Unified Interior Regions

Washington

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Filter Total Items: 259
Maps of the California maximum tsunami-inundation zone and land-cover data from the 2006 National Land Cover Database
Date Published: March 20, 2018
Status: Active

Tsunamis

The 2004 Indian Ocean, 2010 Chilean, and 2011 Tohoku disasters have shown how tsunamis are significant threats to coastal communities. To help U.S. coastal communities prepare for future tsunamis, the Hazards Vulnerability Team completed projects related to population exposure and sensitivity, pedestrian...

Percentage of employees, by sector, in MMI class VII to IX earthquake hazard zones related to the Tacoma earthquake scenario.
Date Published: March 20, 2018
Status: Active

Earthquakes

The U.S. Pacific Northwest is an active seismic zone, as evidenced by the 2001 Nisqually earthquake near Olympia (WA) and several other earthquakes in the 1990's. The Hazards Vulnerability Team worked with emergency managers and USGS earthquake researchers to better understand how communities are vulnerable to...

Volcano Evacuation Route Sign
Date Published: March 20, 2018
Status: Active

Volcanoes

As the 1980 Mount St. Helens eruption showed, volcanoes pose significant threats to U.S. communities. Potential hazards posed by U.S. volcanoes include tephra falls, pyroclastic flows and surges, VOG, ballistic projectiles, lahar and lava flows. In collaboration with researchers from the USGS Volcano Hazards Program, the...

Chambers-Clover Creek Report Cover
Date Published: March 8, 2018
Status: Active

Chambers-Clover Model

The Issue: In 1998, to address diminishing water availability and quality and the loss of critical habitat for fish and wildlife, Washington State enacted the Watershed Management Act. Under this Act, in the process of watershed planning for the Chambers-Clover Creek Watershed in Pierce County, Planning Unit members and partners uncovered gaps in data that would limit the...

Contacts: Wendy Welch
WFRC Strategic Plan FP Thumb
Date Published: February 26, 2018
Status: Active

WFRC Strategic Plan for Science 2015-2020

This strategic plan establishes a template for our science portfolio for the next five years.

Concentrations and Loads of Suspended Sediment and Nutrients Report Cover
Date Published: February 20, 2018
Status: Active

Central Columbia Plateau - Yakima River Basin

The Central Columbia Plateau/Yakima River Basin (CCYK) National Water-Quality Assessment (NAWQA) study unit is located in Central Washington, USA. The study unit is dominated by intensive agricultural practices, with irrigated agriculture a common practice for crop production (see study area description). Due to the intensive...

Contacts: Robert W Black
Hanford Site
Date Published: February 16, 2018
Status: Active

Hanford

Located on 586 square miles in southeastern Washington, the U.S. Department of Energy's (USDOE) Hanford Site was established during World War II as part of the Manhattan Project to produce plutonium for nuclear weapons. As a result of plutonium processing and operation of nine nuclear reactors, large volumes of liquid wastes have been generated and discharged to the ground.

The USDOE...

Nutrient and Suspended-Sediment Transport and Trends in the Columbia River and Puget Sound Basins Report Cover
Date Published: February 14, 2018
Status: Active

Puget Sound Basin NAWQA

The Puget Sound Basin (PUGT) study unit of the National Water Quality Assessment (NAWQA) program encompasses a 13,700-square-mile area that drains to Puget Sound and adjacent marine waters. Included in this region are all or part of 13 counties in western Washington, as well as the headwaters of the Skagit River and part of the Nooksack River in British Columbia, Canada. The Puget Sound Basin...

Contacts: Robert W Black
Section of Prospect Creek where stream has no flow
Date Published: February 1, 2018
Status: Active

Probability of Streamflow Permanence (PROSPER)

PRObability of Streamflow PERmanence (PROSPER)

Rivers and streams are constantly changing. Streamflows can change throughout the year and between years due to snowmelt, precipitation, diversions, and return flows. For many streams, these fluctuations determine whether a stream has year-round flow or not. PROSPER is a project initiated to better understand what causes these fluctuations...

Hydrogeologic framework, groundwater movement, and water budget in the Puyallup River Watershed and vicinity cover
Date Published: January 29, 2018
Status: Active

Characterization and Numerical Simulation of the Puyallup River Watershed

Groundwater is an important resource for domestic, commercial, and industrial usage in the Puyallup River Watershed, and groundwater discharge helps maintain late-summer and early-fall streamflow (baseflow) in many area streams. Consequently, as the population grows, and commercial and industrial activity increase, so does the demand for groundwater. However, the quantity of usable groundwater...

Simplified surficial geology of the Quincy Groundwater Subarea, Washington
Date Published: January 26, 2018
Status: Active

Quincy Groundwater

The Issue: Since 1952, water diverted from the Columbia River for irrigation in parts of the Quincy Subarea in eastern Washington has resulted in rising groundwater levels and increased groundwater flows and storage. Managers of groundwater in the area need a better understanding of the flow system before and after the start of irrigation.

How the USGS will help...

Contacts: Sue Kahle
Filter Total Items: 145
Orthoimagery of Augusta Ga
April 12, 2016

Orthoimagery data typically are high resolution aerial images that combine the visual attributes of an aerial photograph with the spatial accuracy and reliability of a planimetric map. The National Map offers public domain, 1-meter orthoimagery for the conterminous United States with many urban areas and other locations at 2-foot or finer resolution.

Small Scale Collection USA
April 12, 2016

The National Map offers a collection of small-scale datasets, most of which are at 1:1,000,000. The National Map publishes two data collections at one million-scale: one for Global Map users and one for National Map users. In terms of vector geometry, the lines, points, and areas in these data collections are identical. The difference is in the attributes assigned to these features.

Tephra and gas eruption from Mount St. Helens crater with dome
March 17, 2016

Many volcanoes in the U.S. are monitored by arrays of several instruments that detect subtle movements within the earth and changes in gas and water chemistry. The Volcano Hazards Program streams this data to its Volcano Observatories and makes it available on volcano-specific websites.

Ash-rich plume rises out of Halemaʻumaʻu Crater, Kilauea Volcano Hawaiʻi
March 4, 2016

Volcano-alert notifications are produced by Volcano Observatory scientists based on analysis of data from monitoring networks, direct observations, and satellite sensors. They are issued for both increasing and decreasing volcanic activity and include text about the nature of the unrest or eruption and about potential or current hazards and likely outcomes.

USGS
January 1, 2016

This part of the data release presents bathymetry data from the Elwha River delta collected in January 2015 using a kayak. The kayak was equipped with a single-beam echosounder and a survey-grade global navigation satellite system (GNSS) receiver.

USGS
January 1, 2016

This part of the data release presents bathymetry data from the Elwha River delta collected in July 2016 using two personal watercraft (PWCs). The PWCs were equipped with single beam echosounders and survey-grade global navigation satellite system (GNSS) receivers.

USGS
January 1, 2016

This part of the data release presents bathymetry data from the Elwha River delta collected in September 2014 using two personal watercraft (PWCs). The PWCs were equipped with single-beam echosounders and survey-grade global navigation satellite system (GNSS) receivers.

USGS
January 1, 2016

This part of the data release presents topography data from the Elwha River delta collected in July 2015. Topography data were collected on foot with global navigation satellite system (GNSS) receivers mounted on backpacks.

USGS
January 1, 2016

This part of the data release presents topography data from the Elwha River delta collected in September 2014. Topography data were collected on foot with global navigation satellite system (GNSS) receivers mounted on backpacks.

USGS
January 1, 2016

This part of the data release presents topography data from the Elwha River delta collected in January 2015. Topography data were collected on foot with global navigation satellite system (GNSS) receivers mounted on backpacks.

USGS
January 1, 2016

This part of the data release presents topography data from the Elwha River delta collected in February 2016. Topography data were collected on foot with global navigation satellite system (GNSS) receivers mounted on backpacks.

USGS
January 1, 2016

This part of the data release presents bathymetry data from the Elwha River delta collected in January 2015 using two personal watercraft (PWCs). The PWCs were equipped with single-beam echosounders and survey-grade global navigation satellite system (GNSS) receivers.

Filter Total Items: 716
Publication Thumbnail
Year Published: 2011

Coastal and lower Elwha River, Washington, prior to dam removal--history, status, and defining characteristics: Chapter 1 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal

Characterizing the physical and biological characteristics of the lower Elwha River, its estuary, and adjacent nearshore habitats prior to dam removal is essential to monitor changes to these areas during and following the historic dam-removal project set to begin in September 2011. Based on the size of the two hydroelectric projects and the...

Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.; Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.
Coastal and lower Elwha River, Washington, prior to dam removal--history, status, and defining characteristics: Chapter 1 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal; 2011; SIR; 2011-5120-1; Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal (SIR 2011-5120); Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.

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Year Published: 2011

Geomorphology of the Elwha River and its Delta: Chapter 3 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal

The removal of two dams on the Elwha River will introduce massive volumes of sediment to the river, and this increase in sediment supply in the river will likely modify the shapes and forms of the river and coastal landscape downstream of the dams. This chapter provides the geologic and geomorphologic background of the Olympic Peninsula and the...

Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.; Warrick, Jonathan A.; Draut, Amy E.; McHenry, Michael L.; Miller, Ian M.; Magirl, Christopher S.; Beirne, Matthew M.; Stevens, Andrew Stevens; Logan, Joshua B.
Geomorphology of the Elwha River and its Delta: Chapter 3 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal; 2011; SIR; 2011-5120-3; Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal (SIR 2011-5120); Warrick, Jonathan A.; Draut, Amy E.; McHenry, Michael L.; Miller, Ian M.; Magirl, Christopher S.; Beirne, Matthew M.; Stevens, Andrew Stevens; Logan, Joshua B.

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Year Published: 2011

Nearshore biological communities prior to the removal of the Elwha River dams: Chapter 6 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal

Increases in sediment delivery to coastal waters are expected following removal of dams on the Elwha River, Washington, potentially increasing sediment deposition on the seafloor and suspended sediment in the water column. Biological communities inhabiting shallow, subtidal depths (3–18 m) near the mouth of the Elwha River, between the west end of...

Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.; Rubin, Stephen P.; Miller, Ian M.; Elder, Nancy; Reisenbichler, Reginald R.; Duda, Jeffrey J.
Nearshore biological communities prior to the removal of the Elwha River dams: Chapter 6 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal; 2011; SIR; 2011-5120-6; Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal (SIR 2011-5120); Rubin, Stephen P.; Miller, Ian M.; Elder, Nancy ; Reisenbichler, Reginald R.; Duda, Jeffrey J.

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Year Published: 2011

Summary and anticipated responses to Elwha River dam removal: Chapter 9 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal

Starting in September 2011, the removal of two large dams on the Elwha River will begin an unprecedented river restoration project because of the size of the dams, the volume of sediment released, the pristine watershed upstream of the dam sites, and the potential for renewing salmon populations. Ecosystem studies of the Elwha watershed indicate...

Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.; Gelfenbaum, Guy; Duda, Jeffrey J.; Warrick, Jonathan A.
Summary and anticipated responses to Elwha River dam removal: Chapter 9 in Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal; 2011; SIR; 2011-5120-9; Coastal habitats of the Elwha River, Washington--biological and physical patterns and processes prior to dam removal (SIR 2011-5120); Gelfenbaum, Guy ; Duda, Jeffrey J.; Warrick, Jonathan A.

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Year Published: 2011

Hydrography of and biogeochemical inputs to Liberty Bay, a small urban embayment in Puget Sound, Washington

This multi-chapter report describes scientific and logistic understanding gained from a 2 year proof-of-concept study in Liberty Bay, a small urban embayment in central Puget Sound, Washington. The introductory chapter describes the regional and local setting, the high-level study goals, the site-specific urban stressors, and the interdisciplinary...

Takesue, Renee K.
Hydrography of and biogeochemical inputs to Liberty Bay, a small urban embayment in Puget Sound, Washington; 2011; SIR; 2011-5152; Takesue, Renee K.

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Year Published: 2011

A multi-year analysis of passage and survival at McNary Dam, 2004-09

We analyzed 6 years (2004–09) of passage and survival data collected at McNary Dam to determine how dam operations and environmental conditions affect passage and survival of juvenile salmonids. A multinomial logistic regression was used to examine how environmental variables and dam operations relate to passage behavior of juvenile...

Adams, Noah S.; Walker, C.E.; Perry, R.W.
A multi-year analysis of passage and survival at McNary Dam, 2004-09; 2011; OFR; 2011-1230; Adams, Noah S.; Walker, Christopher E.; Perry, Russell W.

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Year Published: 2011

Coastal habitats of the Elwha River, Washington- Biological and physical patterns and processes prior to dam removal

This report includes chapters that summarize the results of multidisciplinary studies to quantify and characterize the current (2011) status and baseline conditions of the lower Elwha River, its estuary, and the adjacent nearshore ecosystems prior to the historic removal of two long-standing dams that have strongly influenced river, estuary, and...

Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.
Coastal habitats of the Elwha River, Washington- Biological and physical patterns and processes prior to dam removal; 2011; SIR; 2011-5120; Duda, Jeffrey J.; Warrick, Jonathan A.; Magirl, Christopher S.

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Year Published: 2011

Summary of juvenile salmonid passage and survival at McNary Dam-Acoustic survival studies, 2006-09

Passage and survival data were collected at McNary Dam between 2006 and 2009. These data have provided critical information for resource managers to implement structural and operational changes designed to improve the survival of juvenile salmonids as they migrate past the dam. Given the importance of these annual studies, the primary objectives...

Adams, Noah S.; Evans, Scott D.
Summary of juvenile salmonid passage and survival at McNary Dam-Acoustic survival studies, 2006-09; 2011; OFR; 2011-1179; Edited by Adams, Noah S. ; Evans, Scott D.

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Year Published: 2011

Evaluation of angler effort and harvest of rainbow trout (Oncorhynchus mykiss), Lake Scanewa, Washington, 2010

A creel evaluation was conducted in Lake Scanewa, a reservoir on the Cowlitz River, to monitor catch rates of rainbow trout (Oncorhynchus mykiss) and determine if the trout fishery was having negative impacts on juvenile anadromous salmon (Oncorhynchus spp.) in the system. The trout fishery, which is supported by releases of 20,000 fish (2 fish...

Liedtke, Theresa L.; Kock, Tobias J.; Ekstrom, Brian K.; Tomka, Ryan G.; Rondorf, Dennis W.
Evaluation of angler effort and harvest of rainbow trout (Oncorhynchus mykiss), Lake Scanewa, Washington, 2010; 2011; OFR; 2011-1178; Liedtke, Theresa L.; Kock, Tobias J.; Ekstrom, Brian K.; Tomka, Ryan G.; Rondorf, Dennis W.

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Year Published: 2011

Composition and relative abundance of fish species in the lower White Salmon River, Washington, prior to the removal of Condit Dam

Information about the composition and relative abundance of fish species was collected by a rotary screw trap and backpack electrofishing in the lower White Salmon River, Washington. The information was collected downstream of Condit Dam, which is at river kilometer (rkm) 5.2, and is proposed for removal in October 2011. A rotary screw trap was...

Allen, M. Brady; Connolly, Patrick J.

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Year Published: 2011

Abundance, stock origin, and length of marked and unmarked juvenile Chinook salmon in the surface waters of greater Puget Sound

This study focuses on the use by juvenile Chinook salmon Oncorhynchus tshawytscha of the rarely studied neritic environment (surface waters overlaying the sublittoral zone) in greater Puget Sound. Juvenile Chinook salmon inhabit the sound from their late estuarine residence and early marine transition to their first year at sea. We measured the...

Rice, C.A.; Greene, C.M.; Moran, P.; Teel, D.J.; Kuligowski, D.R.; Reisenbichler, R.R.; Beamer, E.M.; Karr, J.R.; Fresh, K.L.
Abundance, stock origin, and length of marked and unmarked juvenile Chinook salmon in the surface waters of greater Puget Sound; 2011; Article; Journal; Transactions of the American Fisheries Society; Rice, C. A.; Greene, C. M.; Moran, P.; Teel, D. J.; Kuligowski, D. R.; Reisenbichler, R. R.; Beamer, E. M.; Karr, J. R.; Fresh, K. L.

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Year Published: 2011

Establishing spatial trends in water chemistry and stable isotopes (δ15N and δ13C) in the Elwha River prior to dam removal and salmon recolonization

Two high-head dams on the Elwha River in Washington State (USA) have changed the migratory patterns of resident and anadromous fish, limiting Pacific salmon to the lower 7.9 km of a river that historically supported large Pacific salmon runs. To document the effects of the dams prior to their removal, we measured carbon and nitrogen stable isotope...

Duda, J.J.; Coe, H.J.; Morley, S.A.; Kloehn, K.K.
Establishing spatial trends in water chemistry and stable isotopes (δ15N and δ13C) in the Elwha River prior to dam removal and salmon recolonization; 2011; Article; Journal; River Research and Applications; Duda, J. J.; Coe, H. J.; Morley, S. A.; Kloehn, K. K.

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Researchers set up block nets to perform population estimates
October 31, 2016

Researchers set up block nets to perform population estimates.

Sam Doak (center) and scientists from the Confederated Tribes and Bands of the Yakama Nation set up block nets to perform population estimates of fish in a pool on Rock Creek, WA. 

A woman crouches on dry river stones near the carcass of the skull and spine of a salmon.
September 23, 2016

Amy East discovers a salmon on Elwha

USGS geologist Amy East was delighted to observe a Chinook salmon carcass upstream from two dams recently removed from the Elwha River in Washington State. River restoration has allowed salmon to reach upstream spawning grounds for the first time in more than a century.

View from the sky looking down along a coastline with a silty river mouth protruding into the ocean with gentle waves at beach.
September 3, 2016

Elwha River mouth in September 2016

Aerial photograph of the mouth of the Elwha River showing sediment deposits from dam removal. Aerial assistance by LightHawk and plane piloted by Dr. Milton Bennett.

August 25, 2016

E2 East Transect – 2016

Permanent Site: E2 East Transect; Depth: 14.3 Meters (46.8 Feet); Distance from river mouth: 0.9 Kilometers (0.5 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.15653002,-123.56130401; Site Description: This is one of our deeper sites. Substrate is mainly gravel/cobble with an occasional boulder. A few brown acid kelps (Desmarestia spp. at 0:06 

...
August 25, 2016

E2 West Transect – 2016

Permanent Site: E2 West Transect; Depth: 14.6 Meters (47.8 Feet); Distance from river mouth: 0.9 Kilometers (0.5 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.15653002, -123.56197605; Site Description: This is one of our deeper sites. Substrate is mainly gravel/cobble with scattered boulders. A few small red and brown seaweeds, mainly acid kelp

...
August 24, 2016

J1 West Transect – 2016

Permanent Site: J1 West Transect; Depth: 9.8 Meters (32.3 Feet); Distance from river mouth: 6.6 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.13607725,-123.48002186; Site Description: This site is medium depth. Substrate is mainly a gravel/sand mixture. Both red (0:25 seconds) and brown seaweed growth is dense and appears to be

...
August 24, 2016

D2 West Transect – 2016

Permanent Site: D2 West Transect; Depth: 12.8 Meters (41.9 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 5 years post-dam removal Lat/Long: 48.15233001,-123.56896603; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel with some cobble. Dead clam shells are scattered everywhere (2:14 seconds).

...
August 23, 2016

GP1 East Transect – 2016

Permanent Control Site: GP1 East Transect; Depth: 7.5 m (24.7 feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long:; Site Description: This site was established as the eastern control. Depth is medium-shallow. Substrate is mainly a gravel/sand/cobble mixture surrounding numerous large boulders. Red (1

...
August 23, 2016

GP2 East Transect – 2016

Permanent Control Site: GP2 East Transect; Depth: 13.2 Meters (43.4 Feet); Distance from river mouth: 18.8 Kilometers (11.7 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.12781102,-123.31645664; Site Description: This site was established as the eastern control. Substrate is mainly a gravel sand mixture. A few large boulders are located off

...
August 23, 2016

GP1 West Transect – 2016

Permanent Control Site: GP1 West Transect; Depth: 7.9 m (25.9 feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.11852521,-123.31605203; Site Description: This site was established as the eastern control. Depth is medium-shallow. Substrate is mainly a gravel/sand/cobble mixture surrounding

...
August 23, 2016

GP2 West Transect – 2015

Permanent Control Site: GP2 West Transect; Depth: 13.0 Meters (42.6 Feet); Distance from river mouth: 18.8 Kilometers (11.6 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.12781102,-123.31712832; Site Description: This site was established as the eastern control. Substrate is mainly a gravel/sand/cobble mixture surrounding boulders. This year red

...
August 12, 2016

H1 West Transect – 2016

Permanent Site: H1 West Transect; Depth: 5.7 Meters (18.7 Feet); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 5 years post-dam removal; Lat/Long: 48.14803012,-123.53535558; Site Description: This is a shallow site and one of the farthest removed from the effects of the sediment plume outside of the control sites. Substrate is still

...
Filter Total Items: 368
USGS science for a changing world logo
May 1, 2015

SEATTLE, Wash. — More than 1,000 dams have been removed across the United States because of safety concerns, sediment buildup, inefficiency or having otherwise outlived usefulness. A paper published today in Science finds that rivers are resilient and respond relatively quickly after a dam is removed.

USGS
April 29, 2015

May 18th marks the 35th anniversary of the eruption of Mount St. Helens and the onset of volcanic activity from 1980 to 1986.  In commemoration, the U.S. Geological Survey Cascades Volcano Observatory will open its doors to the news media and the public on Saturday, May 2, 2015, from 10:00 a.m. to 5:00 p.m.

Image: Tsunami Evacuation Sign
April 13, 2015

Tens of thousands of people along the U.S. Pacific Northwest coastline may not have enough time to evacuate low-lying areas before tsunami waves arrive, according to a new publication by researchers at the U.S. Geological Survey, University of Colorado Boulder, and California State University, Sacramento.

USGS
March 23, 2015

Floodplains in the Puget Sound region can be managed to protect people and also increase the health of rivers, according to a new U.S. Geological Survey report. 

USGS
March 18, 2015

Decreases in freshwater withdrawn for irrigation and thermoelectric power led to a 15 percent overall decrease in freshwater use in Washington between 2005 and 2010, according to a report published today by the U. S. Geological Survey.

Members of 2013 Colombia-US Bi-national Exchange visit Mount Rainie...
February 24, 2015

Could what happened at Nevado del Ruiz in 1985 happen in the Pacific Northwest? And if it did, are we prepared?

Aerial photos of the Elwha River mouth before and during dam removal.
February 17, 2015

SEATTLE — The effects of dam removal are better known as a result of several new studies released this week by government, tribal and university researchers. The scientists worked together to characterize the effects of the largest dam removal project in U.S. history occurring on the Elwha River of Washington State.

Issue3.1January2015Thumb
February 2, 2015

Fish Health Research at the U.S. Geological Survey - Marrowstone Marine Field Station

Issue3.11November2015Thumb
February 2, 2015

Dam Removal and Salmon Response in the White Salmon River, WA

Filter Total Items: 160