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Filter Total Items: 715
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Year Published: 2003

Identification of a genetic marker that discriminates ocean-type and stream-type chinook salmon in the Columbia River basin

A marker based on randomly amplified polymorphic DNA (RAPD), OT-38, was discovered that nonlethally discriminates between stream-type and ocean-type populations of chinook salmon Oncorhynchus tshawytscha in the Columbia River basin, including the threatened fall-run (ocean-type) and spring-run (stream-type) Snake River populations. This marker was...

Rasmussen, C.; Ostberg, C.O.; Clifton, D.R.; Holloway, J.L.; Rodriguez, R.J.
Identification of a genetic marker that discriminates ocean-type and stream-type chinook salmon in the Columbia River basin; 2003; Article; Journal; Transactions of the American Fisheries Society; Rasmussen, C.; Ostberg, C. O.; Clifton, D. R.; Holloway, J. L.; Rodriguez, R. J.

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Year Published: 2003

Identification of larval Pacific lampreys (Lampetra tridentata), river lampreys (L. ayresi), and western brook lampreys (L. richardsoni) and thermal requirements of early life history stages of lampreys. Annual report 2002-2003

Two fundamental aspects of lamprey biology were examined to provide tools for population assessment and determination of critical habitat needs of Columbia River Basin (CRB) lampreys (the Pacific lamprey, Lampetra tridentata, and the western brook lamprey, L. richardsoni). We evaluated the usefulness of current diagnostic characteristics for...

Meeuwig, M.H.; Bayer, J.M.; Seelye, J.G.; Reiche, R.A.

Publication Thumbnail
Year Published: 2003

Impacts of the Columbia River hydroelectric system on main-stem habitats of fall chinook salmon

Salmonid habitats in main-stem reaches of the Columbia and Snake rivers have changed dramatically during the past 60 years because of hydroelectric development and operation. Only about 13% and 58% of riverine habitats in the Columbia and Snake rivers, respectively, remain. Most riverine habitat is found in the upper Snake River; however, it is...

Dauble, D.D.; Hanrahan, T.P.; Geist, D.R.; Parsley, M.J.
Impacts of the Columbia River hydroelectric system on main-stem habitats of fall chinook salmon; 2003; Article; Journal; North American Journal of Fisheries Management; Dauble, D. D.; Hanrahan, T. P.; Geist, D. R.; Parsley, M. J.

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Year Published: 2003

Lateral line pore diameters correlate with the development of gas bubble trauma signs in several Columbia River fishes

Gas bubble trauma (GBT) caused by gas supersaturation of river water continues to be a problem in the Columbia River Basin. A common indicator of GBT is the percent of the lateral line occluded with gas bubbles; however, this effect has never been examined in relation to lateral line morphology. The effects of 115, 125 and 130% total dissolved gas...

Morris, R.G.; Beeman, J.W.; VanderKooi, S.P.; Maule, A.G.
Lateral line pore diameters correlate with the development of gas bubble trauma signs in several Columbia River fishes; 2003; Article; Journal; Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology; Morris, R. G.; Beeman, J. W.; VanderKooi, S. P.; Maule, A. G.

Publication Thumbnail
Year Published: 2003

Mapping the spatial distribution and time evolution of snow water equivalent with passive microwave measurements

This paper presents an algorithm that estimates the spatial distribution and temporal evolution of snow water equivalent and snow depth based on passive remote sensing measurements. It combines the inversion of passive microwave remote sensing measurements via dense media radiative transfer modeling results with snow accumulation and melt model...

Guo, J.; Tsang, L.; Josberger, E.G.; Wood, A.W.; Hwang, J.-N.; Lettenmaier, D.P.
Mapping the spatial distribution and time evolution of snow water equivalent with passive microwave measurements; 2003; Article; Journal; IEEE Transactions on Geoscience and Remote Sensing; Guo, J.; Tsang, L.; Josberger, E. G.; Wood, A. W.; Hwang, J. -N.; Lettenmaier, D. P.

Publication Thumbnail
Year Published: 2003

Migration behavior of juvenile salmonids and evaluation of a modified flume entrance at Cowitz Falls Dam, Washington, 2001

Historically, the Cowlitz River watershed supported abundant runs of anadromous salmonids. The completion of the surface collection system and fish facility at the Cowlitz Falls Dam presented a unique opportunity to restore anadromous salmonids to the upper Cowlitz River watershed. Collecting smolts at Cowlitz Falls Dam, or before they enter the...

Farley, M.J.; Perry, R.W.; Shurtleff, D.J.; Feil, D.H.; Rondorf, D.W.

Filter Total Items: 858
Steam vent near 1980-1986 dome, in the crater of Mount St. Helens....
August 6, 2013

Steam vent near 1980-1986 dome, in the crater of Mount St. Helens.

Steaming continues on the 1980-1986 dome. View to the south and the east arm of Crater Glacier.

Fumerole near Mount St. Helens' 1980-86 dome maintains hole in Crat...
August 6, 2013

Fumerole near Mount St. Helens' 1980-86 dome

A fumerole near the 1980-86 dome keeps an open hole in the east arm of Crater Glacier. The hole is approximately 12 m (40 ft) in diameter, easily wide enough to hold a school bus and deep enough so you could not see the bus' top. View to the south.

Monitoring channel erosion and aggradation, Mount St. Helens (North...
August 6, 2013

Monitoring channel erosion and aggradation, Mount St. Helens (North...

Fieldwork includes direct observations of changes to streams and stream beds to determine how changes will affect the downstream transportation of sediments. Here, the braided North Fork Toutle (left) joins Carbonate Springs Creek (right). View to the east.

August 1, 2013

C1 West Transect – 2013

Permanent Site: C1 West Transect; Depth: Meters (Feet); Distance from river mouth: 0.7 Kilometers (0.4 Miles); Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.14525225,-123.57361291; Site Description: Substrate is entirely sand. All seaweeds are absent. Woody debris is scattered along entire transect (0:21 0:34, 0:59 seconds). Invertebrates are scarce with the

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July 31, 2013

F2 West Transect – 2013

Permanent Site: F2 West Transect; Depth: 12.3 Meters (40.3 Feet); Distance from river mouth: 1.5 Kilometers (0.9 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15672004,-123.55036603; Site Description: Substrate is mainly gravel mixed with a little cobble and an occasional boulder. Only remaining seaweeds are the dead stalks of the perennial

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July 30, 2013

K1 East Transect – 2013

Permanent Site: K1 East Transect; Depth: 6.2 Meters (20.4 Feet) & 6.6 Meters (21.5 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13592923,-123.5101581; Site Description: This is a shallow site. Sediment is a gravel/sand mixture. This video includes footage from surveys conducted both on 

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July 30, 2013

K1 West Transect – 2013

Permanent Site: K1 West Transect; Depth: 5.8 Meters (19 Feet) & 5.6 Meters (18.4 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13592923,-123.51082988; Site Description: This is a shallow site. Sediment is a gravel/sand mixture. This video includes footage from surveys conducted both on 

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July 29, 2013

A2 East Transect – 2013

Permanent Site: A2 East Transect; Depth: 12.8 Meters (Feet 42); Distance from river mouth: Kilometers 1.8 (1.1 Miles); Pre/Post Dam Removal: 2 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 are absent this year. Woody debris is seen on transect for the

...
July 23, 2013

H1 East Transect – 2014

Permanent Site: H1 East Transect; Depth: 5.5 Meters (Feet 17.8); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 3 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

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Field Studies at Mount St. Helens...
July 19, 2013

Field Studies at Mount St. Helens

Center for the Study of Active Volcanoes (CSAV) students Javier Pacheco (Costa Rica) and Syegi Kunrat (Indonesia) participate in field studies at Mount St. Helens.

Teachers take a guided walk on the Hummocks Trail at Mount St. Hele...
June 25, 2013

Teachers take a guided walk on the Hummocks Trail at Mount St. Helens

Teachers take a guided walk on the Hummocks Trail, learning about the depositional features of the May 18, 1980 eruption.

Teachers learn about hummocks at Mount St. Helens workshop....
June 24, 2013

Teachers learn about hummocks at Mount St. Helens workshop.

Todd Cullings, with the Mount St. Helens National Volcanic Monument, leads teachers in activities they can do with students before hiking the Hummocks Trail.

Filter Total Items: 353
USGS
April 10, 1998

Properly assessing the impacts of powerful storms associated with El Nino which have brought unprecedented erosion to the United States’ west coast is an enormous task. NASA , the U. S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA) are combining efforts to provide public officials with the tools they need to accurately assess coastal erosion.

USGS
November 21, 1997

Want to give someone special an unusual gift this holiday season? Then you should visit the Earth Science and National Forest Information Center (ESNFIC) of the U.S. Geological Survey (USGS) and the U.S. Forest Service (USFS) in Spokane.

USGS
October 7, 1997

The U.S. Geological Survey has reorganized its western fishery research programs and renamed its biological research facility at Seattle, Wash., to reflect the changes.

USGS
August 6, 1997

The volcanic processes that created Mount Rainier and may pose a hazard to some residents of the Pacific Northwest are highlighted in a new exhibit that will be unveiled at the Sunrise Visitor Center in Mount Rainier National Park, on Saturday, August 9, 1997.

USGS
June 24, 1997

Faults which scientists say are capable of generating earthquakes of magnitude 7.0 or larger in the Pacific Northwest, will come under close scrutiny this week, as the U.S. Geological Survey continues a project to learn more about faults that lie beneath the Puget Sound lowlands.

USGS
June 24, 1997

On Friday, June 27, at 9 a.m. at the Chinook Landing Marina, along the Hylebos Waterway in north Tacoma, reporters can experience a U.S. Geological Survey research project that is currently underway in the Puget sound between Olympia and Whidby Island.

USGS
June 16, 1997

Residents of the Puget Sound area should not be alarmed when they see a small airplane flying low, back and forth over their communities during the next few weeks, according to scientists with the U.S. Geological Survey.

USGS
May 27, 1997

Scientists from the U.S. Geological Survey, the Geological Survey of Canada and several universities in both countries are preparing for a 1998 scientific project that will greatly advance the understanding of hazards from shallow earthquakes in the region of Puget Sound and Georgia Strait.

USGS
May 14, 1997

Dr. Gordon Eaton, Director of the U.S. Geological Survey, Reston, Va., will be one of the featured speakers at the Saturday, May 17, dedication of the Johnston Ridge Observatory in the Mount St. Helens National Volcanic Monument.

USGS
May 14, 1997

On Saturday, May 17, 1997, representatives of the U.S. Forest Service, the U.S. Geological Survey and the State of Washington will gather on a ridge on the north slope of Mount St. Helens to dedicate the "Johnston Ridge Observatory of the Mount St. Helens National Volcanic Monument."

USGS
April 11, 1997

As part of a continuing expanded partnership with private industry, the U.S. Geological Survey has contracted with NIES Mapping Group, Inc., of Bellevue, Wash., to produce digital orthophoto quadrangles.

USGS
February 13, 1997

China and Indonesia suffered the deadliest and most destructive earthquakes in 1996, while the U.S. remained relatively quiet according to scientists at the U.S. Geological Survey, Department of the Interior. The last deadly earthquake in the U.S. was the 1994 Northridge, Calif., quake that took 60 lives.