Unified Interior Regions

Washington

States L2 Landing Page Tabs

Filter Total Items: 259
Hydrogeologic framework of the Johns Creek subbasin and vicinity cover
Date Published: January 6, 2011
Status: Completed

Johns Creek Framework

Located in Mason County in western Washington State, Johns Creek is an important producer of coho and chum salmon. In 1984, the Washington State Department of Ecology established an Instream Resources Protection Program for Water Resource Inventory Area 14 (WAC 173-514) to retain sufficient in-stream flow to protect fish and wildlife, scenic, aesthetic and other environmental values. This...

Lake Crescent Cover
Date Published: January 6, 2011
Status: Completed

Lake Crescent

Lake Crescent in Olympic National Park is known for its clear, near-pristine water. Because the water is very low in plant nutrients, such as nitrogen and phosphorus, the lake is extremely susceptible to even small increases in nutrient levels, which could cause algal blooms and impact the health of three species of fish in the lake. Currently, the growth of bottom-dwelling algae in developed...

Contacts: Patrick Moran
Lynch Cove during low tide
Date Published: January 5, 2011
Status: Completed

Hood Canal

In September 2002, fish in Hood Canal near Hoodsport were under stress from low concentrations of dissolved oxygen, prompting the Washington State Department of Fish and Wildlife to temporarily close parts of Hood Canal to some types of fishing during the month of October. In 2003, low dissolved oxygen conditions worsened, some fish kills were observed as early as June, and by October large...

Contacts: Rich Sheibley
Numerical Simulation of Groundwater Flow for the Yakima River Basin Aquifer System Cover
Date Published: January 5, 2011
Status: Completed

Yakima River Basin

The Yakima River flows 215 miles from the outlet of Keechelus Lake in the central Washington Cascades southeasterly to the Columbia River, draining an area of 6,155 square miles. The Yakima River Basin is one of the most intensively irrigated areas in the United States. Population in the Yakima River Basin was about 238,000 in 1990.

Increasing demands for water for municipal, fisheries...

Groundwater Flow in the Columbia Plateau Regional Aquifer System Cover
Date Published: January 3, 2011
Status: Completed

Columbia Plateau Groundwater Availability Study

The Columbia Plateau Regional Aquifer System (CPRAS) covers about 44,000 square miles of eastern Oregon and Washington and western Idaho. The primary aquifers are basalts of the Columbia River Basalt Group and overlying basin-fill sediments. Groundwater availability issues in the basin include: 1) widespread water-level declines caused by pumping, 2) reduction in base flow to rivers and...

Bainbridge Island Report Cover
Date Published: January 2, 2011
Status: Completed

Bainbridge Island

Ground water is the sole source of drinking water for the City of Bainbridge Island in Kitsap County, Washington. As the population grows, demand for ground water grows, too. However, because ground water is limited by area and by the potential for seawater intrusion, the City recognizes in the Water Resources Element of its comprehensive plan that water resources must be carefully managed and...

Contacts: Lonna M Frans
Ground-Water Flow Model for the Spokane valley-Rathdrum Prairie Aquifer Report Cover
Date Published: January 2, 2011
Status: Completed

Quilcene Bay

In response to concerns that increased use of ground- and surface-water supplies in watersheds in Washington leaves insufficient in-stream flow for fish and other users, the Washington State legislature passed the Watershed Management Act of 1998, which encourages watershed planning at the local level. As part of this planning, stakeholders within a Water Resources Inventory Area (WRIA) need...

Contacts: Joseph Jones
Chehalis River Report Cover
Date Published: January 2, 2011
Status: Completed

Chehalis River Basin

The Chehalis River flows approximately 125 miles in southwestern Washington north-northwesterly to Grays Harbor and the Pacific Ocean, draining an area of approximately 2,700 square miles. The Chehalis River Basin is the second largest basin in Washington State. It is bounded on the west by the Pacific Ocean, on the east by the Deschutes River Basin, on the north by the Olympic Mountains, and...

Lake Roosevelt
Date Published: January 1, 2011
Status: Completed

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...

Numerical Simulation of the Groundwater-Flow System in Tributary Subbasins and Vicinity Cover
Date Published: January 10, 2010
Status: Completed

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...

Picture of Mt. Rainier over the Puyallup River
Date Published: January 2, 2010
Status: Completed

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 Report Cover
Date Published: January 15, 2009
Status: Completed

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...

Contacts: Mark Mastin
Filter Total Items: 715
Publication Thumbnail
Year Published: 2008

3D crustal structure and long-period ground motions from a M9.0 megathrust earthquake in the Pacific Northwest region

We have developed a community velocity model for the Pacific Northwest region from northern California to southern Canada and carried out the first 3D simulation of a Mw 9.0 megathrust earthquake rupturing along the Cascadia subduction zone using a parallel supercomputer. A long-period (<0.5 Hz) source model was designed by mapping the...

Olsen, K.B.; Stephenson, W.J.; Geisselmeyer, A.
3D crustal structure and long-period ground motions from a M9.0 megathrust earthquake in the Pacific Northwest region; 2008; Article; Journal; Journal of Seismology; Olsen, K. B.; Stephenson, W. J.; Geisselmeyer, A.

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Year Published: 2008

A prototype system for forecasting landslides in the Seattle, Washington, area

Empirical rainfall thresholds and related information form the basis of a prototype system for forecasting landslides in the Seattle area. The forecasts are tied to four alert levels, and a decision tree guides the use of thresholds to determine the appropriate level. From analysis of historical landslide data, we developed a formula for a...

Chleborad, Alan F.; Baum, Rex L.; Godt, Jonathan W.; Powers, Philip S.
A prototype system for forecasting landslides in the Seattle, Washington, area; 2008; Article; Book; Landslides and engineering geology of the Seattle, Washington, area; Chleborad, Alan F.; Baum, Rex L.; Godt, Jonathan W.; Powers, Philip S.

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Year Published: 2008

Baseline studies in the Elwha River ecosystem prior to dam removal: Introduction to the special issue

The planned removal of two dams that have been in place for over 95 years on the Elwha River provides a unique opportunity to study dam removal effects. Among the largest dams ever considered for removal, this project is compelling because 83% of the watershed lies undisturbed in Olympic National Park. Eighteen million cubic meters of sediment...

Duda, Jeffrey J.; Freilich, Jerry; Schreiner, Edward G.

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Year Published: 2008

Benthic invertebrates and periphyton in the Elwha river basin: Current conditions and predicted response to dam removal

The impending removal of two dams on the Elwha River in Washington State offers a unique opportunity to study ecosystem restoration at a watershed scale. We examine how periphyton and benthic invertebrate assemblages vary across regulated and unregulated sections of the Elwha River and across different habitat types, and establish baseline data...

Morley, S.A.; Duda, J.J.; Coe, H.J.; Kloehn, K.K.; McHenry, M.L.
Benthic invertebrates and periphyton in the Elwha river basin: Current conditions and predicted response to dam removal; 2008; Article; Journal; Northwest Science; Morley, S. A.; Duda, J. J.; Coe, H. J.; Kloehn, K. K.; McHenry, M. L.

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Year Published: 2008

Decreased mortality of lake michigan chinook salmon after bacterial kidney disease challenge: Evidence for pathogen-driven selection?

In the late 1960s, Chinook salmon Oncorhynchus tshawytscha from the Green River, Washington, were successfully introduced into Lake Michigan. During spring from1988 to 1992, large fish die-offs affecting Chinook salmon occurred in the lake. Multiple ecological factors probably contributed to the severity of the fish kills, but the only disease...

Purcell, M.K.; Murray, A.L.; Elz, A.; Park, L.K.; Marcquenski, S.V.; Winton, J.R.; Alcorn, S.W.; Pascho, R.J.; Elliott, D.G.
Decreased mortality of lake michigan chinook salmon after bacterial kidney disease challenge: Evidence for pathogen-driven selection?; 2008; Article; Journal; Journal of Aquatic Animal Health; Purcell, M. K.; Murray, A. L.; Elz, A.; Park, L. K.; Marcquenski, S. V.; Winton, J. R.; Alcorn, S. W.; Pascho, R. J.; Elliott, D. G.

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Year Published: 2008

Fish assemblage, density, and growth in lateral habitats within natural and regulated sections of Washington's Elwha River prior to dam removal

We characterized seasonal fish assemblage, relative density, and growth in river margins above and between two Elwha River dams scheduled for removal. Fish assemblage and relative density differed in the lateral habitats of the middle-regulated and upper-unregulated sections of the Elwha River. Rainbow trout was the numerically dominant salmonid...

Connolly, P.J.; Brenkman, S.J.
Fish assemblage, density, and growth in lateral habitats within natural and regulated sections of Washington's Elwha River prior to dam removal; 2008; Article; Journal; Northwest Science; Connolly, P. J.; Brenkman, S. J.

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Year Published: 2008

Influence of dams on river-floodplain dynamics in the Elwha River, Washington

The Elwha dam removal project presents an ideal opportunity to study how historic reduction and subsequent restoration of sediment supply alter river-floodplain dynamics in a large, forested river floodplain. We used remote sensing and onsite data collection to establish a historical record of floodplain dynamics and a baseline of current...

Kloehn, K.K.; Beechie, T.J.; Morley, S.A.; Coe, H.J.; Duda, J.J.
Influence of dams on river-floodplain dynamics in the Elwha River, Washington; 2008; Article; Journal; Northwest Science; Kloehn, K. K.; Beechie, T. J.; Morley, S. A.; Coe, H. J.; Duda, J. J.

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Year Published: 2008

Lower Methow tributaries intensive effectiveness monitoring study. Interim report

Actions have been taken to replace diversion dams in lower Beaver Creek with a series of rock vortex weirs. Some of these diversion dams have been in place for over 100 years, and they have impaired or completely blocked upstream migration of fish. Three diversion dams were replaced in 2003 (Lower Stokes, Thurlow Transfer, and Upper Stokes), and a...

Martens, Kyle D.; Connolly, Patrick J.

Filter Total Items: 855
August 7, 2015

C2 West Transect – 2015

Permanent Site: C2 West Transect; Depth: 16.6 Meters (Feet 54.5); Distance from river mouth: 0.7 Kilometers (0.5 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.147841,-123.57663268; Site Description: One of our deepest sites. Substrate is all muddy sand. Seaweed is absent. Lots of woody debris is present (0:42, 0:44, 0:53 seconds). Featherduster

...
August 7, 2015

H1 East Transect – 2015

Permanent Site: H1 East Transect; Depth: 5.5 Meters (Feet 18.2); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.1479177,-123.53472865; 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

...
August 7, 2015

C2 East Transect – 2015

Permanent Site: C2 East Transect; Depth: 16.3 Meters (Feet 53.4); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.147841,-123.57596074; Site Description: One of our deepest sites. Substrate is all muddy sand. Seaweed is absent. Some woody debris is seen (0:39 seconds). Featherduster tubeworms, mainly

...
August 7, 2015

H1 West Transect – 2015

Permanent Site: H1 West Transect; Depth: 5.7 Meters (Feet 18.6); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 4 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

...
August 6, 2015

GP1 East Transect – 2015

Permanent Control Site: GP1 East Transect; Depth: 7.3 Meters (24 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.11852521,-123.31538047; Site Description: This site was established as the eastern control. Depth is medium-shallow. Substrate is mainly a gravel/sand/cobble mixture surrounding

...
August 6, 2015

GP2 East Transect – 2015

Permanent Control Site: GP2 East Transect; Depth: 13.2 Meters (43.2 Feet); Distance from river mouth: 18.8 Kilometers (11.7 Miles) east; Pre/Post Dam Removal: 4 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 6, 2015

GP1 West Transect – 2015

Permanent Control Site: GP1 West Transect; Depth: 8.0 Meters (26.1 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 4 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 6, 2015

GP2 West Transect – 2016

Permanent Control Site: GP2 West Transect; Depth: 12.9 Meters (42.3 Feet); Distance from river mouth: 18.8 Kilometers (11.6 Miles) east; Pre/Post Dam Removal: 4 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. Red and brown

...
Juvenile wolf eel
August 6, 2015

Juvenile wolf eel

Juvenile wolf eel - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Location: Strait of Juan de Fuca,

...
August 5, 2015

D2 West Transect – 2015

Permanent Site: D2 West Transect; Depth: 12.7 Meters (41.7 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 4 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 and cobble. This year lots of dead clam shells (0:18, 0:32 seconds) are

...
August 5, 2015

D2 East Transect – 2015

Permanent Site: D2 East Transect; Depth: 12.1 Meters (39.8 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 4 years post-dam removal; Lat/Long: 48.15233001,-123.56829403; Site Description: This site is right off the mouth of the river. Substrate is mainly gravel. This year lots of dead clam shells (0:40, 1:03 seconds) are scattered along

...
Moon snails
August 5, 2015

Moon snails

Moon snails - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Location: USGS, Western Fisheries Research

...
Filter Total Items: 367
USGS
February 5, 2013

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.

USGS
October 23, 2012

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...

USGS
October 9, 2012

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. 

USGS
September 24, 2012

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. 

USGS
September 24, 2012

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.

Pre-dawn view from camp on east flank of Mount Rainier, Washington....
September 13, 2012

The location and depth of the the September 13, 2012 M 2.4 are entirely consistent with past Rainier earthquakes, and such events are considered by CVO and the PNSN be part of the background “normal” level of activity at Mount Rainier.

USGS
July 27, 2012

PORT ANGELES, Wash. — Scuba-diver scientists from the U.S. Geological Survey, with support teams from the U.S. Environmental Protection Agency, the Lower Elwha Klallam Tribe, and Washington Sea Grant, are returning to the mouth of Washington’s Elwha River this week to explore and catalogue the effect of released sediment on marine life following the nation’s largest dam removal effort.

USGS
June 21, 2012

SPOKANE, Wash. — Starting Friday, scientists will be using sound waves to look down into the Earth, and the result will be a picture of the geology beneath Spokane, perhaps including faults that cause shallow earthquakes.

USGS
May 8, 2012

PORTLAND, Ore.­–-Human activities, such as industrial production, transportation, and day-to-day living, are sources of many contaminants that flow into the Columbia River.

USGS
May 4, 2012

VANCOUVER, Wash. — 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.

USGS
February 29, 2012

SACRAMENTO, Calif.— Scientists at the U.S. Geological Survey have, for the first time, demonstrated how aquifer composition can affect how excessive levels of phosphorous (an essential nutrient contained in fertilizers) can be carried from fertilized agricultural fields via groundwater to streams and waterways.