Images

USGS hydrologic technician makes an ADCP measurement by walking across streambed on the Bear River below Alexander Reservoir, Idaho.

USGS hydrologist Mark Reid looks at one of the many grabens (extensional basins) that formed as the Oso landslide swept across the North Fork Stillaguamish River valley.

A hydrologic technician from the USGS Idaho Water Science Center measures streamflow in Fall Creek near Anderson Ranch Dam in southwestern Idaho. The USGS is collecting data at hundreds of sites on rivers and streams in six western states to document the 2015 drought.

Juvenile wolf eel - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Moon snails - Scuba divers from the U.S. Geological Survey’s Western Fisheries Research Center, Washington Sea Grant, EPA and the Lower Elwha Klallam Tribe collected data and images from a long-term study of the Elwha River dam removals and the resulting effects on the nearshore ecosystem.

Scenic view from Siuslaw National Forest, OR.

A USGS researcher takes algae samples at Bear Creek in Redmond, Washington.

Salmonids are inventoried during the ecosurveys done for the Regional Stream Quality Assessment (RSQA)

USGS scientist completing a stream assessement of West Fork Palmer Creek, Oregon.

Photograph of field gear and equipment used in water quality monitoring.

Snags provide habitat for a wide range of organisms from cavity-nesting birds to insects, and are critical for maintaining forest biodiversity. Resource managers can create snags by topping trees to mitigate loss of snags to timber harvest, but information regarding changes in habitat for snag-dependent wildlife over time as created snags decay is lacking.

USGS hydrologist working in the field.

Land Remote Sensing Image of Mount St. Helens on May 22, 1983. The volcanic blast on May 18, 1980, devastated more than 150 square miles of forest within a few minutes. In this Landsat false-color images, forest appears as bright red interspersed with patches of logging. Snow appears white, and ash is gray.

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.

Researcher processing a Lost River sucker at Sucker Springs on Upper Klamath Lake.

Fish biologist with a female Lost River sucker from Sucker Springs on Upper Klamath Lake.

The Columbia River flows by the highway on its way to the Pacific Ocean.

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.