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The Oregon hydrologic technicians are servicing equipment that is part of a streamflow and water-quality monitoring inituative. Our data and study results are widely used to manage Oregon's water resources for the benefit of people and our environment.

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News

This Month at WFRC Thumb
October 15, 2018

This page contains WFRC "Highlights" for the month of October, 2018

Coho salmon
September 14, 2018

USGS researchers are assessing habitat condition, watershed processes, and coho salmon populations in the context of land management and restoration activities.

close up of an Oregon spotted frog's head from above
September 14, 2018

The Oregon spotted frog (OSF) is listed as federally threatened and predation by non-native species is thought to be one of the main conservation threats to this species.

Filter Total Items: 67
Map of study area
Date Published: September 27, 2018
Status: Completed

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

The ecological and economic costs of an invasive quagga or zebra mussel infestation in the Pacific Northwest of the U.S. would be significant. The development of invasive mussel monitoring programs in the Pacific Northwest provides a unique opportunity to evaluate a regional invasive species detection effort early in its development. Although efforts are underway to monitor for the presence of...

Contacts: Timothy Counihan, Stephen M. Bollens
Organizational Chart
Date Published: August 29, 2018
Status: Active

WFRC Organizational Chart

Organizational structure of the Western Fisheries Research Center

Trout
Date Published: August 28, 2018
Status: Active

Species Studied by the Western Fisheries Research Center

Many species are studied at the Western Fisheries Research Center.  These species include bacteria, birds, fish, invertebrates, parasites, plants, and viruses. The list contains both common and scientific names, and where each are being studied on the WFRC landscape.

Juvenile Chinook salmon
Date Published: August 1, 2018
Status: Active

Scientific Support of Salmon and Steelhead Reintroductions in Impounded River Basins of the Pacific Northwest

Salmon and steelhead populations in the Pacific Northwest were severely affected by hydropower development that occurred during the first half of the 20th century.  Impassable dams were constructed on many rivers throughout the region which prevented returning adult salmonids from accessing important habitats where spawning and rearing historically occurred.  In the past two decades...

Contacts: Tobias J Kock
Sampling water in Klamath Lake
Date Published: July 31, 2018
Status: Active

Directions - Klamath Falls Field Station

Directions from the Rogue Valley International Medford Airport

Processing a Lost River Sucker
Date Published: July 31, 2018
Status: Active

Staff Directory - Klamath Falls Field Station

Staff at the Klamath Falls Field Station, Klamath Falls, OR

Researchers scan for sucker PIT tags
Date Published: July 31, 2018
Status: Active

Partnerships - Klamath Falls Field Station

For more than five decades the WFRC has worked with partners to provide research findings to managers of aquatic resources.

Klamath Tribe Research Hatchery
Date Published: July 31, 2018
Status: Active

Tribal Relations - Klamath Falls Field Station

Understanding factors limiting the recruitment of endangered Lost River suckers into the adult spawning populations.

Cyanobacteria bloom
Date Published: July 31, 2018
Status: Active

Upper Klamath Lake Water Quality - Klamath Falls Field Station

Impaired water quality conditions in Upper Klamath Lake have been implicated in reduced survival of fishes and are a concern for recovery efforts.

Adult shortnose sucker
Date Published: July 31, 2018
Status: Active

Shortnose Sucker (Chasmistes brevirostris) - KFFS

Species Studied

Shortnose Sucker (Chasmistes brevirostris)

Adult steelhead
Date Published: July 31, 2018
Status: Active

Steelhead (Oncorhynchus mykiss) - KFFS

Species Studied

Steelhead (Oncorhynchus mykiss)

Adult Lost River sucker
Date Published: July 31, 2018
Status: Active

Lost River Sucker (Deltistes luxatus) - KFFS

Species Studied

Lost River Sucker (Deltistes luxatus)

Filter Total Items: 34
Web Application
/data-tools/land-treatment-exploration-tool

Land Treatment Exploration Tool

Screenshot of the Land Treatment Exploration Tool with proposed treatment drawn on screen.
May 3, 2018

The Land Treatment Exploration Tool is designed for resource managers to use when planning land treatments. The tool provides useful summaries of environmental characteristics of planned treatment areas and facilitates adaptive management practices by comparing those characteristics to other similar treatments within a specified distance or area of interest.  Provisional Software.

APIs
/data-tools/coastal-and-marine-geology-program-internet-map-server-and-gis-data

Coastal and Marine Geology Program Internet Map Server and GIS Data

Map of Submerged Lands
April 4, 2018

The USGS Coastal and Marine Geology Program (CMGP) Internet Map Server is an interactive mapping service which allows the user to explore and download GIS data sets published by CMGP.

GIS Data
/data-tools/streamflow-observation-points-pacific-northwest-1977-2016

Streamflow Observation Points in the Pacific Northwest, 1977-2016

Stream observation points and focal basins for PROSPER project
December 22, 2017

This dataset includes spatial locations in the Pacific Northwest where streamflow observations were recorded. For the purpose of this investigation, all streamflow observations were converted into wet or dry indicator values.

Science Datasets
/data-tools/prospect-and-mine-related-features-us-geological-survey-75-and-15-minute-topographic

Prospect- and Mine-Related Features from U.S. Geological Survey 7.5- and 15-Minute Topographic Quadrangle Maps of the United States

data location map
December 1, 2017

These data are part of a larger USGS project to develop an updated geospatial database of mines, mineral deposits and mineral regions in the United States. Mine and prospect-related symbols, such as those used to represent prospect pits, mines, adits, dumps, tailings, etc., are currently being digitized on a state-by-state basis from USGS Historical Topographic Maps.

Science Datasets
/data-tools/oregon-spotted-frog-rana-pretiosa-monitoring-jack-creek-2015-2016

Oregon Spotted Frog (Rana pretiosa) Monitoring at Jack Creek 2015-2016

Oregon spotted frog partially submerged
September 21, 2017

This dataset contains information from mark-recapture and egg mass surveys conducted by USGS as part of an ongoing Oregon spotted frog (Rana pretiosa) monitoring effort at Jack Creek, Klamath County, Oregon. Data consist of spotted frog counts aggregated by date, location, life stage, and sex, as well as data on environmental conditions at the time each survey.

Science Datasets
/data-tools/created-snag-characteristics-and-cavity-nesting-bird-associations-cfirp-stands-mcdonald

Created snag characteristics and cavity-nesting bird associations in the CFIRP stands, McDonald-Dunn Research Forest, Corvallis, OR, USA, 2016

USGS science for a changing world
September 18, 2017

We measured characteristics of 731 snags and quantified foraging and breeding use of snags by birds 25-27 years after their creation, and examined whether different harvest treatments (i.e., group selection, two-story, clearcut) and snag configurations (i.e., scattered and clustered) influenced snag characteristics or avian use for foraging and nesting.

Water
/data-tools/national-water-information-system-web-interface-nwisweb-0

National Water Information System web interface (NWISweb)

Application screenshot thumbnail
September 1, 2017

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

Science Datasets
/data-tools/count-and-detection-nondetection-survey-data-barred-owls-strix-varia-historical-breeding

Count and detection-nondetection survey data of Barred Owls (Strix varia) in historical breeding territories of Northern Spotted Owls (Strix occidentalis caurina) in the Oregon Coast Ranges, 1995-2016

USGS science for a changing world
August 31, 2017

This dataset contains count and detection-nondetection data of Barred Owls from 106 historical breeding territories of Northern Spotted Owl territories (i.e. sites) in the Oregon Coast Ranges from 1995 to 2016. 

Web Application
/data-tools/national-water-information-system-nwis-mapper

National Water Information System (NWIS) Mapper

NWIS Mapper screenshot
August 30, 2017

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

APIs
/data-tools/wapato-lake-interactive-lake-level-tool

Wapato Lake Interactive Lake Level Tool

USGS: Science for a changing world
August 29, 2017

The water level of Wapato Lake dictates the size (surface area) of the lake and the amount of water that it stores. This web page allows the user to interactively explore Wapato Lake water level data and how the water level translates into lake area and volume.

Science Datasets
/data-tools/data-release-usgs-field-activity-2014-607-fa-oregon-ocs-seafloor-mapping-selected-lease

Data Release for USGS Field Activity 2014-607-FA--Oregon OCS Seafloor Mapping: Selected Lease Blocks Relevant to Renewable Energy

Illustration of bathymetry hillshade offshore of Oregon shows the contours of the seafloor in shades of gray.
July 25, 2017

Data collected during 12-hour day operations in 2014, out of Charleston Harbor near Coos Bay, Oregon. The cruise plan consisted of 23 days on site split between sonar mapping and video ground truth surveying.

Science Datasets
/data-tools/avian-abundance-and-oak-mistletoe-survey-data-willamette-valley-oregon-2013-2015

Avian abundance and oak mistletoe survey data from the Willamette Valley, Oregon, 2013-2015

USGS science for a changing world
July 19, 2017

This dataset includes two spreadsheets: The "Avian_abundance_oak_mistletoe_bird_data" spreadsheet contains data regarding Oregon White Oak tree (Quercus garryana) measurements. The "Avian_abundance_oak_mistletoe_surveys_data" spreadsheet contains bird survey observations.

Filter Total Items: 3
CITE
January 10, 2018

Scientists at WERC's Dixon Field station have fitted Cinnamon Teal with GPS backpacks. Using R, the telemetry locations are displayed on an image every two weeks.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Klamath lake landsat
February 1, 2010

The image is a mosaic of nine scenes from Landsat 5 at a resolution of 30 meters on 07/22/2005, 08/26/2006, 06/17/2007, 07/05/2007, 08/18/2009, 08/27/2009, and 09/26/2009.

Filter Total Items: 91
Year Published: 2018

Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2017

Executive SummaryData from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive...

Hewitt, David A.; Janney, Eric C.; Hayes, Brian S.; Harris, Alta C.
Hewitt, D.A., Janney, E.C., Hayes, B.S., and Harris, A.C., 2018, Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2017: U.S. Geological Survey Open-File Report 2018-1064, 31 p., https://doi.org/10.3133/ofr20181064.

Year Published: 2018

Juvenile Lost River and shortnose sucker year class strength, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2016 Monitoring Report

Executive SummaryThe largest populations of federally endangered Lost River (Deltistes luxatus) and shortnose suckers (Chasmistes brevirostris) exist in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California. Upper Klamath Lake populations are decreasing because adult mortality, which is relatively low, is not being balanced by...

Burdick, Summer M.; Ostberg, Carl O.; Hoy, Marshal S.
Burdick, S.M., Ostberg, C.O., and Hoy, M.S., 2018, Juvenile Lost River and shortnose sucker year class strength, survival, and growth in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California—2016 Monitoring Report: U.S. Geological Survey Open-File Report 2018–1066, 43 p., https://doi.org/10.3133/ofr20181066.

Year Published: 2018

An epidemiological model of virus transmission in salmonid fishes of the Columbia River Basin

We have developed a dynamic epidemiological model informed by records of viral presence and genotypes to evaluate potential transmission routes maintaining a viral pathogen in economically and culturally important anadromous fish populations. In the Columbia River Basin, infectious hematopoietic necrosis virus (IHNV) causes severe disease,...

Ferguson, Paige F. B.; Breyta, Rachel; Brito, Ilana L.; Kurath, Gael; LaDeau, Shannon L.
Ferguson, P.F.B., R. Breyta, I. Brito, G. Kurath, and S.L. LaDeau. 2018. An epidemiological model of virus transmission in salmonid fishes of the Columbia River Basin. Ecol. Model. 377: 1-15.

Year Published: 2017

P- and S-wave velocity models incorporating the Cascadia subduction zone for 3D earthquake ground motion simulations—Update for Open-File Report 2007–1348

In support of earthquake hazards studies and ground motion simulations in the Pacific Northwest, threedimensional (3D) P- and S-wave velocity (VP and VS , respectively) models incorporating the Cascadia subduction zone were previously developed for the region encompassed from about 40.2°N. to 50°N. latitude, and from about 122°W. to 129°W....

Stephenson, William J.; Reitman, Nadine G.; Angster, Stephen J.
Stephenson, W.J., Reitman, N.G., and Angster, S.J., 2017, P- and S-wave velocity models incorporating the Cascadia subduction zone for 3D earthquake ground motion simulations, version 1.6—Update for Open-File Report 2007–1348: U.S. Geological Survey Open-File Report 2017–1152, 17 p., https://doi.org/10.3133/ofr20171152. [Supersedes USGS Open-File Report 2007–1348.]

Year Published: 2017

Acoustic tag detections of green sturgeon in the Columbia River and Coos Bay estuaries, Washington and Oregon, 2010–11

The Columbia River, in Washington and Oregon, and Coos Bay, in Oregon, are economically important shipping channels that are inhabited by several fishes protected under the Endangered Species Act (ESA). Maintenance of shipping channels involves dredge operations to maintain sufficient in-channel depths to allow large ships to navigate the...

Hansel, Hal C.; Romine, Jason G.; Perry, Russell W.
Hansel, H.C., Romine, J.G., and Perry, R.W., 2017, Acoustic tag detections of green sturgeon in the Columbia River and Coos Bay estuaries, Washington and Oregon, 2010–11: U.S. Geological Survey Open-File Report 2017-1144, 30 p., https://doi.org/10.3133/ofr20171144.

Year Published: 2017

Results of hydrologic monitoring of a landslide-prone hillslope in Portland’s West Hills, Oregon, 2006–2017

The West Hills of Portland, in the southern Tualatin Mountains, trend northwest along the west side of Portland, Oregon. These silt-mantled mountains receive significant wet-season precipitation and are prone to sliding during wet conditions, occasionally resulting in property damage or casualties. In an effort to develop a baseline for...

Smith, Joel B.; Godt, Jonathan W.; Baum, Rex L.; Coe, Jeffrey A.; Ellis, William L.; Jones, Eric S.; Burns, Scott F.
Smith, J.B., Godt, J.W., Baum, R.L., Coe, J.A., Ellis, W.L., Jones, E.S., and Burns, S.F., 2017, Results of hydrologic monitoring of a landslide-prone hillslope in Portland’s West Hills, Oregon, 2006–2017: U.S. Geological Survey Data Series 1050, 10 p., https://doi.org/10.3133/ds1050.

Year Published: 2017

Synthesis of downstream fish passage information at projects owned by the U.S. Army Corps of Engineers in the Willamette River Basin, Oregon

The U.S. Army Corps of Engineers (USACE) operates the Willamette Valley Project (Project) in northwestern Oregon, which includes a series of dams, reservoirs, revetments, and fish hatcheries. Project dams were constructed during the 1950s and 1960s on rivers that supported populations of spring Chinook salmon (Oncorhynchus tshawytscha), winter...

Hansen, Amy C.; Kock, Tobias J.; Hansen, Gabriel S.
Hansen, A.C., Kock, T.J., and Hansen, G.S., 2017, Synthesis of downstream fish passage information at projects owned by the U.S. Army Corps of Engineers in the Willamette River Basin, Oregon: U.S. Geological Survey Open File Report 2017-1101, 118 p., https://doi.org/10.3133/ofr20171101.

Year Published: 2017

Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2015

Executive SummaryData from a long-term capture-recapture program were used to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive...

Hewitt, David A.; Janney, Eric C.; Hayes, Brian S.; Harris, Alta C.
Hewitt, D.A., Janney, E.C., Hayes, B.S., and Harris, A.C., 2017, Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2015: U.S. Geological Survey Open-File Report 2017–1059, 38 p., https://doi.org/10.3133/ofr20171059.

Year Published: 2017

Microfossil measures of rapid sea-level rise: Timing of response of two microfossil groups to a sudden tidal-flooding experiment in Cascadia

Comparisons of pre-earthquake and post-earthquake microfossils in tidal sequences are accurate means to measure coastal subsidence during past subduction earthquakes, but the amount of subsidence is uncertain, because the response times of fossil taxa to coseismic relative sea-level (RSL) rise are unknown. We measured the response of diatoms and...

Horton, B.P.; Milker, Yvonne; Dura, T.; Wang, Kelin; Bridgeland, W.T.; Brophy, Laura S.; Ewald, M.; Khan, Nicole; Engelhart, S.E.; Nelson, Alan R.; Witter, Robert C.
B.P. Horton, Y. Milker, T. Dura, K. Wang, W.T. Bridgeland, L. Brophy, M. Ewald, N.S. Khan, S.E. Engelhart8, A.R. Nelson, and R.C. Witter Y. Milker; T. Dura; K. Wang; W.T. Bridgeland; L. Brophy; M. Ewald; N.S. Khan; S.E. Engelhart; A.R. Nelson; R.C. Witter

Year Published: 2017

Trophic interactions and consumption rates of subyearling Chinook Salmon and nonnative juvenile American Shad in Columbia River reservoirs

We used a large lampara seine coupled with nonlethal gastric lavage to examine the diets and estimate consumption rates of subyearling Chinook Salmon Oncorhynchus tshawytscha during July and August 2013. During August we also examined the diet and consumption rates of juvenile American Shad Alosa sapidissima, a potential competitor of subyearling...

Haskell, Craig A.; Beauchamp, David A.; Bollins, Stephen M
Haskell, C.A., D.A. Beauchamp, and S.M. Bollens. 2017. Trophic interactions and consumption rates of subyearling Chinook Salmon and nonnative juvenile American Shad in Columbia River reservoirs. Trans. Am. Fish. Soc. 146(2): 291-298.

Year Published: 2017

Infectious hematopoietic necrosis virus virological and genetic surveillance 2000–2012

Surveillance records of the acute RNA pathogen of Pacific salmonid fish infectious hematopoietic necrosis virus are combined for the first time to enable landscape-level ecological analyses and modeling. The study area is the freshwater ecosystems of the large Columbia River watershed in the U.S. states of Washington, Oregon, and Idaho, as well as...

Breyta, Rachel; Brito, Ilana L.; Kurath, Gael; LaDeau, Shannon L.

Year Published: 2016

Development of a study design and implementation plan to estimate juvenile salmon survival in Lookout Point Reservoir and other reservoirs of the Willamette Project, western Oregon

Survival estimates for juvenile salmon and steelhead fry in reservoirs impounded by high head dams are coveted data by resource managers.  However, this information is difficult to obtain because these fish are too small for tagging using conventional methods such as passive-integrated transponders or radio or acoustic transmitters.  We...

Kock, Tobias J.; Perry, Russell W.; Monzyk, Fred R.; Pope, Adam C.; Plumb, John M.
Kock, T.J., Perry, R.W., Monzyk, F.R., Pope, A.C., and Plumb, J.M., 2016, Development of a study design and implementation plan to estimate juvenile salmon survival in Lookout Point Reservoir and other reservoirs of the Willamette Project, western Oregon: U.S. Geological Survey Open-File Report 2016–1211, 25 p., https://doi.org/10.3133/ofr20161211.

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multicolored map of Ocean Shores, Washington
April 13, 2017

The Pedestrian Evacuation Analyst is an ArcGIS extension that estimates how long it would take for someone to travel on foot out of a hazardous area that was threatened by a sudden event such as a tsunami, flash flood, or volcanic lahar. It takes into account the elevation changes and the different types of landcover that a person would encounter along the way.

Upper Klamath Lake
April 3, 2013

The Shoreline Management Tool—An ArcMap Tool for Analyzing Water Depth, Inundated Area, Volume, and Selected Habitats, with an Example for the Lower Wood River Valley, Oregon

Filter Total Items: 113
Image from an application that navigates users through USGS National Oil and Gas Assessment Provinces
November 14, 2018

National Oil and Gas Assessment Provinces

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

Map of study area
September 27, 2018

Map of study area that includes the states of ID, MT, OR, WA

Map of the study area that includes the states of Idaho, Montana, Oregon, and Washington. The Columbia and Snake rivers are the two largest rivers in the Columbia River Basin which is shown as a shaded area on the map.

September 21, 2018

Northwest ShakeAlert Sensor Station

Maintenance of a high-quality ShakeAlert sensors, power and telemetry stations.

September 11, 2018

B-Roll California ShakeAlert Sensor

Maintenance of high quality ShakeAlert sensor, power and telemetry station.
 

View from the top deck of a ship on water, looking down on the bow with three people standing, with a bridge in the background.
August 10, 2018

Heading back to port, Newport Harbor

Entering Yaquina Bay, Oregon aboard the NOAA ship Rainier, approaching the Yaquina Bay Bridge with Newport Marina off to the right in the distance.

Photo of scientists operating small drone in the field
August 9, 2018

Using drones to study groundwater

Did you know that plants can help us understand what is happening underground? Studying plants in an area can sometimes provide information about soil conditions, water availability, and water quality. In this photo, USGS Oregon Water Science Center hydrologists Brandon Overstreet and Gabe Gordon are using a small

...
Attribution: Water Resources
Photo of scientist operating small drone in the field
August 8, 2018

Using drones to study groundwater

Did you know that plants can sometimes help us understand what is happening underground? Studying plants in an area can provide information about soil conditions, water availability, and water quality. In this photo, USGS Oregon Water Science Center hydrologist Brandon Overstreet is using a small unoccupied aircraft

...
Attribution: Water Resources
Map highlighting sampling locations of 339 Northern Spotted Owls used in Miller, et al, 2018
August 2, 2018

Figure 1 from Miller, et al, 2018

Map highlighting sampling locations of 339 Northern Spotted Owls used in Miller, et al, 2018

Comparison maps indicating short or long times available for earthquake shaking arrival times
March 31, 2018

Earthquake Alerts: Early and Often? Or Possibly Late?

The choice when issuing earthquake warnings is to: 1) issue alerts for weak shaking and potentially provide long warning times, but risk sending alerts for the many events that do not go on to produce damaging ground shaking, or 2) issue alerts only when ground shaking is expected to be damaging, with the tradeoff that the alert will be sent much later, reducing the

...
Steller's Jay with deformed beak at a bird feeder
March 14, 2018

Steller's Jay with deformed beak at a bird feeder

A Steller's Jay with a deformed beak at a bird feeder. This photo was from an observation report of the Alaska Science Center's Beak Deformity project.

Mean annual streamflow permanence probability
February 7, 2018

Mean annual streamflow permanence probability

Mean Annual Streamflow Permanence Probability

Variability associated with streamflow permanence predictions
February 7, 2018

Variability associated with streamflow permanence predictions

Variability associated with streamflow permanence predictions

Filter Total Items: 184
This Month at WFRC Thumb
October 15, 2018

This page contains WFRC "Highlights" for the month of October, 2018

Coho salmon
September 14, 2018

USGS researchers are assessing habitat condition, watershed processes, and coho salmon populations in the context of land management and restoration activities.

close up of an Oregon spotted frog's head from above
September 14, 2018

The Oregon spotted frog (OSF) is listed as federally threatened and predation by non-native species is thought to be one of the main conservation threats to this species.

View from the top deck of a ship on water, looking down on the bow with three people standing, with a bridge in the background.
September 7, 2018

From July 31 to August 23, a joint USGS-NOAA cruise mapped seafloor depths, texture, and gas seeps in the Cascadia subduction zone offshore of Washington, Oregon, and northern California.

Columbia spotted frog
August 10, 2018

Landscape genetics illustrate how landscape features influence species connectivity and can provide insights for species conservation efforts;however, factors that influence connectivity vary considerably, even among species occupying similar landscapes.

Map highlighting sampling locations of 339 Northern Spotted Owls used in Miller, et al, 2018
August 2, 2018

Federal researchers used landscape genetics to evaluate the role that forest connectivity plays in determining genetic connectivity for the federally-threatened northern spotted owl.

Elk
July 27, 2018

Land management practices often directly alter vegetation structure and composition, but the degree to which ecological processes such as herbivory are affected is poorly understood. 

Aerial photographs with study area delineations
July 20, 2018

Assessments of restoration effectiveness in riparian areas depend on quality monitoring data, which can be both expensive and difficult to collect. 

An animated GIF of an owl on a tree with a bobbing head going around in a circle.
July 9, 2018

In a study led by the USGS, researchers developed a framework to infer inbreeding rates of Northern Spotted Owls when incomplete parentage information exists.

color photograph
April 26, 2018

Scientists at EROS use remote sensing data to assist in the understanding of water dynamics in Upper Klamath 

Managed Oregon forest landscape
February 12, 2018

Timber harvest is a significant driver of mercury releases in some parts of the world.

Issue5.10October2017Thumb
November 21, 2017

Scientists Continue to Gain Insights into Endangered Suckers in the Klamath Basin

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