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Filter Total Items: 712
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Year Published: 2004

Prevalence of the parasitic copepod Haemobaphes intermedius on juvenile buffalo sculpins from Washington State

The parasitic copepod, Haemobaphes intermedius, was detected in 62% of juvenile buffalo sculpins Enophrys bison, a previously unreported host, from the San Juan Islands archipelago in Washington State. Most infestations were characterized by the presence of a single female copepod infestations with multiple H. intermedius occurred either...

Halpenny, C.M.; Kocan, R.M.; Hershberger, P.K.
Prevalence of the parasitic copepod Haemobaphes intermedius on juvenile buffalo sculpins from Washington State; 2004; Article; Journal; Journal of Aquatic Animal Health; Halpenny, C. M.; Kocan, R. M.; Hershberger, P. K.

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Year Published: 2004

Probabilistic assessment of precipitation-triggered landslides using historical records of landslide occurrence, Seattle, Washington

Ninety years of historical landslide records were used as input to the Poisson and binomial probability models. Results from these models show that, for precipitation-triggered landslides, approximately 9 percent of the area of Seattle has annual exceedance probabilities of 1 percent or greater. Application of the Poisson model for estimating the...

Coe, Jeffrey A.; Michael, J.A.; Crovelli, R.A.; Savage, William U.; Nashem, W.D.; Laprade, W.T.

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Year Published: 2004

Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus), coastal cutthroat trout (O. clarki clarki) and interspecific hybrids

Hybridization between sympatric species provides unique opportunities to examine the contrast between mechanisms that promote hybridization and maintain species integrity. We surveyed hybridization between sympatric coastal steelhead (Oncorhynchus mykiss irideus) and coastal cutthroat trout (O. clarki clarki) from two streams in Washington State,...

Ostberg, C.O.; Slatton, S.L.; Rodriguez, R.J.
Spatial partitioning and asymmetric hybridization among sympatric coastal steelhead trout (Oncorhynchus mykiss irideus), coastal cutthroat trout (O. clarki clarki) and interspecific hybrids; 2004; Article; Journal; Molecular Ecology; Ostberg, C. O.; Slatton, S. L.; Rodriguez, R. J.

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Year Published: 2004

Tailrace Egress of yearling and subyearling Chinook salmon and juvenile steelhead following juvenile bypass system passage at John Day Dam, 2002

No abstract available.

Smith, C.D.; Liedtke, Theresa L.; Hausmann, B.J.; Schei, Jacquelyn L.; Lyng, J.R.; Gee, L.P.; Beeman, John W.

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Year Published: 2004

Water temperature effects on fall Chinook salmon in the Snake and Columbia Rivers

Abstract not available 

Haskell, C.A.; Tiffan, K.T.; Koch, R.C.; Heinz, J.A.; Mesa, M.G.; Rondorf, D.W.

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Year Published: 2004

White sturgeon mitigation and restoration in the Columbia and Snake rivers upstream from Bonneville Dam, Annual progress report April 2002 - March 2003. Report C

During 1 April 2002 through 31 March 2003, the U.S. Geological Survey (USGS) continued work on several tasks, including quantifying habitat suitable for white sturgeon Acipenser transmontanus spawning, a long-term survey of young-of-the-year (YOY) white sturgeon recruitment in the lower Columbia River, and a laboratory study investigating...

Gadomski, D.M.; Parsley, M.J.; Kofoot, P.

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Year Published: 2004

Depth to the Juan De Fuca slab beneath the Cascadia subduction margin - a 3-D model for sorting earthquakes

We present an updated model of the Juan de Fuca slab beneath southern British Columbia, Washington, Oregon, and northern California, and use this model to separate earthquakes occurring above and below the slab surface. The model is based on depth contours previously published by Fluck and others (1997). Our model attempts to rectify a number of...

McCrory, Patricia A.; Blair, J. Luke; Oppenheimer, David H.; Walter, Stephen R.
Depth to the Juan De Fuca slab beneath the Cascadia subduction margin - a 3-D model for sorting earthquakes; 2004; DS; 91; McCrory, Patricia A.; Blair, J. Luke; Oppenheimer, David H.; Walter, Stephen R.

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Year Published: 2003

New studies initiated by the U.S. Geological Survey - Effects of nutrient enrichment on stream ecosystems

In 2001, the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program began an intensive study of nutrient enrichment elevated concentrations of nitrogen and phosphorus in streams in five agricultural basins across the Nation (see map, p. 2). This study is providing nationally consistent and comparable data and analyses of...

Munn, Mark D.; Hamilton, Pixie A.
New Studies Initiated by the U.S. Geological Survey?Effects of Nutrient Enrichment on Stream Ecosystems; 2003; FS; 118-03; Munn, Mark D.; Hamilton, Pixie A.

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Year Published: 2003

Effects of Urban Development on Floods

Konrad, Christopher P.
Effects of Urban Development on Floods; 2003; FS; 076-03; Konrad, Christopher P.

Filter Total Items: 858
August 30, 2013

L1 East Transect – 2013

Permanent Site: L1 East Transect; Depth: 10.3 Meters (33.9 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13957527,-123.59359993; Site Description: This transect is medium depth. Substrate is now mainly fine sediment/sand/mud covered in a layer of brown diatoms (0:09 seconds). Scattered

...
August 30, 2013

L1 West Transect – 2013

Permanent Site: L1 West Transect; Depth: 11.2 Meters (36.9 Feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13957527,-123.59427175; Site Description: This transect is medium depth. The first 20 meters contains scattered boulders (0:08 seconds). Where there are no boulders, substrate is now

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August 28, 2013

H2 East Transect – 2013

Permanent Site: H2 East Transect; Depth: 8.0 Meters (26.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15008216,-123.53210661; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

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August 28, 2013

H2 West Transect – 2013

Permanent Site: H2 West Transect; Depth: 7.4 Meters (24.3 Feet); Distance from river mouth: 2.6 Kilometers (1.6 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.15008216,-123.53277857; Site Description: This site is medium to shallow depth. Substrate is mainly gravel with some sand, cobble and an occasional boulder and has not changed since dam

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August 27, 2013

GP1 East Transect – 2013

Permanent Control Site: GP1 East Transect; Depth: 7.2 Meters (23.5 Feet); Distance from river mouth: 19.0 Kilometers (11.8 Miles) east; Pre/Post Dam Removal: 2 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

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August 27, 2013

GP2 East Transect – 2013

Permanent Control Site: GP2 East Transect; Depth: 13.0 Meters (42.8 Feet); Distance from river mouth: 18.8 Kilometers (11.7 Miles) east; Pre/Post Dam Removal: 2 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

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August 26, 2013

D2 West Transect – 2013

Permanent Site: D2 West Transect; Depth: 11.9 Meters (39.0 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 2 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 sand and cobble. Woody debris is seen (2:13 seconds). No live

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August 26, 2013

A2 West Transect – 2013

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: 2 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 scattered boulders. Seaweeds continue to be scarce and mainly

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August 26, 2013

D2 East Transect – 2013

Permanent Site: D2 East Transect; Depth: 11.8 Meters (38.7 Feet); Distance from river mouth: 0.3 Kilometers (0.2 Miles); Pre/Post Dam Removal: 2 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 with some sand and cobble. No live seaweeds are present. Only the dead stalks

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August 16, 2013

J1 West Transect – 2013

Permanent Site: J1 West Transect; Depth: 9.3 Meters (30.5 Feet); Distance from river mouth: 6.6 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 2 years post-dam removal; Lat/Long: 48.13607725,-123.48002186; Site Description: This site is medium depth. Substrates has remained mainly a gravel/sand mixture. Seaweed density is still greatly decreased. Five species of brown

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August 16, 2013

H1 East Transect – 2013

Permanent Site: H1 East Transect; Depth: 5.4 Meters (Feet 17.8); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 2 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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August 16, 2013

H1 West Transect – 2013

Permanent Site: H1 West Transect; Depth: 5.9 Meters (Feet 19.2); Distance from river mouth: 2.4 Kilometers (1.5 Miles) east; Pre/Post Dam Removal: 2 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

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Filter Total Items: 351
USGS
December 3, 2002

Two reports published in a leading science journal cast doubt on the importance of ultraviolet-b radiation (UV-B) as a factor driving amphibian population declines.

USGS science for a changing world logo
November 21, 2002

Recent studies show that thinning of young forests can benefit the development of old-growth characteristics and the diversity of plants and animals, but only if methods are used that protect and promote the development of shrubs, hardwoods, and large or old trees.

USGS
November 21, 2002

Recent studies show that thinning of young forests can benefit the development of old-growth characteristics and the diversity of plants and animals, but only if methods are used that protect and promote the development of shrubs, hardwoods, and large or old trees.

USGS
January 25, 2002

In an effort to understand how future earthquakes will affect the central Puget Sound lowlands, U. S. Geological Survey scientists, working from North Seattle Community College, on January 25 will begin installing 90 seismographs to measure ground shaking throughout the region.

USGS science for a changing world logo
December 4, 2001

The U.S. Geological Survey’s Earth Science Information Center (ESIC), commonly known as the map sales office, located in the U.S. Post Office Building at 904 West Riverside Ave., in Spokane, Wash., will officially close on Friday, December 28, 2001.

USGS
December 4, 2001

The U.S. Geological Survey’s Earth Science Information Center (ESIC), commonly known as the map sales office, located in the U.S. Post Office Building at 904 West Riverside Ave., in Spokane, Wash., will officially close on Friday, December 28, 2001.

USGS
September 20, 2001

Anne Kinsinger, a biologist and administrator with the U.S. Geological Survey for the past nine years, is now serving as "regional biologist" for that Department of the Interior agency. Her office is located in the USGS Western Region office in the Federal Building at 909 First Avenue, in Seattle.

USGS science for a changing world logo
May 15, 2001

Ground breaking for a new home for the U.S. Geological Survey’s David A. Johnston Cascades Volcano Observatory (CVO) will take place at 9 a.m., May 18, 2001, exactly 21 years after the climactic 1980 Mount St. Helens eruption that took the life of USGS geologist Dave Johnston. The new building will be located at 1300 SE Cardinal Court, in the Columbia Tech Center, in Vancouver, Wash.

USGS
May 15, 2001

Ground breaking for a new home for the U.S. Geological Survey’s David A. Johnston Cascades Volcano Observatory (CVO) will take place at 9 a.m., May 18, 2001, exactly 21 years after the climactic 1980 Mount St. Helens eruption that took the life of USGS geologist Dave Johnston.

USGS science for a changing world logo
April 18, 2001

In early February the program for this year’s annual meeting of the Seismological Society of America was finalized, with several papers and posters that addressed the potential for large earthquakes in the Puget Sound area of Washington.

USGS science for a changing world logo
April 18, 2001

The most common information available immediately following an earthquake is the location and magnitude. However, what scientists really want to know is where the shaking was felt, and in the case of emergency response, where it shook the most. Two new systems can now answer these questions within minutes following an earthquake. Both are available on the Internet.

USGS
April 18, 2001

In early February the program for this year’s annual meeting of the Seismological Society of America was finalized, with several papers and posters that addressed the potential for large earthquakes in the Puget Sound area of Washington.