delivery to irrigators.
Through the USGS/USBR collaborative Watershed and River Systems Management Program (WARSMP), the USBR will be developing a river-management model to improve the efficiency of water distribution. An important input needed for...
Mid-Columbia Habitat Project
To meet their dam licensing agreements, operators of privately owned dams are required to offset the unavoidable loss of endangered salmon passing the dam by restoring and enhancing streams and providing hatcheries. Finding suitable side channels is made difficult by subtle features and overgrowth.
To help the Mid-Columbia Tributary Committee identify sites for restoration and...
Green River Geomorphic Responses
In the Pacific Northwest, water, sediment, and vegetation primarily determine the form of large river channels and shape their ecosystems. Dams on rivers affect all of these elements, with consequences for habitats and aquatic species. Understanding how water, sediment, and vegetation interact in habitats is key to managing rivers. In the case of the middle Green River in King County,...
Snake River Fall Chinook Salmon life history investigations annual report, 2009
In 2009, we used radio and acoustic telemetry to evaluate the migratory behavior, survival, mortality, and delay of subyearling fall Chinook salmon in the Clearwater River and Lower Granite Reservoir. We released a total of 1,000 tagged hatchery subyearlings at Cherry Lane on the Clearwater River in mid August and we monitored them as they passed...
Tiffan, Kenneth F.; Connor, William P.; Bellgraph, Brian J.; Buchanan, Rebecca A.Snake River fall Chinook salmon life history investigations, annual report 2008
In 2009, we used radio and acoustic telemetry to evaluate the migratory behavior, survival, mortality, and delay of subyearling fall Chinook salmon in the Clearwater River and Lower Granite Reservoir. We released a total of 1,000 tagged hatchery subyearlings at Cherry Lane on the Clearwater River in mid August and we monitored them as they passed...
Tiffan, Kenneth F.; Connor, William P.; Bellgraph, Brian J.; Buchanan, Rebecca A.Characterization of the contents and histology of the gastrointestinal tracts of White Sturgeon (Acipenser transmontanus) captured from Upper Lake Roosevelt, Washington, October 2008
The gastrointestinal tracts of 37 juvenile white sturgeon (Acipenser transmontanus) captured from the upper part of Lake Roosevelt during October 2008, were examined to identify prey taxa and to determine if the fish were consuming smelter slag along with other sediments. Histological examination of the gastrointestinal tract tissues and...
Parsley, Michael J.; van der Leeuw, Bjorn K.; Elliott, Diane G.Water use trends in Washington, 1985-2005
Since 1950, the U.S. Geological Survey Washington Water Science Center (USGS-WAWSC) has collected, compiled, and published, at 5-year intervals, statewide estimates of the amounts of water withdrawn and used for various purposes in Washington State. As new data and methods became available, some of the original datasets were recompiled. The most...
Lane, R.C.Hydraulic alterations resulting from hydropower development in the Bonneville Reach of the Columbia River
We used a two-dimensional (2D) hydrodynamic model to simulate and compare the hydraulic characteristics in a 74-km reach of the Columbia River (the Bonneville Reach) before and after construction of Bonneville Dam. For hydrodynamic modeling, we created a bathymetric layer of the Bonneville Reach from single-beam and multi-beam echo-sounder surveys...
Hatten, James R.; Batt, Thomas R.Sediment management strategies associated with dam removal in the State of Washington
Different removal strategies are described for dams in three diverse drainage basins (Wind River, White Salmon River, and Elwha River basins) in the State of Washington (USA). The comparisons between the strategies offer the opportunity to track the effects of sediment resulting from dam decommissioning in the Pacific Northwest and to determine...
Magirl, C. S.; Connolly, P.J.; Coffin, B.; Duda, J.J.; Draut, A.E.Volcano collapse promoted by progressive strength reduction: New data from Mount St. Helens
Rock shear strength plays a fundamental role in volcano flank collapse, yet pertinent data from modern collapse surfaces are rare. Using samples collected from the inferred failure surface of the massive 1980 collapse of Mount St. Helens (MSH), we determined rock shear strength via laboratory tests designed to mimic conditions in the pre-collapse...
Reid, Mark E.; Keith, Terry E.C.; Kayen, Robert E.; Iverson, Neal R.; Iverson, Richard M.; Brien, DianneInfluence of a low intensity electric sea lion deterrence system on the migratory behavior of fishes in the upstream migrant tunnel (UMT) at Bonneville Dam.
Predation by pinnipeds, such as California sea lions (Zalophus alifornianus), Pacific harbor seals (Phoca vitulina), and Stellar sea lions (Eumetopias jubatus) on returning adult Pacific salmon (Oncorhynchus spp.) in the Columbia River basin has become an increasing concern for fishery managers trying to conserve and restore threatened and...
Mesa, Matthew G.; Dixon, Christopher J.Extended abstracts from the Coastal Habitats in Puget Sound (CHIPS) 2006 Workshop
Puget Sound is the second largest estuary in the United States. Its unique geology, climate, and nutrient-rich waters produce and sustain biologically productive coastal habitats. These same natural characteristics also contribute to a high quality of life that has led to a significant growth in human population and associated development. This...
Gelfenbaum, Guy R.; Fuentes, Tracy L.; Duda, Jeffrey J.; Grossman, Eric E.; Takesue, Renee K.Columbia River Project Water Use Plan. Mid Columbia River Sturgeon Incubation and Rearing Study (Year 1)
No abstract available
Parsley, M.Elwha River dam removal: A major opportunity for salmon and steelhead recolonization
In this in-depth paper, authors George R. Pess, Gary A. Winans and Timothy J. Beechie of the NOAA Fisheries, Northwest Fisheries Science Center in Seattle, Samuel J. Brenkman of the National Park Service, Olympic National Park, Michael L. McHenry of the Lower Elwha Klallam Tribe and Jeffrey J. Duda of the U.S. Geological Survey, Western Fisheries...
Pess, George R.; Brenkman, Samuel J.; Winans, Gary A.; McHenry, Michael L.; Duda, Jeffrey J.; Beechie, Timothy J.Faunal assemblages and multi-scale habitat patterns in headwater tributaries of the South Fork Trinity River - an unregulated river embedded within a multiple-use landscape
Headwaters can represent 80% of stream kilometers in a watershed, and they also have unique physical and biological properties that have only recently been recognized for their importance in sustaining healthy functioning stream networks and their ecological services. We sampled 60 headwater tributaries in the South Fork Trinity River, a 2,430 km2...
Welsh, H.H.; Hodgson, G.R.; Duda, J.J.; Emlen, J.M.Earthquakes at Mount St. Helens from Mar. 14, 2016 - May 4, 2017
Map view plot of earthquakes located by the Pacific Northwest Seismic Network from March 14, 2016 through May 4, 2016. Only high-quality locations are shown (8 or more observations with a 130 degree gap or less between observing stations).
USGS-CVO crew digs out Mount St. Helens' Sep. Lobe monitoring station.
During the first few days of Mount St. Helen's earthquake swarm in March 2016, the September Lobe monitoring station (located on the 1980-86 dome) was buried in deep snow and not transmitting data. USGS-Cascades Volcano Observatory Technicians Kelly Swinford and Amberlee Darold dug out the station on March 30, restoring data flow and improving our ability to monitor the
...Tidal marsh, Billy Frank Jr. Nisqually National Wildlife Refuge, WA.
A tidal marsh at Billy Frank Jr. Nisqually National Wildlife Refuge, WA.
Headscarp of Red Bluffs Landslide Overlooking Crescent Lake Landslide
View out over the Crescent Lake landslide from the headscarp (left foreground) of the Red Bluffs landslide, looking toward Stevenson, Washington and the Columbia River.
USGS scientist and GeoGirls viewing Mount St. Helens
USGS scientists Kate Allstadt and Cynthia Gardner tell the story of the May 18, 1980 eruption of Mount St. Helens and how the catastrophic landslide, lateral blast, and lahar changed the landscape.
Bathymetry data of Columbia River mouth
Bathymetry data of Columbia River mouth, derived from an interferometric swath bathymetry systems survey in 2013. A) Swath map of data; B-E) sample detail pull-outs
Debris flow in channel near Butte Camp, Mount St. Helens, WA.
Debris flow in channel near Butte Camp, Mount St. Helens, Washington.
Small debris flows originating above Butte Camp, Mount St. Helens, WA
Path of small debris flows originating above Butte Camp, Mount St. Helens, Washington.
Scientist stands on the bank of a still river
USGS hydrologist Mark Reid looks at one of the many grabens (extensional basins) that formed as the Oso landslide swept across the North Fork Stillaguamish River valley.
K1 West Transect – 2015
Permanent Site: K1 West Transect; Depth: 6.0 Meters (19.8 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.13592923,-123.51082988; Site Description: This is a shallow site. Sediment is a gravel/sand mixture. Both red (1:30 seconds) and brown seaweed was abundant and appears close to pre-dam
A2 West Transect – 2015
Permanent Site: A2 West Transect; Depth: 12.9 Meters (Feet 42.3); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.14130295, -123.5883331; Site Description: One of our deeper sites at over 40 feet. Sediment is primarily sand/sandy mud with a few scattered boulders. Seaweeds have returned but are sparse and
A2 East Transect – 2015
Permanent Site: A2 East Transect; Depth: 12.4 Meters (Feet 40.8); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.14130295, -123.58766124; Site Description: One of our deeper sites at over 40 feet. Sediment is primarily sand/sandy mud. Seaweeds have returned, mainly bull kelp Nereocystis luetkeana (0:14, 0
The U.S. Geological Survey's Western Fisheries Research Center (WFRC), headquartered in Seattle, has led cutting-edge research on fish and aquatic environments for nearly 80 years – first in the Pacific Northwest, then nationwide and throughout the world.
For about one month, an airplane operated under contract to the U.S. Geological Survey will be making low-level flights over a 1000-square-mile area centered over Spokane and including parts of eastern Washington and western Idaho.
May is Volcano Awareness Month in Washington state. While no volcanoes in Washington currently show indications of immediate reawakening, experience has taught us that volcanoes often give just a few days' warning before an eruption begins. Monitoring Washington’s volcanoes and developing eruption response plans are important tasks for volcano scientists and public officials.

Meet scientists of the USGS Volcano Science Center and learn more about their jobs as they watch over 161 known active volcanoes within the US and its territories.
The U.S. Geological Survey Cascades Volcano Observatory is cancelling its planned May 4th public open house due to to the federal budget sequestration.
New scientific findings published in Ecology reveal that interactions of climate, soils, shrubs, and a natural nitrogen fertilization process affect regrowth of forests following wildfire in southern Oregon and northern California. Managers can use this information to consider post-fire management practices, including fertilization and shrub-removal.
Floodplain managers downstream of Mount Rainier are using information in a report recently published by the U.S. Geological Survey to manage flood risks in their communities.
Geologic barriers, the intermixing of water between aquifers through wells, and groundwater pumping contribute to the pattern of declines of groundwater levels of the Columbia Plateau, according to a report published by the U.S. Geological Survey.
SANTA CRUZ, Calif. — The largest dam-removal project in history has increased river water cloudiness caused by suspended particles, known as turbidity, a process that could affect aquatic life. The dismantling of two large dams on the Elwha River in Washington began in September of last year and has increased river turbidity significantly, even though most of the sediment trapped behind the...
TACOMA, Wash. — Water management in the Chamokane Creek Basin can now be guided by a new computer model to run "what-if" simulations to evaluate the potential effects of groundwater withdrawals on streamflows in the basin, according to a report released today by the U. S. Geological Survey.
SEATTLE — The U.S. Geological Survey has named fish pathologist Dr. Jill Rolland the director of its Western Fisheries Research Center (WFRC), headquartered in Seattle.
TACOMA, Wash. — Roughly enough sediment to fill a football field to the height of six Space Needles is delivered into the Puget Sound each year through a complex delivery network of rivers, according to a fact sheet published by the U.S. Geological Survey. The sediment delivery has both positive and negative effects on the environment, with some significant unknowns.
Western Fisheries Research Center
Research at the WFRC focuses on the environmental factors responsible for the creation, maintenance, and regulation of fish populations including their interactions in aquatic communities and ecosystems.
Go to CenterWashington Water Science Center
The Water Science Center's mission is to collect, analyze and disseminate the impartial hydrologic data and information needed to wisely manage water resources for the people of the United States and the State of Washington.
Go to Center