Images

A hydrologist collects a suspended sediment sample using a continuous flow centrifuge.

Visitors at Glines Canyon East Abutment in Olympic National Park, the location of the Elwha River Restoration project. Image available at Olympic National Park flickr site.

Different size and age classes of experimental Specific-Pathogen-Free Pacific herring reared at the Marrowstone Marine Field Station.

Nucleospora (Enterocytozoon) salmonis infected fingerling steelhead kidney imprint. Note parasitized lymphoblasts containing spherical, light colored, nondescript, nuclear inclusions (arrows). L-G stain. X1000. (Courtesy of B. MacConnell)

USGS researcher Jeff Wynn monitors in-coming data at the CSAMT (Controlled-Source Audio-Magnetotellurics ) receiver site on Mount St. Helens. The data will be used to locate the top of the groundwater system beneath the site.

Aerial photograph of the mouth of the Elwha River showing sediment deposits from dam removal. Aerial assistance by LightHawk and plane piloted by Dr. Milton Bennett.

Aerial photograph of the Elwha River flowing through the remains of the Glines Canyon Dam during the 3rd year of the dam removal project. Aerial assistance by LightHawk and plane piloted by Dr. Milton Bennett.

The new volcanic-gas monitoring station installed at Mount St. Helens consists of weather monitoring equipment and sensors for measuring the concentrations of water vapor (H2O), carbon dioxide (CO2), sulfur dioxide (SO2), and hydrogen sulfide (H2S) in volcanic gas plumes.

Connie McKibben and Carla Conway (USGS) taking kidney samples from adult female Chinook salmon for detection and quantification of Renibacterium salmoninarum (Rs) in the fish, while Joy Evered observes.  Dr. Evered is a USFWS Veterinary Medical Officer and the USFWS Project Officer for this research project.

Dr. Wendy Olson, USFWS biologist (orange rain pants) records data for female spring Chinook salmon being spawned at the hatchery. Among the data recorded are fin clips designating treatment groups for the research project (erythromycin treatment, tulathromycin treatment, or no treatment).

The confluence of the Suiattle River (muddy river) into the Sauk River. 

Northern spotted owls (Strix occidentalis caurina) are mostly non-migratory, long-lived birds whose populations have declined in mature forests of western North America.

Northern spotted owls (Strix occidentalis caurina) are mostly non-migratory, long-lived birds whose populations have declined in mature forests of western North America.

Spotted Owl flying

Close-up image of Nisqually Delta eelgrass.

A volcano monitoring “spider” was deployed by helicopter to the Oso landslide to track ground movement and seismicity while search-and-rescue operations were ongoing.  The spider was equipped with a seismometer (mounted on the far left leg) to track ground shaking and GPS (a dome-shaped instrument on the upper mast) to track subtle ground movement.

Between 2009 and 2018, scientists conducted a national scale assessment of mercury accumulation in the National Park System using dragonfly larvae as biosentinels (species that accumulate a pollutant in their tissues as an index of exposure to other organisms without significant adverse effects to the biosentinel) through a citizen science network called the Dragonf

Oso Landslide

Graduate student Daniel Hernandez, from the University of Washington School of Aquatic and Fishery Sciences, measures virus for a Chinook salmon infection experiment in the WFRC wet lab.  Doug McKenney, USGS volunteer is assisting.

Graduate student Daniel Hernandez, measures virus for a Chinook salmon infection experiment in the WFRC wetlab.