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Filter Total Items: 710
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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.

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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.

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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.

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Year Published: 2003

Swimming performance and physiological responses to exhaustive exercise in radio-tagged and untagged Pacific lampreys

Populations of Pacific lamprey Lampetra tridentata have declined in the Columbia River basin. One factor that may have contributed to this reduction in population size is an excessive use of energy by adult lampreys as they negotiate fishways at dams during spawning migrations. To gain an understanding of the performance capacity of Pacific...

Mesa, M.G.; Bayer, J.M.; Seelye, J.G.
Swimming performance and physiological responses to exhaustive exercise in radio-tagged and untagged Pacific lampreys; 2003; Article; Journal; Transactions of the American Fisheries Society; Mesa, M. G.; Bayer, J. M.; Seelye, J. G.

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Year Published: 2003

Three-dimensional fish tracking to evaluate the removable spillway weir at Lower Granite Dam during 2002, Annual report 2002

Abstract not available

Cash, K.M; Hatton, T.W; Jones, E.C.; Magie, R.J.; Mayer, K.C.; Swyers, N.M.; Adams, N.S; Rondorf, D.W.

Filter Total Items: 857
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.

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

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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.

Scientists kneeling in water, taking samples
April 29, 2013

Collecting Benthic Invertebrates

USGS scientists, Steve Rubin and Karl Stenberg, collecting samples to determine the distribution of benthic invertebrates in the Skagit River delta during an extreme low-tide. Information on the distribution and abundance of invertebrates will help resource managers better understand how fish, such as Chinook salmon use the delta.

Filter Total Items: 344
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.

USGS
February 12, 1997

A special symposium, "Integrating Watershed Ecosystem Studies for Improved Natural Resource Management" will be presented in Seattle, WA, on February 15 as part of the annual meeting of the American Association for the Advancement of Science (AAAS).

USGS
January 3, 1997

The floods have crested and are beginning to recede in most places in the Pacific Northwest. Nevertheless dozens of U.S. Geological Survey personnel, who were busy over the holidays measuring the high streamflows and keeping river stage monitors operating, are still busy in the field and in their offices. Field crews have been hampered by mudslides, road closures, and extremely dangerous condition

USGS
December 12, 1996

An earthquake generated by two tectonic plates sliding past one another in the Pacific Northwest could be as large as magnitude 9, according to scientists with the U.S. Geological Survey.

USGS
September 9, 1996

Measurements of the volume and rate of flows of the flooding Potomac River will be made on the 14th St. Bridge beginning at about 10:30 a.m. Monday (Sept. 9, 1996) by the U.S. Geological Survey. Measuring efforts by the USGS using special cranes and weights will continue for several hours.

USGS
November 30, 1995

Flood waters are peaking and beginning to recede in the Seattle-Tacoma, Washington, area according to streamflow specialists of the U.S. Geological Survey (USGS), a science agency of the Department of the Interior.