Images

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

Fish health principle investigators, students, post-docs, and technicians from different research groups work together as a fish processing team on days when large numbers of fish require sampling.  They are collecting multiple tissues from each fish for testing virus infection and host immune response.

Re-vegetation in the river valley at the Elwha River restoration site. Image available at Olympic National Park flickr site.

A U.S. Geological Survey hydrologist holds a centrifuge bowl containing river suspended sediment for analysis of metals and organic chemicals. The sample was collected using a new in-field continuous-flow centrifugation technique to separate and collect suspended sediment from large volumes of water.

Flyer for the Mount St. Helens Teacher Workshop. Held June 25-27, 2014, it was a workshop for middle school teachers.

USGS Hydrologist Chris Magirl captures image of the Elwha River flooding for the first time following dam removal. This location is just downstream of the former Elwha Dam which used to stand at the area near the top of the photograph.

Scientist collection samples on South Cascade Glacier, northwestern Washington State. South Cascade Glacier located in a north-northwest facing valley near the crest of the Cascade Range in northwest Washington state. In 1959 scientists with the USGS began collecting mass balance data on South Cascade Glacier, now one of five "benchmark glaciers" in the US.

USGS-CVO Research Geologist Peter Kelly communicates with the helicopter pilot and prepares for pick-up, on the new dome within the crater of Mount St. Helens.

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. 

Spotted Owl flying

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